CN103606722A - Lamination medium triplexer - Google Patents
Lamination medium triplexer Download PDFInfo
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- CN103606722A CN103606722A CN201310443786.XA CN201310443786A CN103606722A CN 103606722 A CN103606722 A CN 103606722A CN 201310443786 A CN201310443786 A CN 201310443786A CN 103606722 A CN103606722 A CN 103606722A
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Abstract
The invention discloses a sheet lamination medium triplexer. The triplexer comprises a substrate, a base pin arranged outside the substrate and a circuit structure layer arranged in the substrate. The circuit structure layer comprises a first high pass filter used for filtering low-mid frequency band signals in three-frequency-band signals, a first low pass filter used for filtering high frequency band signals in the three-frequency-band signals, a second low pass filter used for filtering middle frequency band signals in the low-mid frequency band signals, and a second high pass filter used for filtering low frequency band signals in the low-mid frequency band signals. The three-frequency-band signals are respectively input to the first high pass filter and the first low pass filter, and the high frequency band signals are directly output after the three-frequency-band signals pass through the first high pass filter; and after the three-frequency-band signals pass through the first low pass filter, the low-mid frequency band signals are respectively input to the second high pass filter and the second low pass filter, the middle frequency band signals are output after the low-mid frequency band signals pass through the second high pass filter; and the low frequency band signals are output after the low-mid frequency band signals pass through the second low pass filter.
Description
Technical field
The present invention discloses a kind of chip-type laminated medium triplexer, is applicable to, in various handheld terminal communication systems, comprise the laminated medium triplexer of Bluetooth system, wireless lan (wlan) system and gps system.
Background technology
Development along with electronic communication technology and mobile phone or perhaps handheld terminal application technology, mobile phone is not only confined to communication function already, but towards diversified multifunctional direction development, and in mobile phone, apply mostly be wireless telecommunications structure, as: Near Field Communication, there are bluetooth, a WiFi etc., global positioning system have a gps system, at present, the radio communication function of applying on hand-held terminal device, working frequency range, communications protocol etc. are as shown in the table:
Along with the handheld terminal function in communication system is more and more, especially wireless telecommunications are same can be from strength to strength, but, the size of hand-held terminal device does not but have corresponding increase, on the contrary along with people's psychological needs, the trend that the size of hand-held terminal device diminishes in addition gradually, will cause like this between different wireless communication modules and can produce mutual signal interference, this contradiction is just in the urgent need to carrying out the integrated of the integrated and device of function treatment IC, if and the realization of these systems was integrated in to same IC when upper, will relate to the separation of each frequency range and interference problem etc., how to solve the phase mutual interference between different radio communication module on same hand-held terminal device, become problem demanding prompt solution in industry.
Summary of the invention
For producing the problem of disturbing between above-mentioned each frequency range of hand-held terminal device of the prior art of mentioning, the invention provides a kind of new laminated medium triplexer, it is effective separated that its high pass filter by two groups of cascades and low-pass filtering can be carried out three frequency band signals, can not produce interference problem.
The technical scheme that the present invention solves its technical problem employing is: a kind of laminated medium triplexer, triplexer comprises matrix, be arranged on the pin outside matrix and be arranged on the circuit structure layer in matrix, circuit structure layer comprises the first high pass filter HPF1 for the medium and low frequency segment signal of filtering three frequency band signals, the the first low pass filter LPF1 that is used for the high frequency band signal of filtering three frequency band signals, for the second low pass filter LPF2 of the Mid Frequency signal of filtering medium and low frequency segment signal with for the second high pass filter HPF2 of the low-band signal of filtering medium and low frequency segment signal, three frequency band signals are inputted respectively the first high pass filter HPF1 and the first low pass filter LPF1, by directly exporting high frequency band signal after the first high pass filter HPF1, by the medium and low frequency segment signal after the first low pass filter LPF1, input respectively the second high pass filter HPF2 and the second low pass filter LPF2, medium and low frequency segment signal is exported Mid Frequency signal after by the second high pass filter HPF2, medium and low frequency segment signal is by output low frequency segment signal after the second low pass filter LPF2.
