CN102683775A - C-band low-insertion-loss and high-rejection miniature band-pass filter - Google Patents
C-band low-insertion-loss and high-rejection miniature band-pass filter Download PDFInfo
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Abstract
The invention relates to a C-band low-insertion-loss and high-rejection miniature band-pass filter which comprises 50-ohm impedance input/output ports, four parallel resonance units, three inter-stage coupling circuits, a zigzag cross coupling circuit and input and output inductors, wherein the 50-ohm impedance input/output ports are arranged on the surface of the band-pass filter, and the structures are all implemented by using a multilayer LTCC (low temperature co-fired ceramic) process technology. The band-pass filter disclosed by the invention has the advantages of good passband selectivity, good out-of-band rejection, low insertion loss, small volume, light weight, high reliability, good electrical properties, good phase frequency characteristics and linearity, good temperature stability, good electrical property batch consistency, low cost, capability of carrying out mass production, and the like. The band-pass filter is especially suitable to be used as a miniature microwave device in aviation, aerospace and radar systems, intelligent weapons for individual soldiers, and airborne and missile-borne wireless systems.
Description
Technical field
The present invention relates to a kind of filter, particularly a kind of C-band hangs down the high restraining band pass filter of Insertion Loss.
Background technology
In recent years, the wireless communications industry fast development, an urgent demand communication system to gentlier, direction littler, more portable, better performance develops.And filter is as the important devices in microwave/radio frequency, and its high-performance, low cost, high reliability and miniaturization have epochmaking meaning.The key technical indexes of describing this component capabilities has: passband operating frequency range, stop-band frequency scope, passband input/output voltage standing-wave ratio, passband insert loss, stopband attenuation, form factor, insertion phase shift and delay/frequency characteristic, temperature stability, volume, weight, reliability etc.Conventional filter design method; Like hair clip type filter construction, resonant cavity filter structure and coaxial line filter structure equal-volume with to insert loss bigger, (as: airborne, missile-borne, aerospace communication, portable wireless terminal, individual soldier's mobile communication terminal etc.) all are very limited in many application scenarios.
Summary of the invention
The object of the present invention is to provide the low high restraining band pass filter of Insertion Loss of C-band that a kind of volume is little, in light weight, reliability is high, temperature performance is stablized, electrical property excellent, electrical property consistency is good, cost is low in batches.
The technical scheme that realizes the object of the invention is: a kind of C-band hangs down the high restraining band pass filter of Insertion Loss; It is characterized in that comprising 50 ohmage input ports, input inductance, first order parallel resonance unit, the first electromagnetic coupled circuit, parallel resonance unit, the second level, the second electromagnetic coupled circuit, third level parallel resonance unit, the 3rd electromagnetic coupled circuit, fourth stage parallel resonance unit, the 4th electromagnetic coupled circuit, the outputting inductance of mounted on surface, 50 ohmage output port and earth terminals of mounted on surface; Input port is connected with input inductance; Output port is connected with outputting inductance; Parallelly connected first order parallel resonance unit, parallel resonance unit, the second level, third level parallel resonance unit and fourth stage parallel resonance unit between this outputting inductance and the input inductance, the first electromagnetic coupled circuit of between first order parallel resonance unit and parallel resonance unit, the second level, connecting; The second electromagnetic coupled circuit of connecting between parallel resonance unit, the second level and the third level parallel resonance unit; The 3rd electromagnetic coupled circuit of connecting between third level parallel resonance unit and the fourth stage parallel resonance unit; The 4th electromagnetic coupled circuit of connecting between the first order and fourth stage parallel resonance unit and the zigzag cross-couplings strip line; Described first order parallel resonance unit, parallel resonance unit, the second level, third level parallel resonance unit and fourth stage parallel resonance unit be ground connection respectively.
