CN106129551B - Capacitor loading type notch ring C-type filter - Google Patents
Capacitor loading type notch ring C-type filter Download PDFInfo
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- CN106129551B CN106129551B CN201610762431.0A CN201610762431A CN106129551B CN 106129551 B CN106129551 B CN 106129551B CN 201610762431 A CN201610762431 A CN 201610762431A CN 106129551 B CN106129551 B CN 106129551B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
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Abstract
The invention discloses a capacitance loading type C-shaped filter with a notch ring, which belongs to the technical field of filters and comprises an input port P1, an output port P2, a first strip line layer, a second strip line layer, a first capacitance layer, a first metal column H11, a second metal column H12, a third metal column H13, a fourth metal column H14, a fifth metal column H21, a sixth metal column H22, a seventh metal column H23, an eighth metal column H24, a ninth metal column H31, a tenth metal column H32 and an eleventh metal column H33, the novel structure filter has the advantages that the novel structure filter is small in size, light in weight, high in reliability, excellent in electrical property, simple in structure, high in yield, good in batch consistency, low in manufacturing cost and stable in temperature performance, and is achieved by the aid of the twelfth metal column H34, the thirteenth metal column H41, the fourteenth metal column H42, the fifteenth metal column H43, the sixteenth metal column H44, the seventeenth metal column H51 and the eighteenth metal column H52.
Description
Technical Field
The invention belongs to the technical field of filters.
Background
In recent years, with the rapid development of miniaturization of mobile communication, satellite communication and defense electronic systems, high performance, low cost and miniaturization have become the development direction of the microwave/radio frequency field at present, and higher requirements are made on the performance, size, reliability and cost of a microwave filter. In some defense-oriented devices, duplexers have become a key electronic component in the receive and transmit branches of this band, and the main indicators describing the performance of such components are: passband operating frequency range, stopband frequency range, isolation, passband insertion loss, stopband attenuation, passband input/output voltage standing wave ratio, insertion phase shift and delay frequency characteristics, temperature stability, volume, weight, reliability and the like.
The low-temperature co-fired ceramic is an electronic packaging technology, a multilayer ceramic technology is adopted, a passive element can be arranged in a medium substrate, and an active element can be attached to the surface of the substrate to form a passive/active integrated functional module. LTCC technology has shown numerous advantages in terms of cost, integrated packaging, wiring line width and spacing, low impedance metallization, design versatility and flexibility, and high frequency performance, and has become the dominant technology for passive integration. The microwave device has the advantages of high Q value, convenience for embedding a passive device, good heat dissipation, high reliability, high temperature resistance, shock resistance and the like, and by utilizing the LTCC technology, the microwave device which is small in size, high in precision, good in compactness and small in loss can be well processed.
Disclosure of Invention
The invention aims to provide a capacitor loading type notch ring C-type filter, which adopts an LTCC technology to realize a novel structure filter with small volume, light weight, high reliability, excellent electrical property, simple structure, high yield, good batch consistency, low manufacturing cost and stable temperature performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a capacitor loading type notch ring C-type filter comprises an input port P1, an output port P2, a first strip line layer, a second strip line layer, a first capacitor layer, a first metal column H11, a second metal column H12, a third metal column H13, a fourth metal column H14, a fifth metal column H21, a sixth metal column H22, a seventh metal column H23, an eighth metal column H24, a ninth metal column H31, a tenth metal column H32, an eleventh metal column H33, a twelfth metal column H34, a thirteenth metal column H41, a fourteenth metal column H42, a fifteenth metal column H43, a sixteenth metal column H44, a seventeenth metal column H51 and an eighteenth metal column H52, wherein the input port P1 and the output port P2 are arranged at a left-right interval, the first strip line layer and the first capacitor layer are sequentially arranged from top to bottom;
the first stripline layer includes a first stage open annular stripline K1, a second stage open annular stripline K2, a third stage open annular stripline K3, and a fourth stage open annular stripline K4, the opening direction of the first-stage opening annular strip line K1 is rightward, a third-stage opening annular strip line K3 is arranged below the first-stage opening annular strip line K1 at intervals, the opening direction of the third-stage opening annular strip line K3 is leftward, a second-stage split annular strip line K2 is arranged at the right side of the first-stage split annular strip line K1 at intervals, the opening direction of the second-stage split annular strip line K2 is opposite to the opening direction of the first-stage split annular strip line K1, a fourth-stage opening annular strip line K4 is arranged below the second-stage opening annular strip line K2 at intervals, and the opening direction of the fourth-stage opening annular strip line K4 is opposite to that of the third-stage opening annular strip line K3;