The technical scheme that the present invention solves its technical problem employing further comprises:
The first described high pass filter HPF1 adopts T-shaped filter construction, comprises capacitor C C1, capacitor C C2, capacitor C 1 and inductance L 1, and capacitor C C1 and capacitor C C2 are connected in series, and the common port of capacitor C C1 and capacitor C C2 is through capacitor C 1 and inductance L 1 ground connection of series connection; The first low pass filter LPF1 is capacitor C 1 and the inductance L 2 being connected in parallel; The second high pass filter HPF2 adopts T-shaped filter, comprises capacitor C 3, capacitor C 4, capacitor C 5 and inductance L 3, and capacitor C 3 and capacitor C 4 are connected in series, and the common port of capacitor C 3 and capacitor C 4 is by the capacitor C 5 and inductance L 3 ground connection that are connected in series; The second low pass filter LPF2 comprises capacitor C 6 and the inductance L 4 being connected in parallel, and in rear class, passes through ground capacity C7 ground connection again.
Described inductance L 1 comprises that two sections are U-shaped conducting line segment and connect and compose from beginning to end.
Described inductance L 2 comprises that three section lead sections connect and compose in turn by conduction joint pin head and the tail, and first paragraph conducting line segment is L-type, and second segment conducting line segment is U-shaped, and the 3rd section lead section is U-shaped.
Described inductance L 3 comprises that four section lead sections connect and compose in turn by conduction joint pin head and the tail, and first paragraph conducting line segment is U-shaped, and second segment conducting line segment is U-shaped, and the 3rd section lead section is inc rectangle, and the 4th section lead section is U-shaped.
Described inductance L 4 comprises that three section lead sections connect and compose in turn by conduction joint pin head and the tail, and first paragraph is L-type, and it is U-shaped that second segment is, and the 3rd section is L-type.
Described electric capacity adopts plate electrode to realize.
Described matrix outside is provided with direction flag.
The invention has the beneficial effects as follows: the present invention adopts LTCC technology to make integrated laminated medium triplexer, and it has, and volume is little, integrated level is high, high reliability.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is circuit block diagram of the present invention.
Fig. 3 is circuit theory diagrams of the present invention.
Fig. 4 is structural representation between interior layer of the present invention.
Fig. 5 is radio frequency parameter curve chart of the present invention.
Fig. 6 is the inner ground floor structural representation of the present invention.
Fig. 7 is the inner second layer structural representation of the present invention.
Fig. 8 is the inner three-decker schematic diagram of the present invention.
Fig. 9 is the inner four-layer structure schematic diagram of the present invention.
Figure 10 is the inner layer 5 structural representation of the present invention.
Figure 11 is the inner layer 6 structural representation of the present invention.
Figure 12 is the inner layer 7 structural representation of the present invention.
Figure 13 is inner the 8th layer of structural representation of the present invention.
In figure, 1-the first ground pin, 2-tri-frequency band signals input pins, 3-the second ground pin, 4-Mid Frequency signal output pin, 5-the 3rd ground pin, 6-high frequency band signal output pin, 7-the 4th ground pin, 8-low-band signal output pin, 9-direction flag, 10-ceramic matrix, 11-the 4th inductance electrode, 12 the 3rd inductance electrodes, 13-the second inductance electrode, 14-the first inductance electrode, the long conduction joint pin of 15-first, the long conduction joint pin of 16-second, 17-the second plate electrode, 18-the 6th plate electrode, 19-the tenth plate electrode, 20-the first plate electrode, 21-the 11 plate electrode, 22-the 7th plate electrode, 23-Siping City plate electrode, the long conduction joint pin of 24-the 3rd, 25-the 8th plate electrode, 26-the 12 plate electrode, 27-the 5th plate electrode, 28-the 3rd plate electrode, 29-the 9th plate electrode, 30-the 13 plate electrode, 31-the first connecting line, 32-the second connecting line.
Embodiment
The present embodiment is the preferred embodiment for the present invention, and other all its principles are identical with the present embodiment or approximate with basic structure, all within protection range of the present invention.
Please refer to accompanying drawing 2, principle of the present invention is mainly low pass filter and high pass filter for low-band signal and Mid Frequency signal and high frequency band signal (the high frequency low frequency in the present invention in circuit comparatively speaking) to be carried out separated, and then with low pass filter, carries out separated with high pass filter to low-band signal respectively with Mid Frequency signal; Namely two duplexers are integrated in a ceramic dielectric, thereby realize the function of triplexer.Be the present invention by the signal of three frequency ranges through low-pass filter circuit that can be by low-band signal and Mid Frequency signal with to carry out by the circuit of high pass filter of high frequency band signal signal separated, high-frequency signal and medium and low frequency signal are separated, the signal of medium and low frequency section is after the low pass filter of leading portion, again with low-pass filter circuit that can be by low-band signal with to carry out by the circuit of high pass filter of Mid Frequency signal signal separated, thereby obtain the signal of high, normal, basic three frequency ranges.