The present invention compared with prior art, its remarkable advantage is:
(1) the low high restraining band pass filter of Insertion Loss of the present invention's 4 gigahertz C-bands utilizes multilayer LTCC technology (LTCC) characteristics, adopts the stereoscopic multi-layer laminated construction to realize circuit element, reduced volume greatly;
(2) utilize the high characteristics of LTCC ceramic dielectric dielectric constant can significantly reduce component size equally;
(3) utilize the low Insertion Loss characteristics of LTCC material and unique circuit structure to realize excellent electric performance;
(4) utilize the high-temperature stability and the reliability of low-temp ceramics material, make element have high-temperature stability and high reliability;
(5) utilize the consistency of the production in enormous quantities of LTCC technology, obtain high finished product rate and low cost.In a word; The present invention has that volume is little, in light weight, reliability is high, electrical property is excellent, the electrical property temperature stability is high, the circuit implementation structure is simple, electrical property consistency good; Can install and welding, be specially adapted in the radio communication handheld terminals such as rocket, airborne, missile-borne, spaceship, individual soldier's mobile communication terminal with full-automatic chip mounter, and volume, weight, performance, reliability are had in the harsh corresponding system that requires.
Description of drawings
Fig. 1 is the electrical schematic diagram of the low high restraining band pass filter of Insertion Loss of C-band of the present invention;
Fig. 2 is the profile and the internal structure sketch map of the low high restraining band pass filter of Insertion Loss of C-band of the present invention;
Fig. 3 is the parallel resonance cellular construction sketch map of the low high restraining band pass filter of Insertion Loss of C-band of the present invention;
Fig. 4 is the three-dimensional all-wave simulation performance of the C-band of the present invention high restraining band pass filter of a low Insertion Loss curve.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
In conjunction with Fig. 1, Fig. 2 and Fig. 3; The present invention is the low high restraining band pass filter of Insertion Loss of a kind of C-band, and this filter comprises 50 ohmage input port P1, input inductance Lin, first order parallel resonance unit L4, C4, the first electromagnetic coupled circuit L43, C43, parallel resonance unit, second level L3, C3, the second electromagnetic coupled circuit L32, C32, third level parallel resonance unit L2, C2, the 3rd electromagnetic coupled circuit L21, C21, fourth stage parallel resonance unit L1, C1, the 4th electromagnetic coupled circuit L41, C41, the outputting inductance Lout of mounted on surface, 50 ohmage output port P2 and earth terminals of mounted on surface; 50 ohmage input port P1, the one termination input signal of mounted on surface; The end of another termination input inductance Lin; The other end of input inductance Lin is connected with the public connecting end of first order parallel resonance unit L4, C4, the first electromagnetic coupled circuit L43, C43, the 4th electromagnetic coupled circuit L41, C41; Wherein first order parallel resonance unit L4, C4 are formed in parallel by first inductance L 4 and first capacitor C 4; The first electromagnetic coupled circuit L43, C43 are in series by the first electromagnetic coupled inductance L 43 and the first electromagnetic coupled capacitor C 43, and the 4th electromagnetic coupled circuit L41, C41 are in series by the 4th electromagnetic coupled inductance L 41 and the 4th electromagnetic coupled capacitor C 41; The other end of the first electromagnetic coupled circuit L43, C43 is connected with the common port of parallel resonance unit, second level L3, C3, the second electromagnetic coupled circuit L32, C32; Parallel resonance unit, second level L3, C3 are formed in parallel by second inductance L 3 and second capacitor C 3, and the second electromagnetic coupled circuit L32, C32 are in series by the second coupling inductance L32 and the second coupling capacitance C32; The other end of the second electromagnetic coupled circuit L32, C32 is connected with the common port of third level parallel resonance unit L2, C2, the 3rd electromagnetic coupled circuit L21, C21; Third level parallel resonance unit L2, C2 are formed in parallel by the 3rd inductance L 2 and the 3rd capacitor C 2, and the 3rd electromagnetic coupled circuit L21, C21 are in series by the 3rd coupling inductance L21 and the 3rd coupling capacitance C21; The other end of the 3rd electromagnetic coupled circuit L21, C21 is connected with the common port of fourth stage parallel resonance unit L1, C1, the 4th electromagnetic coupled circuit L41, C41, outputting inductance Lout, and fourth stage parallel resonance unit L1, C1 are formed in parallel by the 4th inductance L 1 and the 4th capacitor C 1; The other end of outputting inductance Lout is connected with the end of output port P2, another termination output signal of output port P2; The other end of first order parallel resonance unit L4, C4, parallel resonance unit, second level L3, C3, third level parallel resonance unit L2, C2 and fourth stage parallel resonance unit L1, C1 is ground connection respectively.