the second stripline layer comprises a first Z-shaped stripline T1 and a second Z-shaped stripline T2, one end of the first Z-shaped stripline T1 is connected with the input port P1, the other end of the first Z-shaped stripline T51 is connected with the first-stage open annular stripline K1 through a seventeenth metal pillar H51, one end of the second Z-shaped stripline T2 is connected with the output port P2, and the other end of the second Z-shaped stripline T2 is connected with the second-stage open annular stripline K2 through an eighteenth metal pillar H52;
the first capacitor layer comprises a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C41, a capacitor C42, a capacitor C43 and a capacitor C44, and the first stage open annular stripline K1, the second stage open annular stripline K2, the third stage open annular stripline K3 and the fourth stage open annular stripline K4 are rectangular open annular striplines;
a capacitor C11 is arranged below the corner point of the left rear side of the first-stage opening annular strip line K1, a first metal column H11 is arranged between the corner point of the left rear side of the first-stage opening annular strip line K1 and the capacitor C11, and the corner point of the left rear side of the first-stage opening annular strip line K1 is connected with the capacitor C11 through the first metal column H11;
a capacitor C12 is arranged below the corner point of the right rear side of the first-stage opening annular strip line K1, a second metal column H12 is arranged between the corner point of the right rear side of the first-stage opening annular strip line K1 and the capacitor C12, and the corner point of the right rear side of the first-stage opening annular strip line K1 is connected with the capacitor C12 through the second metal column H12;
a capacitor C13 is arranged below the corner point of the left front side of the first-stage opening annular strip line K1, a third metal column H13 is arranged between the corner point of the left front side of the first-stage opening annular strip line K1 and the capacitor C13, and the corner point of the left front side of the first-stage opening annular strip line K1 is connected with the capacitor C13 through the third metal column H13;
a capacitor C14 is arranged below the corner point of the right front side of the first-stage opening annular strip line K1, a fourth metal column H14 is arranged between the corner point of the right front side of the first-stage opening annular strip line K1 and the capacitor C14, and the corner point of the right front side of the first-stage opening annular strip line K1 is connected with the capacitor C14 through the fourth metal column H14;
a capacitor C21 is arranged below the corner point of the left rear side of the second-stage opening annular strip line K2, a fifth metal column H21 is arranged between the corner point of the left rear side of the second-stage opening annular strip line K2 and the capacitor C21, and the corner point of the left rear side of the second-stage opening annular strip line K2 is connected with the capacitor C21 through the fifth metal column H21;
a capacitor C22 is arranged below the corner point of the right rear side of the second-stage opening annular strip line K2, a sixth metal column H22 is arranged between the corner point of the right rear side of the second-stage opening annular strip line K2 and the capacitor C22, and the corner point of the right rear side of the second-stage opening annular strip line K2 is connected with the capacitor C22 through the sixth metal column H22;
a capacitor C23 is arranged below the corner point of the left front side of the second-stage opening annular strip line K2, a seventh metal column H23 is arranged between the corner point of the left front side of the second-stage opening annular strip line K2 and the capacitor C23, and the corner point of the left front side of the second-stage opening annular strip line K2 is connected with the capacitor C23 through the seventh metal column H23;
a capacitor C24 is arranged below the corner point of the right front side of the second-stage opening annular strip line K2, an eighth metal column H24 is arranged between the corner point of the right front side of the second-stage opening annular strip line K2 and the capacitor C24, and the corner point of the right front side of the second-stage opening annular strip line K2 is connected with the capacitor C24 through the eighth metal column H24;
a capacitor C31 is arranged below the corner point of the left rear side of the third-stage opening annular strip line K3, a ninth metal column H31 is arranged between the corner point of the left rear side of the third-stage opening annular strip line K3 and the capacitor C31, and the corner point of the left rear side of the third-stage opening annular strip line K3 is connected with the capacitor C31 through the ninth metal column H31;
a capacitor C32 is arranged below the corner point of the right rear side of the third-stage split annular strip line K3, a tenth metal column H32 is arranged between the corner point of the right rear side of the third-stage split annular strip line K3 and the capacitor C32, and the corner point of the right rear side of the third-stage split annular strip line K3 is connected with the capacitor C32 through the tenth metal column H32;