Incorporated by reference to referring to accompanying drawing 3, in the circuit structure in the present invention, triplexer circuit comprises two circuit of high pass filter (High Pass Filter:HPF), two low-pass filter circuits (Low Pass Filter:LPF); In the present embodiment, the high pass filter HPF1 that is responsible for separated high frequency band signal adopts T-shaped filter construction, mainly by capacitor C C1 and capacitor C C2, be connected in series, the common port of capacitor C C1 and capacitor C C2 (being intermediate node) forms through capacitor C 1 and inductance L 1 ground connection of series connection; The low pass filter LPF1 that is responsible for separated medium and low frequency segment signal, consists of the capacitor C 1 being connected in parallel and inductance L 2; That connect low pass filter LPF1 is high pass filter HPF2 and low pass filter LPF2, in the present embodiment, that be responsible for separated Mid Frequency signal is high pass filter HPF2, it adopts T-shaped filter, high pass filter HPF2 is capacitor C 3 and the capacitor C 4 being connected in series, and the common port of capacitor C 3 and capacitor C 4 (being intermediate node) consists of capacitor C 5 and inductance L 3 ground connection that are connected in series; The low pass filter LPF2 that is responsible for separated low-band signal, by capacitor C 6 shunt inductance L4, consists of ground capacity C7 ground connection in rear class again.
Incorporated by reference to referring to accompanying drawing 1, accompanying drawing 5 to accompanying drawing 13, structure of the present invention mainly comprises ceramic matrix 10, be arranged on the pin in ceramic matrix 10 outsides and be arranged on the circuit structure layer of ceramic matrix 10 inside.On ceramic matrix 10, be also provided with direction flag 9, for indicate user of the present invention to, prevent that it from connecing instead in use.In the present embodiment, the circuit structure layer of ceramic matrix 10 inside adopts stacked structure, has eight layers of structure in the present embodiment, wherein:
The 3rd section of 11C of the 4th inductance electrode 11 of series resonance inductor L4 in the 8th layer of low pass filter LPF2 that comprises low-frequency range, the 3rd section of 12C in series resonance inductor L2 the 3rd inductance electrode 12 in the low pass filter LPF1 of medium and low frequency section, the first inductance electrode 14 second segment 14B of the 4th section of 13D in the second inductance electrode 13 of the grounded inductor L3 of Mid Frequency high pass filter HPF2 and the grounded inductor L1 of high band high pass filter HPF1, wherein, the 3rd section of 11C of the 4th inductance electrode 11 is L-shaped, one end is connected with low-band signal output pin 8, the other end is connected with the second segment 11B of the 4th inductance electrode 11 by conduction joint pin, the 3rd section of 12C in the 3rd inductance electrode 12 takes the shape of the letter U, one end is connected with three frequency band signals input pins 2, the other end is connected with the second segment 12B in the 3rd inductance electrode 12 by conduction joint pin, the 4th section of 13D in the second inductance electrode 13 takes the shape of the letter U, one end is connected with the second ground pin 3, the other end is connected with the 3rd section of 13C in the second inductance electrode 13 by conduction joint pin, the first inductance electrode 14 second segment 14B are L-shaped, one end is connected with the 3rd ground pin 5, the other end is by conduction joint pin and the first inductance electrode 14 first paragraph 14A,
Layer 6 comprises the first paragraph 11A of the 4th inductance electrode 11, second segment 13B in first paragraph 12A in the 3rd inductance electrode 12 and the second inductance electrode 13, wherein, the first paragraph 11A of the 4th inductance electrode 11 is L-shaped, one end is connected with the second segment 11B of the 4th inductance electrode 11, the other end is connected with the first paragraph 12A in the 3rd inductance electrode 12, and be connected with 27 with 17 of the second layer by the second long conduction joint pin 16, first paragraph 12A in the 3rd inductance electrode 12 is L-shaped, one end is connected with the second segment 12B in the 3rd inductance electrode 12, the other end is connected with the first paragraph 11A of the 4th inductance electrode 11, second segment 13B in the second inductance electrode 13 takes the shape of the letter U, one end is connected with the 3rd section of 13C in the second inductance electrode 13, the other end is connected with the first paragraph 13A in the second inductance electrode 13 by conduction joint pin,