In conjunction with Fig. 2 and Fig. 3; C-band of the present invention hangs down the high restraining band pass filter of Insertion Loss; Input port P1, input inductance Lin, first order parallel resonance unit L4, C4, the first electromagnetic coupled circuit L43, C43, parallel resonance unit, second level L3, C3, second electromagnetism idol circuit L32, C32, third level parallel resonance unit L2, C2, the 3rd electromagnetic coupled circuit L21, C21, fourth stage parallel resonance unit L1, C1, the 4th electromagnetic coupled circuit L41, C41, outputting inductance Lout, output port P2 and earth terminal all adopt multilayer LTCC technology to realize; Wherein input inductance Lin, outputting inductance Lout all adopt the strip line of distributed constant to realize; First order parallel resonance unit L4, C4, parallel resonance unit, second level L3, C3, third level parallel resonance unit L2, C2, fourth stage parallel resonance unit L1, C1 all adopt three layers of folding coupling strip line to realize; The first electromagnetic coupled capacitor C 43, the second electromagnetic coupled capacitor C 32, the 3rd electromagnetic coupled capacitor C 21, the 4th minimum capacity C41 adopt between first order parallel resonance unit L4, C4 and parallel resonance unit, second level L3, the C3 respectively, space coupling and distributed constant electric capacity are realized between parallel resonance unit, second level L3, C3 and third level parallel resonance unit L2, the C2, between third level parallel resonance unit L2, C2 and fourth stage parallel resonance unit L1, the C1, between first order L4, C4 and fourth stage parallel resonance unit L1, C1 and the zigzag cross-couplings strip line, and the first coupling inductance L43, the second coupling inductance L32, the 3rd coupling inductance L21, the 4th coupling inductance L41 adopt between first order parallel resonance unit L4, C4 and parallel resonance unit, second level L3, the C3 respectively, between parallel resonance unit, second level L3, C3 and third level parallel resonance unit L2, the C2, between third level parallel resonance unit L2, C2 and fourth stage parallel resonance unit L1, the C1, the space is coupled and the realization of distributed constant inductance between first order L4, C4 and fourth stage parallel resonance unit L1, C1 and the zigzag cross-couplings strip line.
In conjunction with Fig. 2, Fig. 3; C-band of the present invention hangs down the high restraining band pass filter of Insertion Loss; First order parallel resonance unit L4, C4, parallel resonance unit, second level L3, C3, third level parallel resonance unit L2, C2 and fourth stage parallel resonance unit L1, C1 adopt three layers of folding coupling strip line structure of distributed constant to realize; Wherein every layer of strip line one end is unsettled, other end ground connection.
C-band of the present invention hangs down the high restraining band pass filter of Insertion Loss; Among the first electromagnetic coupled circuit L43, the C43; The first coupling inductance L43 adopts space coupling and the realization of distributed constant inductance between first order parallel resonance unit L4, C4 and parallel resonance unit, second level L3, the C3, and space coupling and distributed constant electric capacity are realized between first coupling capacitance C43 employing first order parallel resonance unit L4, C4 and parallel resonance unit, second level L3, the C3; Among the second electromagnetic coupled circuit L32, the C32; The second coupling inductance L32 adopts space coupling and the realization of distributed constant inductance between parallel resonance unit, second level L3, C3 and third level parallel resonance unit L2, the C2, and space coupling and distributed constant electric capacity are realized between second coupling capacitance C32 employing parallel resonance unit, second level L3, C3 and third level parallel resonance unit L2, the C2; Among the 3rd electromagnetic coupled circuit L21, the C21; The 3rd coupling inductance L21 adopts space coupling and the realization of distributed constant inductance between third level parallel resonance unit L2, C2 and fourth stage parallel resonance unit L1, the C1, and space coupling and distributed constant electric capacity are realized between the 3rd coupling capacitance C21 employing third level parallel resonance unit L2, C2 and fourth stage parallel resonance unit L1, the C1; Among the 4th electromagnetic coupled circuit L41, the C41; The 4th coupling inductance L41 adopts space coupling and the realization of distributed constant inductance between first order parallel resonance unit L4, C4 and fourth stage parallel resonance unit L1, C1 and the zigzag cross-couplings strip line, and space coupling and distributed constant electric capacity are realized between the 4th coupling capacitance C41 employing one-level parallel resonance unit L4, C4 and fourth stage parallel resonance unit L1, C1 and the zigzag cross-couplings strip line.