a capacitor C33 is arranged below the corner point of the left front side of the third-stage opening annular strip line K3, an eleventh metal column H33 is arranged between the corner point of the left front side of the third-stage opening annular strip line K3 and the capacitor C33, and the corner point of the left front side of the third-stage opening annular strip line K3 is connected with the capacitor C33 through the eleventh metal column H33;
a capacitor C34 is arranged below the corner point of the right front side of the third-stage split annular strip line K3, a twelfth metal column H34 is arranged between the corner point of the right front side of the third-stage split annular strip line K3 and the capacitor C34, and the corner point of the right front side of the third-stage split annular strip line K3 is connected with the capacitor C34 through the twelfth metal column H34;
a capacitor C41 is arranged below the corner point of the left rear side of the fourth-stage opening annular strip line K4, a thirteenth metal column H41 is arranged between the corner point of the left rear side of the fourth-stage opening annular strip line K4 and the capacitor C41, and the corner point of the left rear side of the fourth-stage opening annular strip line K4 is connected with the capacitor C41 through the thirteenth metal column H41;
a capacitor C42 is arranged on the lower side of the corner point of the right rear side of the fourth-stage opening annular strip line K4, a fourteenth metal column H42 is arranged between the corner point of the right rear side of the fourth-stage opening annular strip line K4 and the capacitor C42, and the corner point of the right rear side of the fourth-stage opening annular strip line K4 is connected with the capacitor C42 through the fourteenth metal column H42;
a capacitor C43 is arranged below the corner point of the fourth-stage opening annular strip line K4 on the left front side, a fifteenth metal column H43 is arranged between the corner point of the fourth-stage opening annular strip line K4 on the left front side and the capacitor C43, and the corner point of the fourth-stage opening annular strip line K4 on the left front side is connected with the capacitor C43 through the fifteenth metal column H43;
a capacitor C44 is arranged on the lower side of the corner point of the right front side of the fourth-stage opening annular strip line K4, a sixteenth metal column H44 is arranged between the corner point of the right front side of the fourth-stage opening annular strip line K4 and the capacitor C44, and the corner point of the right front side of the fourth-stage opening annular strip line K4 is connected with the capacitor C44 through the sixteenth metal column H44.
The input port P1 and the output port P2 are both 50 ohm impedance ports of a coplanar waveguide structure.
The capacitor loading type notch ring C-type filter is manufactured by a multilayer low-temperature co-fired ceramic process.
The first-stage notch annular stripline K1, the seventeenth metal pillar H51, the first Z-shaped stripline T1, the capacitor C11, the capacitor C12, the capacitor C13, the capacitor C14, the first metal pillar H11, the second metal pillar H12, the third metal pillar H13, and the fourth metal pillar H13 constitute a first-stage filter unit a 13, the second-stage notch annular stripline K13, the eighteenth metal pillar H13, the second Z-shaped stripline T13, the capacitor C13, the fifth metal pillar H13, the sixth metal pillar H13, the seventh metal pillar H13, and the eighth metal pillar H13 constitute a second-stage filter unit a 13, and the notch annular stripline K13, the capacitor C13, the seventeenth metal pillar H51, the capacitor C13, the ninth metal pillar H13, the ninth metal, The tenth metal pillar H32, the eleventh metal pillar H33, and the twelfth metal pillar H34 constitute a third-stage filter unit A3, and the fourth-stage open loop stripline K4, the capacitor C41, the capacitor C42, the capacitor C43, the capacitor C44, the thirteenth metal pillar H41, the fourteenth metal pillar H42, the fifteenth metal pillar H43, and the sixteenth metal pillar H44 constitute a fourth-stage filter unit a 4.
The capacitor loading type notch ring C-type filter adopts the LTCC technology to realize a new-structure filter which has the advantages of small volume, light weight, high reliability, excellent electrical property, simple structure, high yield, good batch consistency, low manufacturing cost and stable temperature performance; the invention has the advantages of light weight, small volume, high reliability, good electrical property, good temperature stability, good electrical property batch consistency, low cost, mass production and the like, and is suitable for occasions and corresponding systems which have strict requirements on volume, electrical property, temperature stability and reliability, such as communication of corresponding C frequency band, satellite communication and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a first stage filtering unit A1 according to the present invention;
FIG. 3 is a schematic diagram of a second stage A2 according to the present invention;
FIG. 4 is a schematic diagram of a third stage filtering unit A3 according to the present invention;
fig. 5 is a schematic structural diagram of a fourth-stage filtering unit a4 according to the present invention.