Layer 5 comprises the first paragraph 13A in the second inductance electrode 13, and the first paragraph 13A in the second inductance electrode 13 takes the shape of the letter U, and one end is connected with the second segment 13B in the second inductance electrode 13, and the other end connects by the 3rd long conduction joint pin 24 Yu Siping City plate electrodes 23;
The first plate electrode 20(of the 4th layer of resonant capacitance C2 that comprises medium and low frequency section low pass filter itself and the second plate electrode 17 form resonant capacitance C2), the first plate electrode 20 is obliquely installed, and its outboard end is connected with three frequency band signals input pins 2;
The 3rd layer of the second plate electrode 17(that comprises low-frequency range low pass filter resonant capacitance C6 itself and the 6th plate electrode 18 form resonant capacitance C6, wherein the second 17 whiles of plate electrode are as the pole plate of two electric capacity), the 3rd plate electrode 28(of the ground connection resonant capacitance C1 of high band high pass filter itself and the 9th plate electrode 29 form ground connection resonant capacitance C1), the plate electrode 23(of Siping City of Mid Frequency high pass filter ground connection series resonance capacitor C 5 itself and the 8th plate electrode 25 form ground connection series resonance capacitor C 5) and the 5th plate electrode 27 of the access capacitor C 3 of Mid Frequency high pass filter, the second plate electrode 17 and the 5th plate electrode 27 are electrically connected to by the first connecting line 31,
The second layer comprises that the 6th plate electrode 18(itself and the tenth plate electrode 19 of low-frequency range low pass filter ground capacity C7 form ground capacity C7), the 7th plate electrode 22(of the access capacitor C C1 of high band high pass filter itself and the 11 plate electrode 21 form access capacitor C C1), the 9th plate electrode 29 of the 8th plate electrode 25 of Mid Frequency high pass filter ground connection series resonance capacitor C 5 and the ground connection resonant capacitance C1 of high band high pass filter, the 7th plate electrode 22 and the 9th plate electrode 29 are electrically connected to by the second connecting line 32, the 6th plate electrode 18 is connected with low-band signal output pin 8,
Ground floor comprises the tenth plate electrode 19 of low-frequency range low pass filter ground capacity C7, the 11 plate electrode 21 of the access capacitor C C1 of high band high pass filter, the 13 plate electrode 30 of the 12 plate electrode 26 of the output capacitance C4 of Mid Frequency high pass filter and the output capacitance CC2 of high band high pass filter, the tenth plate electrode 19 is connected with the 4th ground pin 7 with the first ground pin 1 respectively, the 11 plate electrode 21 is connected with three frequency band signals input pins 2, the 12 plate electrode 26 is connected with Mid Frequency signal output pin 4, the 13 plate electrode 30 is connected with high frequency band signal output pin 6.
In the present embodiment, in laminated process, can be by regulating length and the wide size of adjusting electric capacity of each electric capacity substrate (plate electrode of electric capacity), its parallel plate capacitor formula is:
Wherein A is the area of battery lead plate, and unit is square micron; D is two distances between battery lead plate, and unit is all micron.
In the present embodiment, inductance adopts coil inductance form, adjusts the size of inductance value by regulating course spacing and area coil, and its coil inductance formula is:
Wherein N is the number of turns of coil, and h is the height of coil, and L is the length of coil, and w is the width of coil,
with
it is respectively the relative permeability of airborne magnetic permeability and medium.