C-band of the present invention hangs down the high restraining band pass filter of Insertion Loss; Its operation principle is summarized as follows: the broadband microwave signal of input arrives first order parallel resonance unit L4, C4 through input port P1 through input inductance Lin; The end of the end that first inductance L 4 is connected with first capacitor C 4 and the first electromagnetic coupled circuit L43, C43; End at first order parallel resonance unit L4, C4; In the described broadband microwave signal; Get into the first electromagnetic coupled circuit L43, C43 between first order parallel resonance unit L4, C4 and parallel resonance unit, second level L3, the C3 near the microwave signal the first order parallel resonance unit resonance frequency; Near all the other non-first order parallel resonance unit resonance frequencies microwave signal realizes first order filtering through first inductance L 4 and first capacitor C, 4 ground connection among first order parallel resonance unit L4, the C4.Near the parallel resonance frequency of the first electromagnetic coupled circuit L43, C43 stopband microwave signal; It is near the microwave signal first zero frequency; Be suppressed because of presenting high impedance, near the microwave frequency signal non-first coupling is through among the first coupling inductance L43 among the first electromagnetic coupled circuit L43, the C43 and first zero capacitor C 43 arrival second level parallel resonance unit L3, the C3.The end of the second electromagnetic coupled circuit L32, C32 between the end that second inductance L 3 and second capacitor C 3 are connected and parallel resonance unit, second level L3, C3 and third level parallel resonance unit L2, the C2; The microwave signal of the process first order filtering and the first electromagnetic coupled circuit L43, C43; Near parallel resonance unit, second level L3, C3 resonance frequency microwave signal gets into the second electromagnetic coupled circuit L32, C32; Near all the other non-second level parallel resonance unit resonance frequencies microwave signal realizes second level filtering through second inductance L 3 and second capacitor C, 3 ground connection among parallel resonance unit, second level L3, the C3.Near the parallel resonance frequency of the second electromagnetic coupled circuit L32, C32 stopband microwave signal; Near i.e. microwave signal second coupling frequency; Be suppressed because of presenting high impedance; Near non-second coupling microwave frequency signal arrives the end of a end that the 3rd inductance L 2 among third level parallel resonance unit L2, the C2 is connected with the 3rd capacitor C 2 and the 3rd electromagnetic coupled circuit L21, C21 through the second coupling inductance L32 among the second electromagnetic coupled circuit L32, the C32 and the second coupling capacitance C32; Through the first order, second level filtering and the first electromagnetic coupled circuit L43, C43; The microwave signal of the second electromagnetic coupled circuit L32, C32; Get into the 3rd electromagnetic coupled circuit L21, C21 between third level parallel resonance unit L2, C2 and fourth stage parallel resonance unit L1, the C1 near the microwave signal the 3rd parallel resonance unit L2, the C2 resonance frequency; Near all the other non-the 3rd parallel resonance unit L21, the C21 resonance frequency microwave signal realizes third level filtering through the 3rd inductance L 2 and the 3rd capacitor C 2 ground connection among third level parallel resonance unit L2, the C2.Near the parallel resonance frequency of the 3rd electromagnetic coupled circuit L21, C21 stopband microwave signal; Near i.e. microwave signal the 3rd coupling frequency; Be suppressed because of presenting high impedance; Near non-the 3rd coupling microwave frequency signal arrives the end of the 4th electromagnetic coupled circuit L41, C41 between the 4th inductance L 1 and the 4th capacitor C 1 are connected among fourth stage parallel resonance unit L1, the C1 a end and the first parallel resonance unit L4, C4 and fourth stage parallel resonance unit L1, C1 and the zigzag cross-couplings strip line through the 3rd coupling inductance L21 among the 3rd electromagnetic coupled circuit L21, the C21 and the 3rd coupling capacitance C21; Through the microwave signal of the first order, the second level, third level filtering and first, second, third electromagnetic coupled circuit, near the microwave signal fourth stage parallel resonance unit L1, C1 resonance frequency gets into the 4th electromagnetic coupled circuit L41, C41.Near the parallel resonance frequency of the 4th electromagnetic coupled circuit L41, C41 stopband microwave signal; Near i.e. microwave signal the 4th coupling