Detailed Description
1-5, the capacitive loading type notch ring C-type filter includes an input port P1, an output port P2, a first strip line layer, a second strip line layer, a first capacitor layer, a first metal pillar H11, a second metal pillar H12, a third metal pillar H13, a fourth metal pillar H14, a fifth metal pillar H21, a sixth metal pillar H22, a seventh metal pillar H23, an eighth metal pillar H24, a ninth metal pillar H31, a tenth metal pillar H32, an eleventh metal pillar H33, a twelfth metal pillar H34, a thirteenth metal pillar H41, a fourteenth metal pillar H42, a fifteenth metal pillar H43, a sixteenth metal pillar H44, a seventeenth metal pillar H51, and an eighteenth metal pillar H52, the input port P1 and the output port P2 are arranged at left-right intervals, the first strip line layer, and the second strip line layer and the first capacitor layer are arranged from top to bottom;
the first stripline layer includes a first stage open annular stripline K1, a second stage open annular stripline K2, a third stage open annular stripline K3, and a fourth stage open annular stripline K4, the opening direction of the first-stage opening annular strip line K1 is rightward, a third-stage opening annular strip line K3 is arranged below the first-stage opening annular strip line K1 at intervals, the opening direction of the third-stage opening annular strip line K3 is leftward, a second-stage split annular strip line K2 is arranged at the right side of the first-stage split annular strip line K1 at intervals, the opening direction of the second-stage split annular strip line K2 is opposite to the opening direction of the first-stage split annular strip line K1, a fourth-stage opening annular strip line K4 is arranged below the second-stage opening annular strip line K2 at intervals, and the opening direction of the fourth-stage opening annular strip line K4 is opposite to that of the third-stage opening annular strip line K3;
the second stripline layer comprises a first Z-shaped stripline T1 and a second Z-shaped stripline T2, one end of the first Z-shaped stripline T1 is connected with the input port P1, the other end of the first Z-shaped stripline T51 is connected with the first-stage open annular stripline K1 through a seventeenth metal pillar H51, one end of the second Z-shaped stripline T2 is connected with the output port P2, and the other end of the second Z-shaped stripline T2 is connected with the second-stage open annular stripline K2 through an eighteenth metal pillar H52;
the first capacitor layer comprises a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C41, a capacitor C42, a capacitor C43 and a capacitor C44, and the first stage open annular stripline K1, the second stage open annular stripline K2, the third stage open annular stripline K3 and the fourth stage open annular stripline K4 are rectangular open annular striplines;
a capacitor C11 is arranged below the corner point of the left rear side of the first-stage opening annular strip line K1, a first metal column H11 is arranged between the corner point of the left rear side of the first-stage opening annular strip line K1 and the capacitor C11, and the corner point of the left rear side of the first-stage opening annular strip line K1 is connected with the capacitor C11 through the first metal column H11;
a capacitor C12 is arranged below the corner point of the right rear side of the first-stage opening annular strip line K1, a second metal column H12 is arranged between the corner point of the right rear side of the first-stage opening annular strip line K1 and the capacitor C12, and the corner point of the right rear side of the first-stage opening annular strip line K1 is connected with the capacitor C12 through the second metal column H12;
a capacitor C13 is arranged below the corner point of the left front side of the first-stage opening annular strip line K1, a third metal column H13 is arranged between the corner point of the left front side of the first-stage opening annular strip line K1 and the capacitor C13, and the corner point of the left front side of the first-stage opening annular strip line K1 is connected with the capacitor C13 through the third metal column H13;
a capacitor C14 is arranged below the corner point of the right front side of the first-stage opening annular strip line K1, a fourth metal column H14 is arranged between the corner point of the right front side of the first-stage opening annular strip line K1 and the capacitor C14, the corner point of the right front side of the first-stage opening annular strip line K1 is connected with the capacitor C14 through the fourth metal column H14,
a capacitor C21 is arranged below the corner point of the left rear side of the second-stage opening annular strip line K2, a fifth metal column H21 is arranged between the corner point of the left rear side of the second-stage opening annular strip line K2 and the capacitor C21, and the corner point of the left rear side of the second-stage opening annular strip line K2 is connected with the capacitor C21 through the fifth metal column H21;
a capacitor C22 is arranged below the corner point of the right rear side of the second-stage opening annular strip line K2, a sixth metal column H22 is arranged between the corner point of the right rear side of the second-stage opening annular strip line K2 and the capacitor C22, and the corner point of the right rear side of the second-stage opening annular strip line K2 is connected with the capacitor C22 through the sixth metal column H22;