The operation principle of laminated medium triplexer is that three frequency signals one are by the first plate electrode 20 and the 11 plate electrode 21 inputs, the first plate electrode 20 and the 11 plate electrode 21 form two electric capacity in parallel with the 7th plate electrode 22 respectively, two electric capacity are superimposed as the access capacitor C C1 of high band high pass filter, by the second connecting line 32, connect the ground connection resonator capacitor C1 of the 3rd plate electrode 28 and the 9th plate electrode 29 formation and pass through the first long conduction joint pin 15 and the first inductance electrode 14 afterwards, and the 13 capacitor C C2 output high frequency band signal of forming of plate electrode 30 and the 9th plate electrode 29, the 2nd, by the 3rd inductance electrode 12 inductance L 2 input medium and low frequency section low pass filters, the 3rd inductance electrode 12 inductance L 2 capacitor C 2 forming with electric first utmost point 20 of flat board and the second plate electrode 17 are also unified into medium and low frequency section low pass filter, by first connecting line 31 respectively with six plate electrode 18 with five plate electrode 27 be connected thereafter, the 6th plate electrode 18 and the second plate electrode 17 form low-frequency range low-pass filter capacitance C6 output low frequency segment signal, and form ground capacity C7 with both sides ground connection the tenth plate electrode 19, the high pass filter section of Mid Frequency, the 5th plate electrode 27 and the 8th plate electrode 25 form access capacitor C 3, the a part of Yu of the 8th plate electrode 25 Siping City plate electrode 23 forms ground connection resonant capacitance C5, Hou Siping City plate electrode 23 interconnects by joint pin and the second inductance electrode 13 grounded inductor L3, the 8th plate electrode 25 another part and the 12 plate electrode 26 form output capacitance C4, thus output Mid Frequency signal.
Laminated medium triplexer electrical property major influence factors in the present invention:
1, capacitor C 2 and inductance L 2 form the low pass filter LPF2 of medium and low frequency signal, lowpass frequency need to cover the signal of low-band signal and Mid Frequency by scope, the size of capacitor C 2 and inductance L 2 affects in-band insertion loss and the Out-of-band rejection of medium and low frequency signal, capacitor C 2 and inductance L 2 are larger, and low pass range frequencies is less;
2, the high pass filter HPF1 of high band forms by accessing capacitor C C1 and output capacitance CC2 and ground connection series resonance capacitor C 1 and grounded inductor L1; Access capacitor C C1 and output capacitance CC2 affect in-band insertion loss and the voltage standing wave ratio of high pass filter HPF1; Series resonance C1 and grounded inductor L1 affect the Out-of-band rejection of high pass filter HPF1, directly the transmission zero frequency outside impact band;
3, the high pass filter HPF2 of Mid Frequency forms by accessing capacitor C 3 and output capacitance C4 and ground connection series resonance capacitor C 5 and grounded inductor L6; Access capacitor C 3 and output capacitance C4 affect in-band insertion loss and the voltage standing wave ratio of high pass filter HPF2; Series resonance C5 and grounded inductor L6 affect the Out-of-band rejection of high pass filter HPF2, directly the transmission zero frequency outside impact band;
4, the low pass filter LPF2 of low-frequency range is comprised of parallel resonant inductor L4 and capacitor C 6 and ground capacity C7; The size of parallel resonant inductor L4 and capacitor C 6 determines lowpass frequency scope, and ground capacity C7 affects insertion loss and the voltage standing wave ratio of low pass filter LPF2;
The radio frequency parameter curve of the laminated medium triplexer in the present invention is as Fig. 4, what with circle, indicate is the radio frequency parameter curve S 12 that signal is input to low-band signal output, what with square, indicate is the radio frequency parameter curve S 13 that signal is input to the output of Mid Frequency signal, and what with triangle, indicate is the radio frequency parameter curve that signal is input to high frequency band signal output; Solid line is the return loss plot S11 of signal input.
The present invention adopts LTCC technology to make integrated laminated medium triplexer, and it has, and volume is little, integrated level is high, high reliability.
Claims (8)
1. a laminated medium triplexer, it is characterized in that: described triplexer comprises matrix, be arranged on the pin outside matrix and be arranged on the circuit structure layer in matrix, circuit structure layer comprises the first high pass filter HPF1 for the medium and low frequency segment signal of filtering three frequency band signals, the the first low pass filter LPF1 that is used for the high frequency band signal of filtering three frequency band signals, for the second low pass filter LPF2 of the Mid Frequency signal of filtering medium and low frequency segment signal with for the second high pass filter HPF2 of the low-band signal of filtering medium and low frequency segment signal, three frequency band signals are inputted respectively the first high pass filter HPF1 and the first low pass filter LPF1, by directly exporting high frequency band signal after the first high pass filter HPF1, by the medium and low frequency segment signal after the first low pass filter LPF1, input respectively the second high pass filter HPF2 and the second low pass filter LPF2, medium and low frequency segment signal is exported Mid Frequency signal after by the second high pass filter HPF2, medium and low frequency segment signal is by output low frequency segment signal after the second low pass filter LPF2.
