CN116130910A - Electromagnetic band gap filtering power divider - Google Patents

Electromagnetic band gap filtering power divider Download PDF

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Publication number
CN116130910A
CN116130910A CN202211699667.6A CN202211699667A CN116130910A CN 116130910 A CN116130910 A CN 116130910A CN 202211699667 A CN202211699667 A CN 202211699667A CN 116130910 A CN116130910 A CN 116130910A
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power divider
electromagnetic
metal layer
band gap
resonators
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郭瑜
任鼎新
周勇
陈开心
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Jiangnan University
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Jiangnan University
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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
    • H01P1/207—Hollow waveguide filters
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/007—Manufacturing frequency-selective devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/008—Manufacturing resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention discloses an electromagnetic band gap filtering power divider, which comprises: a dielectric substrate; the top metal layer is arranged on the dielectric substrate and comprises a coplanar waveguide slot line, the input port, a plurality of output ports and a plurality of isolation resistors arranged on the output ports; the bottom metal layer is symmetrical with the top metal layer, is arranged below the dielectric layer, internally comprises an annular air groove, and is used for separating the metal bonding pad from surrounding radio frequency ground and welding a capacitor; and the reconstructed electromagnetic band gap resonators share the medium substrate, so that the small-size filtering power divider structure realizes multiband filtering response. The present invention achieves multi-band filter response and multiplexing by integrating a reconstructed electromagnetic bandgap resonator in multiple paths.

Description

Electromagnetic band gap filtering power divider
Technical Field
The invention relates to the technical field of filtering power dividers, in particular to an electromagnetic band gap filtering power divider
Background
With the rapid development of wireless communication systems now, there is a growing need for small, low cost, easy to integrate and high performance radio frequency devices. The power divider is used as a passive microwave device and is widely applied to modern radio frequency and microwave circuits. To improve frequency selectivity, power splitters are typically cascaded with bandpass filters, which increase circuit size and loss due to impedance mismatch in the integrated interconnect. In this case, a device capable of achieving both the frequency response and the power distribution functions, i.e., a filtering power divider (filtering power divider), has received great attention.
The filter power divider based on the traditional microstrip line structure has the advantages of low cost, easy integration and the like, but due to the limitation of quarter wavelength, the filter power divider has larger circuit size and is also easily influenced by a high-order spurious mode.
And for the substrate integrated waveguide (Substrate Integrated Waveguide, SIW) filter power divider, the filter power divider has the advantages of high Q value, low loss, easy integration and the like. However, at low frequencies, the SIW filter power divider is large in size due to wavelength limitations; at high frequencies, the machining difficulty is relatively high, and the machining accuracy must be high in order to achieve a stable operating frequency.
Electromagnetic band gap filters are of great interest due to their high inherent quality factor, low cost, ease of integration with radio frequency front end devices, and the like. However, the existing filter power divider has a larger size, generally has only one frequency band or two frequency bands, and is mainly focused on two paths of applications, so that it can be seen how to implement a multi-band and multi-output filter power divider is a problem to be solved at present.
Disclosure of Invention
The invention aims to provide an electromagnetic band gap filtering power divider, which solves the application defects of the existing filtering power divider that the frequency band number is small and the output end is small.
In order to solve the above technical problems, the present invention provides an electromagnetic bandgap filter power divider, including:
a dielectric substrate;
the top metal layer is arranged on the dielectric substrate and comprises a coplanar waveguide slot line, the input port, a plurality of output ports and a plurality of isolation resistors arranged on the output ports;
the bottom metal layer is symmetrical with the top metal layer, is arranged below the dielectric layer, internally comprises an annular air groove, and is used for separating the metal bonding pad from surrounding radio frequency ground and welding a capacitor;
and the reconstructed electromagnetic band gap resonators share the medium substrate, so that the small-size filtering power divider structure realizes multiband filtering response.