a capacitor C23 is arranged below the corner point of the left front side of the second-stage opening annular strip line K2, a seventh metal column H23 is arranged between the corner point of the left front side of the second-stage opening annular strip line K2 and the capacitor C23, and the corner point of the left front side of the second-stage opening annular strip line K2 is connected with the capacitor C23 through the seventh metal column H23;
a capacitor C24 is arranged below the corner point of the right front side of the second-stage opening annular strip line K2, an eighth metal column H24 is arranged between the corner point of the right front side of the second-stage opening annular strip line K2 and the capacitor C24, and the corner point of the right front side of the second-stage opening annular strip line K2 is connected with the capacitor C24 through the eighth metal column H24;
a capacitor C31 is arranged below the corner point of the left rear side of the third-stage opening annular strip line K3, a ninth metal column H31 is arranged between the corner point of the left rear side of the third-stage opening annular strip line K3 and the capacitor C31, and the corner point of the left rear side of the third-stage opening annular strip line K3 is connected with the capacitor C31 through the ninth metal column H31;
a capacitor C32 is arranged below the corner point of the right rear side of the third-stage split annular strip line K3, a tenth metal column H32 is arranged between the corner point of the right rear side of the third-stage split annular strip line K3 and the capacitor C32, and the corner point of the right rear side of the third-stage split annular strip line K3 is connected with the capacitor C32 through the tenth metal column H32;
a capacitor C33 is arranged below the corner point of the left front side of the third-stage opening annular strip line K3, an eleventh metal column H33 is arranged between the corner point of the left front side of the third-stage opening annular strip line K3 and the capacitor C33, and the corner point of the left front side of the third-stage opening annular strip line K3 is connected with the capacitor C33 through the eleventh metal column H33;
a capacitor C34 is arranged below the corner point of the right front side of the third-stage split annular strip line K3, a twelfth metal column H34 is arranged between the corner point of the right front side of the third-stage split annular strip line K3 and the capacitor C34, and the corner point of the right front side of the third-stage split annular strip line K3 is connected with the capacitor C34 through the twelfth metal column H34;
a capacitor C41 is arranged below the corner point of the left rear side of the fourth-stage opening annular strip line K4, a thirteenth metal column H41 is arranged between the corner point of the left rear side of the fourth-stage opening annular strip line K4 and the capacitor C41, and the corner point of the left rear side of the fourth-stage opening annular strip line K4 is connected with the capacitor C41 through the thirteenth metal column H41;
a capacitor C42 is arranged on the lower side of the corner point of the right rear side of the fourth-stage opening annular strip line K4, a fourteenth metal column H42 is arranged between the corner point of the right rear side of the fourth-stage opening annular strip line K4 and the capacitor C42, and the corner point of the right rear side of the fourth-stage opening annular strip line K4 is connected with the capacitor C42 through the fourteenth metal column H42;
a capacitor C43 is arranged below the corner point of the fourth-stage opening annular strip line K4 on the left front side, a fifteenth metal column H43 is arranged between the corner point of the fourth-stage opening annular strip line K4 on the left front side and the capacitor C43, and the corner point of the fourth-stage opening annular strip line K4 on the left front side is connected with the capacitor C43 through the fifteenth metal column H43;
a capacitor C44 is arranged on the lower side of the corner point of the right front side of the fourth-stage opening annular strip line K4, a sixteenth metal column H44 is arranged between the corner point of the right front side of the fourth-stage opening annular strip line K4 and the capacitor C44, and the corner point of the right front side of the fourth-stage opening annular strip line K4 is connected with the capacitor C44 through the sixteenth metal column H44. The input port P1 and the output port P2 are both 50 ohm impedance ports of a coplanar waveguide structure.
The capacitor loading type notch ring C-type filter is manufactured by a multilayer low-temperature co-fired ceramic process.
The first-stage notch annular stripline K1, the seventeenth metal pillar H51, the first Z-shaped stripline T1, the capacitor C11, the capacitor C12, the capacitor C13, the capacitor C14, the first metal pillar H11, the second metal pillar H12, the third metal pillar H13, and the fourth metal pillar H13 constitute a first-stage filter unit a 13, the second-stage notch annular stripline K13, the eighteenth metal pillar H13, the second Z-shaped stripline T13, the capacitor C13, the fifth metal pillar H13, the sixth metal pillar H13, the seventh metal pillar H13, and the eighth metal pillar H13 constitute a second-stage filter unit a 13, and the notch annular stripline K13, the capacitor C13, the seventeenth metal pillar H51, the capacitor C13, the ninth metal pillar H13, the ninth metal, The tenth metal pillar H32, the eleventh metal pillar H33, and the twelfth metal pillar H34 constitute a third-stage filter unit A3, and the fourth-stage open loop stripline K4, the capacitor C41, the capacitor C42, the capacitor C43, the capacitor C44, the thirteenth metal pillar H41, the fourteenth metal pillar H42, the fifteenth metal pillar H43, and the sixteenth metal pillar H44 constitute a fourth-stage filter unit a 4.