2. laminated medium triplexer according to claim 1, it is characterized in that: the first described high pass filter HPF1 adopts T-shaped filter construction, comprise capacitor C C1, capacitor C C2, capacitor C 1 and inductance L 1, capacitor C C1 and capacitor C C2 are connected in series, and the common port of capacitor C C1 and capacitor C C2 is through capacitor C 1 and inductance L 1 ground connection of series connection; The first low pass filter LPF1 is capacitor C 1 and the inductance L 2 being connected in parallel; The second high pass filter HPF2 adopts T-shaped filter, comprises capacitor C 3, capacitor C 4, capacitor C 5 and inductance L 3, and capacitor C 3 and capacitor C 4 are connected in series, and the common port of capacitor C 3 and capacitor C 4 is by the capacitor C 5 and inductance L 3 ground connection that are connected in series; The second low pass filter LPF2 comprises capacitor C 6 and the inductance L 4 being connected in parallel, and in rear class, passes through ground capacity C7 ground connection again.
3. laminated medium triplexer according to claim 2, is characterized in that: described inductance L 1 comprises that two sections are U-shaped conducting line segment and connect and compose from beginning to end.
4. laminated medium triplexer according to claim 2, is characterized in that: described inductance L 2 comprises that three section lead sections connect and compose in turn by conduction joint pin head and the tail, and first paragraph conducting line segment is L-type, and second segment conducting line segment is U-shaped, and the 3rd section lead section is U-shaped.
5. laminated medium triplexer according to claim 2, it is characterized in that: described inductance L 3 comprises that four section lead sections connect and compose in turn by conduction joint pin head and the tail, first paragraph conducting line segment is U-shaped, second segment conducting line segment is U-shaped, the 3rd section lead section is inc rectangle, and the 4th section lead section is U-shaped.
6. laminated medium triplexer according to claim 2, is characterized in that: described inductance L 4 comprises that three section lead sections connect and compose in turn by conduction joint pin head and the tail, and first paragraph is L-type, and it is U-shaped that second segment is, and the 3rd section is L-type.
7. laminated medium triplexer according to claim 2, is characterized in that: described electric capacity adopts plate electrode to realize.
8. according to the laminated medium triplexer described in any one in claim 1 to 7, it is characterized in that: described matrix outside is provided with direction flag.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310443786.XA CN103606722B (en) | 2013-09-26 | 2013-09-26 | Lamination medium triplexer |
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| CN201310443786.XA CN103606722B (en) | 2013-09-26 | 2013-09-26 | Lamination medium triplexer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506155A (en) * | 2015-01-12 | 2015-04-08 | 深圳顺络电子股份有限公司 | Filter |
| CN104579218A (en) * | 2015-02-03 | 2015-04-29 | 深圳市麦捷微电子科技股份有限公司 | Novel miniaturized laminated type triplexer |
| CN109075771A (en) * | 2016-04-08 | 2018-12-21 | 谐振公司 | Radio-frequency filter, highly selective triplexer and communication equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428889A (en) * | 2001-12-27 | 2003-07-09 | 三星电机株式会社 | Triplexer and its multilayer structure |
| KR20050062168A (en) * | 2003-12-19 | 2005-06-23 | 엘지이노텍 주식회사 | Triplexer |
-
2013
- 2013-09-26 CN CN201310443786.XA patent/CN103606722B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428889A (en) * | 2001-12-27 | 2003-07-09 | 三星电机株式会社 | Triplexer and its multilayer structure |
| KR20050062168A (en) * | 2003-12-19 | 2005-06-23 | 엘지이노텍 주식회사 | Triplexer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506155A (en) * | 2015-01-12 | 2015-04-08 | 深圳顺络电子股份有限公司 | Filter |
| CN104579218A (en) * | 2015-02-03 | 2015-04-29 | 深圳市麦捷微电子科技股份有限公司 | Novel miniaturized laminated type triplexer |
| CN104579218B (en) * | 2015-02-03 | 2017-12-05 | 深圳市麦捷微电子科技股份有限公司 | One kind miniaturization lamination sheet type triplexer |
| CN109075771A (en) * | 2016-04-08 | 2018-12-21 | 谐振公司 | Radio-frequency filter, highly selective triplexer and communication equipment |
| CN109075771B (en) * | 2016-04-08 | 2022-08-16 | 谐振公司 | Radio frequency filter, high selectivity triplexer and communication apparatus |
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| Publication number | Publication date |
|---|---|
| CN103606722B (en) | 2015-10-28 |
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