Preferably, metal columns which are periodically arranged are embedded in the dielectric substrate, and two ends of each metal column are connected with the top metal layer and the bottom metal layer to form a periodic lattice structure and a resonant cavity structure.
Preferably, the plurality of pairs of reconstructed electromagnetic bandgap resonators are placed side by side;
each pair of the reconstruction electromagnetic band resonators comprises two equivalent LC resonators and metal columns, and the coupling coefficients required by radius adjustment of the metal columns are adjusted, wherein the resonance metal columns of the electromagnetic band gap resonators are equivalent to inductors, and the inductance and the capacitor are connected in parallel to form an LC resonant circuit.
Preferably, each of the reconfigurable electromagnetic band resonators adjusts the operating frequency of the passband by adjusting the size of the capacitor.
Preferably, the top metal layer further comprises: a quasi-wilkinson power divider structure;
the input end of the quasi-Wilkinson power divider structure is connected with the input port, and the output end of the quasi-Wilkinson power divider structure is connected with the input ends of the plurality of pairs of reconstruction electromagnetic band gap resonators and is used for realizing equal power distribution of input signals.
Preferably, the top metal layer further comprises: a transmission line structure;
and one end of the transmission line structure is connected with the output ends of the plurality of reconstruction electromagnetic band gap resonators, and the other end of the transmission line structure is connected with the plurality of output ports.
Preferably, the top metal layer further comprises: an energy coupling structure;
the energy coupling structure is located on the top metal layer, comprising: coplanar waveguides, slot lines and circular open-circuit slot lines;
the input end and the output end of the pair of reconstruction electromagnetic band gap resonators are both of the energy coupling structure and are used for realizing energy coupling.
Preferably, the electromagnetic band gap filter power divider meets the required external quality factor by adjusting the length of the slot line and the diameter of the circular open-circuit slot line, and realizes good impedance matching.
Preferably, the capacitor is any one of a lumped capacitor, a MIM capacitor, and a varactor diode.
Preferably, the electromagnetic band gap filter power divider is prepared by any one of semiconductor processes.
According to the electromagnetic band gap filtering power divider provided by the invention, the capacitor is introduced, so that the frequency of the small-size filtering power divider structure can be reconfigured, the working frequency of the filtering power divider can be adjusted only by changing the capacitance value of the capacitor, the isolation between output ports is improved by adopting the isolation resistor at the output end, the suppression of signals between the output ports is increased, the multiplexing output is realized, and compared with other filtering power dividers, the multi-band filtering power divider is realized by adopting a plurality of pairs of resonators, the miniaturized design is realized, and the insertion loss of a circuit is reduced. The invention has the advantages of compact size, simple structure and easy integration, and realizes the advantages of multiband filtering and multiple outputs.
Drawings
For a clearer description of embodiments of the invention or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram showing the structural decomposition of a four-band, two-way output electromagnetic band gap filter power divider provided by the present invention;
FIG. 2 is a block diagram of a four-band, two-way output electromagnetic band gap filter power divider provided by the invention;
FIG. 3 is a schematic diagram of the bottom metal structure of a four-band, two-way output electromagnetic bandgap filter power divider provided by the present invention;
FIG. 4 is a graph showing a simulation characteristic of an embodiment of the present invention without adding a resistor R;
FIG. 5 shows an S parameter S according to a first embodiment of the present invention 11 、S 21 And S is 31 Is a simulation curve of (2);
FIG. 6 shows an S parameter S according to a first embodiment of the present invention 22 And S is 23 Is a simulation curve of (2);
FIG. 7 is a schematic diagram illustrating the structural decomposition of a four-way dual-band electromagnetic bandgap filter power divider according to the present invention;
FIG. 8 is a block diagram of a four-way dual-band electromagnetic bandgap filter power divider provided by the invention;
FIG. 9 is a schematic diagram of the top metal structure of a four-way dual-band electromagnetic bandgap filter power divider according to the present invention;
FIG. 10 shows an S parameter S according to a second embodiment of the present invention 11 、S 21 And S is 41 Is a simulation curve of (2);
FIG. 11 is a diagram showing S parameters S according to a second embodiment of the present invention 22 、S 24 And S is 23 Is a simulation curve of (a).