The capacitor loading type C-shaped filter with the notch ring is realized by adopting a multilayer low-temperature co-fired ceramic process, and the low-temperature co-fired ceramic material and the metal pattern are sintered at the temperature of about 900 ℃, so that the capacitor loading type C-shaped filter has very high reliability and temperature stability, and the structure adopts a three-dimensional integration, a multilayer folding structure and an outer surface metal shield to realize grounding and packaging, so that the volume is greatly reduced.
The size of the capacitor loading type notch ring C-shaped filter is only 4mm 6mm 1.5 mm.
The capacitor loading type notch ring C-type filter adopts the LTCC technology to realize a new-structure filter which has the advantages of small volume, light weight, high reliability, excellent electrical property, simple structure, high yield, good batch consistency, low manufacturing cost and stable temperature performance; the invention has the advantages of light weight, small volume, high reliability, good electrical property, good temperature stability, good electrical property batch consistency, low cost, mass production and the like, and is suitable for occasions and corresponding systems which have strict requirements on volume, electrical property, temperature stability and reliability, such as communication of corresponding C frequency band, satellite communication and the like.
Claims (4)
1. A capacitor loading type notch ring C type filter is characterized in that: the capacitive touch panel comprises an input port P1, an output port P2, a first strip line layer, a second strip line layer, a first capacitor layer, a first metal column H11, a second metal column H12, a third metal column H13, a fourth metal column H14, a fifth metal column H21, a sixth metal column H22, a seventh metal column H23, an eighth metal column H24, a ninth metal column H31, a tenth metal column H32, an eleventh metal column H33, a twelfth metal column H34, a thirteenth metal column H41, a fourteenth metal column H42, a fifteenth metal column H43, a sixteenth metal column H44, a seventeenth metal column H51 and an eighteenth metal column H52, wherein the input port P1 and the output port P2 are arranged at intervals from left to right, the first strip line layer is arranged sequentially from top to bottom, and the second strip line layer and the first capacitor layer are arranged sequentially from top to bottom;
the first stripline layer includes a first stage open annular stripline K1, a second stage open annular stripline K2, a third stage open annular stripline K3, and a fourth stage open annular stripline K4, the opening direction of the first-stage opening annular strip line K1 is rightward, a third-stage opening annular strip line K3 is arranged below the first-stage opening annular strip line K1 at intervals, the opening direction of the third-stage opening annular strip line K3 is leftward, a second-stage split annular strip line K2 is arranged at the right side of the first-stage split annular strip line K1 at intervals, the opening direction of the second-stage split annular strip line K2 is opposite to the opening direction of the first-stage split annular strip line K1, a fourth-stage opening annular strip line K4 is arranged below the second-stage opening annular strip line K2 at intervals, and the opening direction of the fourth-stage opening annular strip line K4 is opposite to that of the third-stage opening annular strip line K3;
the second stripline layer comprises a first Z-shaped stripline T1 and a second Z-shaped stripline T2, one end of the first Z-shaped stripline T1 is connected with the input port P1, the other end of the first Z-shaped stripline T51 is connected with the first-stage open annular stripline K1 through a seventeenth metal pillar H51, one end of the second Z-shaped stripline T2 is connected with the output port P2, and the other end of the second Z-shaped stripline T2 is connected with the second-stage open annular stripline K2 through an eighteenth metal pillar H52;
the first capacitor layer comprises a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C41, a capacitor C42, a capacitor C43 and a capacitor C44, and the first stage open annular stripline K1, the second stage open annular stripline K2, the third stage open annular stripline K3 and the fourth stage open annular stripline K4 are rectangular open annular striplines;
a capacitor C11 is arranged below the corner point of the left rear side of the first-stage opening annular strip line K1, a first metal column H11 is arranged between the corner point of the left rear side of the first-stage opening annular strip line K1 and the capacitor C11, and the corner point of the left rear side of the first-stage opening annular strip line K1 is connected with the capacitor C11 through the first metal column H11;
a capacitor C12 is arranged below the corner point of the right rear side of the first-stage opening annular strip line K1, a second metal column H12 is arranged between the corner point of the right rear side of the first-stage opening annular strip line K1 and the capacitor C12, and the corner point of the right rear side of the first-stage opening annular strip line K1 is connected with the capacitor C12 through the second metal column H12;
a capacitor C13 is arranged below the corner point of the left front side of the first-stage opening annular strip line K1, a third metal column H13 is arranged between the corner point of the left front side of the first-stage opening annular strip line K1 and the capacitor C13, and the corner point of the left front side of the first-stage opening annular strip line K1 is connected with the capacitor C13 through the third metal column H13;
