CN102509825A - Low-loss high-suppression minitype cavity body band-pass filter - Google Patents
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Abstract
The invention relates to a low-loss high-suppression minitype cavity body band-pass filter which comprises 50 ohmic impedance input/output interfaces suitable for surface mounting, five parallel resonant units and input and output inductors, wherein the five parallel resonant units are realized by adopting a distributed parameter cylindrical cavity body coupling structure; and the 50 ohmic impedance input/output interfaces, the five parallel resonant units as well as the input and output inductors are realized by adopting a multilayer low-temperature co-fired ceramic technology. The low-loss high-suppression minitype cavity body band-pass filter provided by the invention has the advantages of good band-pass selectivity, good out-of-band suppression, lower insertion loss, small volume, light weight, high reliability, good electric property, good phase frequency characteristic linearity, good temperature stability, good electric property batch consistency, low cost, volume production and the like, and is especially suitable for wireless communication hand-held and portable terminal products of radars, correspondence, rocket carrying, aircraft carrying, missile carrying, spacecrafts, individual soldier mobile communication terminals and the like, as well as places and corresponding frequency band systems which have rigor requirements in volume, weight, electric property, reliability and the like.
Description
Technical field
The present invention relates to a kind of filter, the high restraining cavity band-pass filter of particularly a kind of low-loss.
Background technology
Development along with systems such as microwave and millimeter wave communication, radars; Especially the continuous miniaturization of microwave and millimeter wave communication module in ambulatory handheld formula wireless communication terminal, individual soldier's satellite mobile communication terminal, military and civilian multimode multiplex communication terminal, airborne, missile-borne, the aerospace communication system; Band pass filter is as the crucial electronic unit in corresponding wave band reception and the transmitting branch, and low-loss and high stopband restraining cavity microwave band-pass filter are one of which important developing direction.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.With the filter of conventional method design, all there is volume and inserts the bigger shortcoming of loss like hair clip type filter construction, resonant cavity filter structure and coaxial line filter structure etc., for requiring harsh application scenario often can't use.
Summary of the invention
The object of the present invention is to provide that a kind of volume is little, in light weight, reliability is high, electrical property is excellent, simple in structure, rate of finished products is high, in batches high conformity, cost is low, temperature performance is stable, the high restraining cavity of the low-loss of phase-frequency characteristic linear change microwave band-pass filter.
The technical scheme that realizes the object of the invention is: the high restraining cavity band-pass filter of a kind of low-loss comprises surface-pasted 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, level V parallel resonance unit, outputting inductance, surface-pasted 50 ohmage output port and earth terminals; First order parallel resonance unit is formed in parallel by first inductance and first electric capacity; Parallel resonance unit, the second level is formed in parallel by second inductance and second electric capacity; Third level parallel resonance unit is formed in parallel by the 3rd inductance and the 3rd electric capacity; Fourth stage parallel resonance unit is formed in parallel by the 4th inductance and the 4th electric capacity, and level V parallel resonance unit is formed in parallel by the 5th inductance and the 5th electric capacity; 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, fourth stage parallel resonance unit and level V 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 and level V parallel resonance unit between series connection the 4th electromagnetic coupled circuit, the other end of the other end of the other end of described first order parallel resonance unit, the other end of parallel resonance unit, the second level, third level parallel resonance unit, the other end of fourth stage parallel resonance unit and level V parallel resonance unit is ground connection respectively.
The present invention compared with prior art; Because the present invention adopts the low-loss low-temperature co-burning ceramic material and 3 D stereo is integrated and circular cylindrical cavity is realized parallel resonance unit and electromagnetic coupled circuit, the remarkable advantage that is brought is: (1) passband internal loss is low, band is outer suppresses high; (2) the Q value is high; (3) volume is little, in light weight, reliability is high; (4) electrical property is excellent, the phase-frequency characteristic linear change; (5) the electrical property temperature stability is high; (6) the circuit implementation structure is simple; (7) electrical property consistency is good, can realize producing in enormous quantities; (8) cost is low; (9) easy to install and use, can use full-automatic chip mounter to install and welding; (10) be specially adapted in the radio communication handheld terminals such as rocket, airborne, missile-borne, spaceship, individual soldier's mobile communication terminal, and volume, weight, performance, reliability are had in the harsh communication system that requires.
Description of drawings
Fig. 1 is the electrical schematic diagram of the high restraining cavity band-pass filter of low-loss of the present invention.
Fig. 2 is the profile and the internal structure sketch map of the high restraining cavity band-pass filter of low-loss of the present invention.