Detailed Description
The core of the invention is to provide an electromagnetic band gap filter power divider, which realizes multiband filter response through a plurality of reconstruction electromagnetic band gap resonators, realizes isolation between output ports by adopting isolation resistors, and realizes multiband multiplexing output.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, including dielectric substrate materials, metallic materials, and manufacturing processes not limited to PCB processes but other semiconductor processes may be used by those of ordinary skill in the art without inventive effort based on the embodiments of the present invention. Likewise, MIM capacitors or varactors may be used, and the operating frequency is optionally determined by changing the capacitance value, and is not limited to the operating frequency of the embodiment. .
Embodiment one:
referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram illustrating the structural decomposition of a four-band electromagnetic bandgap filter power divider according to the present invention; FIG. 2 is a block diagram of a four-band electromagnetic band gap filter power divider provided by the invention; the specific structure is as follows:
the embodiment provides an electromagnetic band gap filtering power divider with four frequency bands and two paths of outputs, please refer to fig. 1, and the specific structure includes: a top metal plate 101, a dielectric plate 102, a bottom metal plate 103, a capacitor 104, and periodic metal pillars 105 embedded in the dielectric plate;
the periodic metal posts 105 are connected to the upper and lower metal plates to constitute the basic structure of the EBG resonator. By varying the distance S between the periodic metal columns in the x-axis direction and the y-axis direction x And S is y The resonant frequency of the EBG resonator can be adjusted.
Referring to fig. 2, the quad-band filtering power divider is disposed on the dielectric plate 102, and the quad-band filtering power divider is a one-to-two power divider, and includes an input end 201, and two output ends 202 and 203; the four-band filtering power divider further comprises: a quasi-wilkinson divider structure 204, two quad-band filter structures 205 and a transmission line structure 206 with the same characteristic impedance as the output port. It can be seen that the two quad-band filtering structures 205 are embedded in the two symmetrical branches of the power divider, respectively.
The input part of the quasi-wilkinson power divider structure 204 is an input end 201, and the two output parts are respectively connected with the inputs of the two four-frequency band filtering structures 205, so that equal power distribution of energy is realized. The output of the quad band filter structure 205 is connected to a transmission line structure 206.
The quad-band filter structure 205 is composed of four pairs of EBG resonators, and the required coupling coefficient is adjusted by changing the radius of the coupling metal post 207. As the radius of the coupling metal post 207 increases, the magnetic coupling strength becomes weaker.
The energy transmission and coupling circuit is designed on the top metal layer. A CPW slotline structure is redesigned to achieve broadband coupling performance. Energy is transferred through the CPW power divider and converted from CPW mode to slot line mode, effectively coupling the energy into each electromagnetic bandgap resonator. The external Q value is adjusted by changing the slot line length, and the impedance matching can be adjusted by changing the radius of the circular open slot line.
In order to obtain better output isolation, the quad-band filter power divider of the present embodiment further includes an isolation resistor R, where the resistor R is located between two symmetrical transmission line structures 206. The resistor R is preferably 100 ohms.
As shown in fig. 3, fig. 3 is a schematic diagram of a bottom metal structure of a four-band and two-path output electromagnetic band gap filter power divider, which is provided by the present invention, and the specific structure is as follows: the bottom metal layer is embedded with an annular air slot 301 separating the metal pad 302 from the off-annular rf for soldering the lumped capacitor C. The lumped capacitor between the metal pad 302 and the signal ground is connected in parallel with the resonating metal posts located on the metal pad, thereby forming an LC parallel resonance.
The four-band filtering power divider of the embodiment introduces a lumped capacitor, so that the working frequency of each passband can be independently adjusted by changing the size of the lumped capacitor, and the capacitor can also use a built-in MIM capacitor or a varactor.