a capacitor C14 is arranged below the corner point of the right front side of the first-stage opening annular strip line K1, a fourth metal column H14 is arranged between the corner point of the right front side of the first-stage opening annular strip line K1 and the capacitor C14, and the corner point of the right front side of the first-stage opening annular strip line K1 is connected with the capacitor C14 through the fourth metal column H14;
a capacitor C21 is arranged below the corner point of the left rear side of the second-stage opening annular strip line K2, a fifth metal column H21 is arranged between the corner point of the left rear side of the second-stage opening annular strip line K2 and the capacitor C21, and the corner point of the left rear side of the second-stage opening annular strip line K2 is connected with the capacitor C21 through the fifth metal column H21;
a capacitor C22 is arranged below the corner point of the right rear side of the second-stage opening annular strip line K2, a sixth metal column H22 is arranged between the corner point of the right rear side of the second-stage opening annular strip line K2 and the capacitor C22, and the corner point of the right rear side of the second-stage opening annular strip line K2 is connected with the capacitor C22 through the sixth metal column H22;
a capacitor C23 is arranged below the corner point of the left front side of the second-stage opening annular strip line K2, a seventh metal column H23 is arranged between the corner point of the left front side of the second-stage opening annular strip line K2 and the capacitor C23, and the corner point of the left front side of the second-stage opening annular strip line K2 is connected with the capacitor C23 through the seventh metal column H23;
a capacitor C24 is arranged below the corner point of the right front side of the second-stage opening annular strip line K2, an eighth metal column H24 is arranged between the corner point of the right front side of the second-stage opening annular strip line K2 and the capacitor C24, and the corner point of the right front side of the second-stage opening annular strip line K2 is connected with the capacitor C24 through the eighth metal column H24;
a capacitor C31 is arranged below the corner point of the left rear side of the third-stage opening annular strip line K3, a ninth metal column H31 is arranged between the corner point of the left rear side of the third-stage opening annular strip line K3 and the capacitor C31, and the corner point of the left rear side of the third-stage opening annular strip line K3 is connected with the capacitor C31 through the ninth metal column H31;
a capacitor C32 is arranged below the corner point of the right rear side of the third-stage split annular strip line K3, a tenth metal column H32 is arranged between the corner point of the right rear side of the third-stage split annular strip line K3 and the capacitor C32, and the corner point of the right rear side of the third-stage split annular strip line K3 is connected with the capacitor C32 through the tenth metal column H32;
a capacitor C33 is arranged below the corner point of the left front side of the third-stage opening annular strip line K3, an eleventh metal column H33 is arranged between the corner point of the left front side of the third-stage opening annular strip line K3 and the capacitor C33, and the corner point of the left front side of the third-stage opening annular strip line K3 is connected with the capacitor C33 through the eleventh metal column H33;
a capacitor C34 is arranged below the corner point of the right front side of the third-stage split annular strip line K3, a twelfth metal column H34 is arranged between the corner point of the right front side of the third-stage split annular strip line K3 and the capacitor C34, and the corner point of the right front side of the third-stage split annular strip line K3 is connected with the capacitor C34 through the twelfth metal column H34;
a capacitor C41 is arranged below the corner point of the left rear side of the fourth-stage opening annular strip line K4, a thirteenth metal column H41 is arranged between the corner point of the left rear side of the fourth-stage opening annular strip line K4 and the capacitor C41, and the corner point of the left rear side of the fourth-stage opening annular strip line K4 is connected with the capacitor C41 through the thirteenth metal column H41;
a capacitor C42 is arranged on the lower side of the corner point of the right rear side of the fourth-stage opening annular strip line K4, a fourteenth metal column H42 is arranged between the corner point of the right rear side of the fourth-stage opening annular strip line K4 and the capacitor C42, and the corner point of the right rear side of the fourth-stage opening annular strip line K4 is connected with the capacitor C42 through the fourteenth metal column H42;
a capacitor C43 is arranged below the corner point of the fourth-stage opening annular strip line K4 on the left front side, a fifteenth metal column H43 is arranged between the corner point of the fourth-stage opening annular strip line K4 on the left front side and the capacitor C43, and the corner point of the fourth-stage opening annular strip line K4 on the left front side is connected with the capacitor C43 through the fifteenth metal column H43;
a capacitor C44 is arranged on the lower side of the corner point of the right front side of the fourth-stage opening annular strip line K4, a sixteenth metal column H44 is arranged between the corner point of the right front side of the fourth-stage opening annular strip line K4 and the capacitor C44, and the corner point of the right front side of the fourth-stage opening annular strip line K4 is connected with the capacitor C44 through the sixteenth metal column H44.