frequency; Be suppressed because of presenting high impedance; Near near the 4th parallel resonance unit L1, the C1 resonance frequency microwave signal and non-the 4th coupling microwave frequency letter wants to add an end that meets surface-pasted 50 ohmage output port P2 afterwards through outputting inductance Lout; Near all the other non-the 4th parallel resonance unit resonance frequencies microwave signal realizes fourth stage filtering through the 4th inductance L 1 and the 4th capacitor C 1 ground connection among fourth stage parallel resonance unit L1, the C1.Through first order filtering, second level filtering, third level filtering, fourth stage filtering; The first electromagnetic coupled circuit L43, C43; The second electromagnetic coupled circuit L32, C32, the 3rd electromagnetic coupled circuit L21, C21, the microwave signal of the 4th electromagnetic coupled circuit L41, C41; Through the other end output of surface-pasted 50 ohmage output port P2, thereby realize the low high restraining bandpass filtering of the Insertion Loss function of C-band.
The low high restraining band pass filter of Insertion Loss of C-band is owing to be to adopt multilayer LTCC technology to realize; Its low-temperature co-burning ceramic material and metallic pattern form at about 900 ℃ of sintering temperatures; So have extreme high reliability and temperature stability; 3 D stereo is integrated to be grounded and to encapsulate with multilayer folding structure and outer surface metallic shield because structure adopts, thereby volume is significantly reduced.
It is 2.5mm * 3.2mm * 1.5mm that the high restraining band pass filter of the low Insertion Loss of C-band is implemented volume.This filter bandwidht is 500MHz, and the logical in-band insertion loss of simulation filter device is all less than 3 decibels, and low stopband suppresses to be superior to-50 decibels, and high stopband suppresses to be superior to-40 decibels, has good filtering performance.
Claims (4)
1. the low high restraining band pass filter of Insertion Loss of
a kind of C-band is characterized in that: the first order parallel resonance unit (L4, C4) that comprises surface-pasted 50 ohmage input ports (P1), input inductance (Lin), is formed in parallel by first inductance (L4) and first electric capacity (C4), the first electromagnetic coupled circuit (L43, C43) that is in series by first coupling inductance (L43) and first coupling capacitance (C43), the parallel resonance unit, the second level (L3, C3) that is formed in parallel by second inductance (L3) and second electric capacity (C3), the second electromagnetic coupled circuit (L32, C32) that is in series by second coupling inductance (L32) and second coupling capacitance (C32), the third level parallel resonance unit (L2, C2) that is formed in parallel by the 3rd inductance (L2) and the 3rd electric capacity (C2), the 3rd electromagnetic coupled circuit (L21, C21) that is in series by the 3rd coupling inductance (L21) and the 3rd coupling capacitance (C21), the fourth stage parallel resonance unit (L1, C1) that is formed in parallel by the 4th inductance (L1) and the 4th electric capacity (C1), the 4th electromagnetic coupled circuit (L41, C41), outputting inductance (Lout), surface-pasted 50 ohmage output port (P2) and the earth terminals that are in series by the 4th coupling inductance (L41) and the 4th coupling capacitance (C41); Input port (P1) is connected with input inductance (Lin); Output port (P2) is connected with outputting inductance (Lout); Parallelly connected first order parallel resonance unit (L4, C4), parallel resonance unit, the second level (L3, C3), third level parallel resonance unit (L2, C2) and fourth stage parallel resonance unit (L1, C1) between this outputting inductance (Lout) and the input inductance (Lin), the first electromagnetic coupled circuit (L43, C43) of between first order parallel resonance unit (L4, C4) and parallel resonance unit, the second level (L3, C3), connecting; The second electromagnetic coupled circuit (L32, C32) of connecting between parallel resonance unit, the second level (L3, C3) and third level parallel resonance unit (L2, the C2); The 3rd electromagnetic coupled circuit (L21, C21) of connecting between third level parallel resonance unit (L2, C2) and fourth stage parallel resonance unit (L1, the C1); The 4th electromagnetic coupled circuit (L41, C41) of connecting between first order parallel resonance unit (L4, C4) and fourth stage parallel resonance unit (L1, the C1); The other end of described first order parallel resonance unit (L4, C4), parallel resonance unit, the second level (L3, C3), third level parallel resonance unit (L2, C2) and fourth stage parallel resonance unit (L1, C1) is ground connection respectively.