In the design implementation process of the four-band filtering power divider of the present embodiment, a parity-mode analysis method is used due to structural symmetry. The EBG resonator is first designed by selecting an appropriate lumped capacitor according to the operating frequency. And then determining that the radius of the coupling metal column meets the required coupling coefficient based on a coupling matrix synthesis method. And then, replacing a quarter-wavelength transmission line in the traditional Wilkinson power divider by four pairs of EBG resonators to realize a four-band filter response. To achieve good isolation performance between the two output ports, a resistor R is loaded between the two symmetrical transmission line structures 206. And finally, performing simulation optimization by using commercial electromagnetic simulation software HFSS, and determining the size parameters of the four-frequency band filtering power divider. The value of the resistor R is continuously adjusted through parameter scanning so as to obtain the optimal isolation performance and return loss.
In the four-band filtering power divider of this embodiment, after the radio frequency signal is input through the input port 201, the radio frequency signal is divided into two paths through the power dividing structure 204, and after each path passes through the four-band filtering portion 205, the radio frequency signal is output through the two output ends 202 and 203 respectively, so that functions of four-band filtering response and power distribution are realized.
Fig. 4 shows a simulated filter response of the four-band filter power divider without isolation resistors. According to the odd-even mode characteristic of the four-band filtering power divider, whether the resistor R is arranged or not does not affect the filtering response, but only affects the isolation S 23 . Once the filter response is determined, isolation and matching between the output ports can be achieved by changing the resistance value of the isolation resistor R by a parity-mode analysis method. The relevant S parameters of the four-band filter power divider can be obtained as follows:
S 11 ＝S 11e
Figure BDA0004023553850000061
S 22 ＝(S 22e +S 22o )/2
S 32 ＝(S 22e -S 22o )/2
wherein S is 11 To input return loss S 21 S is the insertion loss 22 To output return loss S 32 Isolation between output ports, S 11e S as an even mode equivalent circuit 11 ，S 21e S as an even mode equivalent circuit 21 ，S 22e S as an even mode equivalent circuit 22 ，S 22o S as an odd mode equivalent circuit 22 。
So to achieve good matching and isolation of the output ports, S can be derived 22o And S is 22e Should be as close to zero as possible.
Fig. 5 and 6 show S-parameter simulation results of the four-band filter power divider, and as shown in fig. 5, center frequencies of four pass bands and 3-dB relative bandwidths (FBW) are 2.0,2.38,3.0,4.23ghz and 5%,3%,3%,3%, respectively. The return loss at the center frequencies of the four pass bands are 25.75, 22.9, 28.6, 30.1dB, respectively, and the minimum insertion loss within the pass bands is better than 2dB (excluding the ideal 3dB power splitting loss), as shown in fig. 6, the output isolation at the center frequencies of the four pass bands is better than 14dB.
In the embodiment, the specific structure of the four-band electromagnetic band gap filtering power divider is described in detail, the four-band filter is adopted to realize multi-band filtering response, then the isolation between output ports is improved by adopting the isolation resistor at the output end, and the capacitance value of the lumped capacitor only needs to be changed by introducing the lumped capacitor, so that the small-size filtering power divider structure can realize frequency reconstruction. The invention adopts the design mode of combining the filter and the power divider, and simultaneously realizes the frequency selection and the power distribution performance, so that the equipment at the front end of the radio frequency is smaller, and the extra loss generated by the impedance mismatch during the cascade of devices is reduced.
Embodiment two:
in this embodiment, by modifying the structure of the top metal layer, a four-way dual-band electromagnetic bandgap filter power divider is provided, please refer to fig. 7 and 8, fig. 7 is a schematic diagram illustrating the structural decomposition of the four-way dual-band electromagnetic bandgap filter power divider provided by the present invention; FIG. 8 is a block diagram of a four-way dual-band electromagnetic bandgap filter power divider provided by the invention; the specific structure is as follows:
the four-way dual-band electromagnetic band gap filtering power divider provided by the embodiment comprises: top metal plate 701, dielectric plate 702, bottom metal plate 703, lumped capacitors 704, and periodic metal pillars 705 embedded in the dielectric plate.