2. A capacitively loaded notch-ring C-type filter according to claim 1, wherein: the input port P1 and the output port P2 are both 50 ohm impedance ports of a coplanar waveguide structure.
3. A capacitively loaded notch-ring C-type filter according to claim 1, wherein: the capacitor loading type notch ring C-type filter is manufactured by a multilayer low-temperature co-fired ceramic process.
4. A capacitively loaded notch-ring C-type filter according to claim 1, wherein: the first-stage notch annular stripline K1, the seventeenth metal pillar H51, the first Z-shaped stripline T1, the capacitor C11, the capacitor C12, the capacitor C13, the capacitor C14, the first metal pillar H11, the second metal pillar H12, the third metal pillar H13, and the fourth metal pillar H13 constitute a first-stage filter unit a 13, the second-stage notch annular stripline K13, the eighteenth metal pillar H13, the second Z-shaped stripline T13, the capacitor C13, the fifth metal pillar H13, the sixth metal pillar H13, the seventh metal pillar H13, and the eighth metal pillar H13 constitute a second-stage filter unit a 13, and the notch annular stripline K13, the capacitor C13, the seventeenth metal pillar H51, the capacitor C13, the ninth metal pillar H13, the ninth metal, The tenth metal pillar H32, the eleventh metal pillar H33, and the twelfth metal pillar H34 constitute a third-stage filter unit A3, and the fourth-stage open loop stripline K4, the capacitor C41, the capacitor C42, the capacitor C43, the capacitor C44, the thirteenth metal pillar H41, the fourteenth metal pillar H42, the fifteenth metal pillar H43, and the sixteenth metal pillar H44 constitute a fourth-stage filter unit a 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610762431.0A CN106129551B (en) | 2016-08-28 | 2016-08-28 | Capacitor loading type notch ring C-type filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762431.0A CN106129551B (en) | 2016-08-28 | 2016-08-28 | Capacitor loading type notch ring C-type filter |
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| CN106129551A CN106129551A (en) | 2016-11-16 |
| CN106129551B true CN106129551B (en) | 2020-04-14 |
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| CN201610762431.0A Active CN106129551B (en) | 2016-08-28 | 2016-08-28 | Capacitor loading type notch ring C-type filter |
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|---|---|---|---|---|
| US5055809A (en) * | 1988-08-04 | 1991-10-08 | Matsushita Electric Industrial Co., Ltd. | Resonator and a filter including the same |
| CN103985930A (en) * | 2014-05-09 | 2014-08-13 | 南京理工大学 | Band-pass filter of novel snap ring strip line structure |
| CN104332682A (en) * | 2014-11-14 | 2015-02-04 | 南京波而特电子科技有限公司 | Band-pass filter based on split ring microstrip line |
| CN104900950A (en) * | 2015-06-18 | 2015-09-09 | 西安电子科技大学 | Electrically tunable four-passband filter based on double layered resonator |
| CN206059600U (en) * | 2016-08-28 | 2017-03-29 | 戴永胜 | A kind of capacitive load type landolsring c-type wave filter |
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2016
- 2016-08-28 CN CN201610762431.0A patent/CN106129551B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5055809A (en) * | 1988-08-04 | 1991-10-08 | Matsushita Electric Industrial Co., Ltd. | Resonator and a filter including the same |
| CN103985930A (en) * | 2014-05-09 | 2014-08-13 | 南京理工大学 | Band-pass filter of novel snap ring strip line structure |
| CN104332682A (en) * | 2014-11-14 | 2015-02-04 | 南京波而特电子科技有限公司 | Band-pass filter based on split ring microstrip line |
| CN104900950A (en) * | 2015-06-18 | 2015-09-09 | 西安电子科技大学 | Electrically tunable four-passband filter based on double layered resonator |
| CN206059600U (en) * | 2016-08-28 | 2017-03-29 | 戴永胜 | A kind of capacitive load type landolsring c-type wave filter |
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| Compact Size Microstrip Coupled Resonator Band Pass Filter Loaded with Lumped Capacitors;Ahmed A. Ibrahim et al.;《2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)》;20131231;全文 * |
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