2. C-band according to claim 1 hangs down the high restraining band pass filter of Insertion Loss; It is characterized in that: 50 ohmage output ports (P2) of first order parallel resonance unit (L4, C4), the first electromagnetic coupled circuit (L43, C43), parallel resonance unit, the second level (L3, C3), the second electromagnetic coupled circuit (L32, C32), third level parallel resonance unit (L2, C2), the 3rd electromagnetic coupled circuit (L21, C21), fourth stage parallel resonance unit (L1, C1), the 4th electromagnetic coupled circuit (L41, C41), outputting inductance (Lout), mounted on surface and earth terminal all adopt multilayer LTCC technology to realize; Wherein input inductance (Lin), outputting inductance (Lout) all adopt the strip line of distributed constant to realize; First order parallel resonance unit (L4; C4), second level parallel resonance unit (L3; C3), third level parallel resonance unit (L2, C2), (L1 C1) all adopts three layers of folding coupling strip line to realize in fourth stage parallel resonance unit; First coupling capacitance (C41), second coupling capacitance (C32), the 3rd coupling capacitance (C21), the 4th coupling capacitance (C41) adopt first order parallel resonance unit (L4 respectively; C4) with parallel resonance unit, the second level (L3, C3) between, parallel resonance unit, the second level (L3, C3) with third level parallel resonance unit (L2; C2) between, third level parallel resonance unit (L2; C2) with fourth stage parallel resonance unit (L1, C1) between, first order parallel resonance unit (L4, C4) with fourth stage parallel resonance unit (L1; C1) space coupling and distributed constant electric capacity are realized between; First coupling inductance (L43), second coupling inductance (L32), the 3rd coupling inductance (L21), the 4th coupling inductance (L41) adopt respectively first order parallel resonance unit (L4, C4) with parallel resonance unit, the second level (L3, C3) between, parallel resonance unit, the second level (L3; C3) with third level parallel resonance unit (L2; C2) between, third level parallel resonance unit (L2, C2) with fourth stage parallel resonance unit (L1, C1) between, first order parallel resonance unit (L4; C4) with fourth stage parallel resonance unit (L1, C1) between space coupling and the realization of distributed constant inductance.
3. according to the low high restraining band pass filter of Insertion Loss of the desired C-band of claim 1; It is characterized in that: first order parallel resonance unit (L4, C4), parallel resonance unit, the second level (L3, C3), third level parallel resonance unit (L2; C2), fourth stage parallel resonance unit (L1; C1) adopt three layers of folding coupling strip line structure of distributed constant to realize that wherein every layer of strip line one end is unsettled, other end ground connection.