The periodic metal posts 705 are connected to the upper and lower metal plates to constitute the basic structure of the EBG resonator. By varying the distance S in the x-axis direction and the y-axis direction between the periodic metal posts, similarly to the embodiment x And S is y The resonant frequency of the EBG resonator can be adjusted.
As shown in fig. 8, the four-way dual-band filtering power divider is also of a symmetrical structure. The four-way dual-band filter power divider is disposed on a dielectric substrate 702. The four-way dual-band filtering power divider is a one-to-four power divider and comprises an input terminal 801 and four output terminals 802, 803, 804 and 805. The four outputs are symmetrically distributed about input 801, with outputs 802 (804) and 803 (805) being a pair of adjacent outputs; the outputs 802 (803) and 804 (805) are a pair of non-adjacent output ports. The four-way dual-band filtering power divider further comprises: four dual band filtering structures 807. It can be seen that the four dual band filter structures 807 are embedded in the four symmetrical branches of the power divider, respectively, to achieve a dual band filter response.
The dual band filter structure 807 is composed of two pairs of EBG resonators, and the desired coupling coefficient is adjusted by changing the radius of the coupling metal posts 806. As the radius of the coupling metal post 806 increases, the magnetic coupling strength becomes weaker.
Referring to fig. 9, fig. 9 is a schematic diagram of a top metal structure of a four-path dual-band electromagnetic bandgap filter power divider provided by the present invention, it can be seen that two symmetrical branches 901 and 902 divide an input into two paths, an output end of each branch is connected to an input end of two symmetrical filter structures, and an output end of each filter structure is respectively connected to transmission lines 903, 904, 905 and 906, so as to finally realize four paths of output.
The energy transmission and coupling circuit is designed on the top metal plate. The energy is split into two paths through the branches 901, 902, and then efficiently coupled into each electromagnetic bandgap resonator through the CPW slotline structure. The external Q value and impedance matching are adjusted by varying the slot line length and the radius of the circular open slot line.
In order to obtain better isolation performance of adjacent output ports, the four-path dual-band filtering power divider of the embodiment further comprises two isolation resistors R2. Each resistor R2 is located between two symmetrical transmission line structures 802 (804) and 803 (805). The best adjacent output port isolation performance is obtained by varying the value of resistor R2 and offset distance Δd.
In order to obtain better isolation performance of non-adjacent output ports, the four-path dual-band filter power divider of the embodiment further comprises an isolation network formed by parallel connection of a resistor R1 and a capacitor C1. The isolation network is loaded between two symmetrical branches 901 and 902. The values of the optimized resistor R1 and the capacitor C1 are adjusted to obtain better non-adjacent output port isolation performance.
Fig. 10 and 11 show S-parameter simulation results of the four-frequency dual-band filtering power divider, and as shown in fig. 10, the center frequencies of the two pass bands and the 3-dB relative bandwidths (FBW) are 2.16, 3.35GHz, 5.5% and 4.7%, respectively. The return loss at the center frequency of the two pass bands is 27.5 and 18dB respectively, and the minimum insertion loss in the pass bands is better than 1.3dB (excluding the ideal 6dB power splitting loss). As shown in fig. 11, the isolation of adjacent output ports at the center frequency is 18.75 dB, 16.72dB, respectively, and the isolation between non-adjacent output ports is better than 17.7dB over the entire frequency band.
In the present embodiment, a structure of a four-way dual-band filtering power divider is described in detail, and dual-band filtering response is realized by integrating four dual-band filters. Then, the isolation between output ports is improved by adopting an isolation resistor and a parallel RC isolation network, data analysis is carried out on the four-path dual-band filtering power divider, and then, a proper isolation capacitor and an isolation resistor are selected to achieve better output isolation performance. By adopting the method provided by the invention, a plurality of branches and a plurality of pairs of electromagnetic band gap resonators are added, and the multi-band and multi-output functions can be realized.
The electromagnetic band gap filter power divider provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (10)

1. An electromagnetic bandgap filtered power divider, comprising:
a dielectric substrate;
the top metal layer is arranged on the dielectric substrate and comprises a coplanar waveguide slot line, the input port, a plurality of output ports and a plurality of isolation resistors arranged on the output ports;
the bottom metal layer is symmetrical with the top metal layer, is arranged below the dielectric layer, internally comprises an annular air groove, and is used for separating the metal bonding pad from surrounding radio frequency ground and welding a capacitor;
and the reconstructed electromagnetic band gap resonators share the medium substrate, so that the small-size filtering power divider structure realizes multiband filtering response.
2. The electromagnetic band gap filter power divider of claim 1, wherein periodically arranged metal columns are embedded in the dielectric substrate, and two ends of each metal column are connected with the top metal layer and the bottom metal layer to form a periodic lattice structure and a resonant cavity structure.
3. The electromagnetic bandgap filtered power divider of claim 2, wherein said plurality of pairs of reconstructed electromagnetic bandgap resonators are placed side-by-side;
each pair of the reconstruction electromagnetic band resonators comprises two equivalent LC resonators and metal columns, and the coupling coefficients required by radius adjustment of the metal columns are adjusted, wherein the resonance metal columns of the electromagnetic band gap resonators are equivalent to inductors, and the inductance and the capacitor are connected in parallel to form an LC resonant circuit.
4. The electromagnetic band gap filter power divider of claim 3, wherein each of the reconfigurable electromagnetic band resonators adjusts the operating frequency of the passband by adjusting the size of the capacitor.
5. The electromagnetic bandgap filtered power divider of claim 2, wherein said top metal layer further comprises: a quasi-wilkinson power divider structure;
the input end of the quasi-Wilkinson power divider structure is connected with the input port, and the output end of the quasi-Wilkinson power divider structure is connected with the input ends of the plurality of pairs of reconstruction electromagnetic band gap resonators and is used for realizing equal power distribution of input signals.
6. The electromagnetic bandgap filtered power divider of claim 2, wherein said top metal layer further comprises: a transmission line structure;
and one end of the transmission line structure is connected with the output ends of the plurality of reconstruction electromagnetic band gap resonators, and the other end of the transmission line structure is connected with the plurality of output ports.
7. The electromagnetic bandgap filtered power divider of claim 1, wherein said top metal layer further comprises: an energy coupling structure;
the energy coupling structure is located on the top metal layer, comprising: coplanar waveguides, slot lines and circular open-circuit slot lines;
the input end and the output end of the pair of reconstruction electromagnetic band gap resonators are both of the energy coupling structure and are used for realizing energy coupling.
8. The electromagnetic bandgap filtered power divider according to claim 7, wherein said electromagnetic bandgap filtered power divider achieves good impedance matching by adjusting the length of said slot line, the diameter of said circular open-circuit slot line to meet a desired external quality factor.
9. The electromagnetic bandgap filtered power divider of claim 1, wherein said capacitor is any one of a lumped capacitor, a MIM capacitor and a varactor.
10. The electromagnetic bandgap filter power divider of claim 1, wherein said electromagnetic bandgap filter power divider is fabricated using any of semiconductor processes.
CN202211699667.6A 2022-12-28 2022-12-28 Electromagnetic band gap filtering power divider Pending CN116130910A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116759779A (en) * 2023-08-22 2023-09-15 安徽蓝讯通信科技有限公司 5G millimeter wave filtering power division module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116759779A (en) * 2023-08-22 2023-09-15 安徽蓝讯通信科技有限公司 5G millimeter wave filtering power division module
CN116759779B (en) * 2023-08-22 2023-11-10 安徽蓝讯通信科技有限公司 5G millimeter wave filtering power division module

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