4. according to the low high restraining band pass filter of Insertion Loss of the desired C-band of claim 1; It is characterized in that: the first electromagnetic coupled circuit (L43 wherein; C43) in, first coupling inductance (L43) adopts first order parallel resonance unit, and (L4 is C4) with parallel resonance unit, the second level (L3; C3) space coupling and distributed constant inductance are realized between; First coupling capacitance (C43) adopt first order parallel resonance unit (L4, C4) with parallel resonance unit, the second level (L3, C3) between space coupling and the realization of distributed constant electric capacity; The second electromagnetic coupled circuit (L32; C32) in, second coupling inductance (L32) adopts parallel resonance unit, the second level, and (L3 is C3) with third level parallel resonance unit (L2; C2) space coupling and distributed constant inductance are realized between; Second coupling capacitance (C32) adopt parallel resonance unit, the second level (L3, C3) with third level parallel resonance unit (L2, C2) between space coupling and the realization of distributed constant electric capacity; The 3rd electromagnetic coupled circuit (L21; C21) in, the 3rd coupling inductance (L21) adopts third level parallel resonance unit, and (L2 is C2) with fourth stage parallel resonance unit (L1; C1) space coupling and distributed constant inductance are realized between; The 3rd coupling capacitance (C21) adopt third level parallel resonance unit (L2, C2) with fourth stage parallel resonance unit (L1, C1) between space coupling and the realization of distributed constant electric capacity; The 4th electromagnetic coupled circuit (L41; C41) in, the 4th coupling inductance (L41) adopts first order parallel resonance unit, and (L4 is C4) with fourth stage parallel resonance unit (L1; C1) space coupling and the realization of distributed constant inductance and between the zigzag cross-couplings strip line; The 4th coupling capacitance (C41) adopts one-level parallel resonance unit, and (L4, C4) (L1 is C1) with space coupling between the zigzag cross-couplings strip line and the realization of distributed constant electric capacity with fourth stage parallel resonance unit.
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| CN103117428A (en) * | 2013-02-05 | 2013-05-22 | 江苏奕扬电子科技股份有限公司 | Miniature band-pass filter of 60G millimeter waves |
| CN103985932A (en) * | 2014-05-30 | 2014-08-13 | 南京理工大学 | Miniature band-pass filter of novel structure |
| CN104410380A (en) * | 2014-11-20 | 2015-03-11 | 南京波而特电子科技有限公司 | Three-dimensional integrated subminiature band-pass filter |
| CN105024123A (en) * | 2015-08-07 | 2015-11-04 | 南京理工大学 | High-performance filter bank based on LTCC lumped and semi-lumped structure |
| CN117497989A (en) * | 2024-01-03 | 2024-02-02 | 南京迈矽科微电子科技有限公司 | Power distributor and electronic equipment |
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| CN102006026A (en) * | 2010-11-24 | 2011-04-06 | 南京理工大学 | Ku-wave band and ultra-narrow band micro band-pass filter with low loss and high inhibition |
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| US20060043580A1 (en) * | 2004-09-02 | 2006-03-02 | Darfon Electronics Corp. | Bandpass filter within a multilayerd low temperature co-fired ceramic substrate |
| CN101621145A (en) * | 2009-08-11 | 2010-01-06 | 南京理工大学 | L wave band miniature band pass filter with low loss and high suppression |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103117428A (en) * | 2013-02-05 | 2013-05-22 | 江苏奕扬电子科技股份有限公司 | Miniature band-pass filter of 60G millimeter waves |
| CN103985932A (en) * | 2014-05-30 | 2014-08-13 | 南京理工大学 | Miniature band-pass filter of novel structure |
| CN104410380A (en) * | 2014-11-20 | 2015-03-11 | 南京波而特电子科技有限公司 | Three-dimensional integrated subminiature band-pass filter |
| CN105024123A (en) * | 2015-08-07 | 2015-11-04 | 南京理工大学 | High-performance filter bank based on LTCC lumped and semi-lumped structure |
| CN117497989A (en) * | 2024-01-03 | 2024-02-02 | 南京迈矽科微电子科技有限公司 | Power distributor and electronic equipment |
| CN117497989B (en) * | 2024-01-03 | 2024-03-08 | 南京迈矽科微电子科技有限公司 | Power distributor and electronic equipment |
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Application publication date: 20120919 |