Fig. 3 is the high restraining cavity band-pass filter of a low-loss of the present invention main performance simulation result curve.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
In conjunction with Fig. 1, the present invention is the high restraining cavity band-pass filter of a kind of low-loss, comprises 50 ohmage input port P1, the input inductance Lin of surface mount dress; First order parallel resonance unit L1, C1, the first electromagnetic coupled circuit L12, C12, parallel resonance unit, second level L2, C2; The second electromagnetic coupled circuit L23, C23, third level parallel resonance unit L3, C3, the 3rd electromagnetic coupled circuit L34, C34; Fourth stage parallel resonance unit L4, C4, the 4th electromagnetic coupled circuit L45, C45, level V parallel resonance unit L5, C5; Outputting inductance Lout, 50 ohmage output port P2 and earth terminals of mounted on surface; First order parallel resonance unit L1, C1 are formed in parallel by first inductance L 1 and first capacitor C 1; Parallel resonance unit, second level L2, C2 are formed in parallel by second inductance L 2 and second capacitor C 2; Third level parallel resonance unit L3, C3 are formed in parallel by the 3rd inductance L 3 and the 3rd capacitor C 3; Fourth stage parallel resonance unit L4, C4 are formed in parallel by the 4th inductance L 4 and the 4th capacitor C 4, and level V parallel resonance unit L5, C5 are formed in parallel by the 5th inductance L 5 and the 5th capacitor C 5; 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 L1, C1 between this outputting inductance Lout and the input inductance Lin; Parallel resonance unit, second level L2, C2; Third level parallel resonance unit L3, C3, fourth stage parallel resonance unit L4, C4 and level V parallel resonance unit L5, C5, the first electromagnetic coupled circuit L12, C12 connect between first order parallel resonance unit L1, C1 and parallel resonance unit, second level L2, C2; The second electromagnetic coupled circuit L23, C23 connect between parallel resonance unit, second level L2, C2 and third level parallel resonance unit L3, the C3; The 3rd electromagnetic coupled circuit L34, C34 connect between third level parallel resonance unit L3, C3 and fourth stage parallel resonance unit L4, the C4; The 4th electromagnetic coupled circuit L45, C45 connect between fourth stage parallel resonance unit L4, C4 and level V parallel resonance unit L5, the C5; The other end of described first order parallel resonance unit L1, C1; The other end of parallel resonance unit, second level L2, C2; The other end of third level parallel resonance unit L3, C3, the other end of the other end of fourth stage parallel resonance unit L4, C4 and level V parallel resonance unit L5, C5 is ground connection respectively.
In conjunction with Fig. 2; The high restraining cavity band-pass filter of low-loss of the present invention; 50 ohmage input port P1 of mounted on surface; Input inductance Lin; First order parallel resonance unit L1, C1, the first electromagnetic coupled circuit L12, C12, parallel resonance unit, second level L2, C2; The second electromagnetic coupled circuit L23, C23; Third level parallel resonance unit L3, C3, the 3rd electromagnetic coupled circuit L34, C34, fourth stage parallel resonance unit L4, C4; The 4th electromagnetic coupled circuit L45, C45; Level V parallel resonance unit L5, C5,50 ohmage output port P2 of 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; The inductance L 5 of the inductance L 4 of the inductance L 3 of the inductance L 2 of the inductance L 1 of first order parallel resonance unit L1, C1, parallel resonance unit, second level L2, C2, third level parallel resonance unit L3, C3, fourth stage parallel resonance unit L4, C4, level V parallel resonance unit L5, C5 all adopts distributed constant cylindrical cavity body structure to realize, the capacitor C 5 of the capacitor C 4 of the capacitor C 3 of the capacitor C 2 of the capacitor C 1 of first order parallel resonance unit L1, C1, parallel resonance unit, second level L2, C2, third level parallel resonance unit L3, C3, fourth stage parallel resonance unit L4, C4, level V parallel resonance unit L5, C5 all adopts media plate electric capacity to realize; The first coupling inductance L12 adopts space coupling and the realization of distributed constant inductance between the first parallel resonance unit L1, C1 and the second parallel resonance unit L2, the C2, and the first coupling capacitance C12 adopts space coupling and the realization of distributed constant electric capacity between the first parallel resonance unit L1, C1 and the second parallel resonance unit L2, the C2; The second coupling inductance L23 adopts space coupling and the realization of distributed constant inductance between the second parallel resonance unit L2, C2 and the 3rd parallel resonance unit L3, the C3, and the second coupling capacitance C23 adopts space coupling and the realization of distributed constant electric capacity between the second parallel resonance unit L2, C2 and the 3rd parallel resonance unit L3, the C3; The 3rd coupling inductance L34 adopts space coupling and the realization of distributed constant inductance between the 3rd parallel resonance unit L3, C3 and the 4th parallel resonance unit L4, the C4, and the 3rd coupling capacitance C34 adopts space coupling and the realization of distributed constant electric capacity between the 3rd parallel resonance unit L3, C3 and the 4th parallel resonance unit L4, the C4; The 4th coupling inductance L45 adopts between the 4th parallel resonance unit L4, C4 and the 5th parallel resonance unit L5, the C5 space coupling and distributed constant inductance to realize, the 4th coupling capacitance C45 adopts that space coupling and distributed constant inductance realize between space coupling and distributed constant electric capacity realize between the 4th parallel resonance unit L4, C4 and the 5th parallel resonance unit L5, the C5.
The high restraining cavity band-pass filter of low-loss of the present invention, first order parallel resonance unit L1, C1, parallel resonance unit, second level L2, C2; Third level parallel resonance unit L3, C3; Fourth stage parallel resonance unit L4, C4, level V parallel resonance unit L5, C5 all adopt distributed constant circular cylindrical cavity coupled structure to realize, wherein an end of the inductance L 1 of first order parallel resonance unit L1, C1; One end of the inductance L 2 of parallel resonance unit, second level L2, C2; One end of the inductance (L3) of third level parallel resonance unit L3, C3, an end of the inductance L 4 of fourth stage parallel resonance unit L4, C4, an end of the inductance L 5 of level V parallel resonance unit L5, C5 is ground connection respectively; The other end respectively with an end of the capacitor C 1 of corresponding first order parallel resonance unit L1, C1; One end of the capacitor C 2 of parallel resonance unit, second level L2, C2, an end of the capacitor C 3 of third level parallel resonance unit L3, C3, an end of the capacitor C 4 of fourth stage parallel resonance unit L4, C4 links to each other; One end of the capacitor C 5 of level V parallel resonance unit L5, C5 links to each other; The other end of the capacitor C 1 of first order parallel resonance unit L1, C1, the other end of the capacitor C 2 of parallel resonance unit, second level L2, C2, the other end of the capacitor C 3 of third level parallel resonance unit L3, C3; The other end of the capacitor C 4 of fourth stage parallel resonance unit L4, C4, the other end of the capacitor C 5 of level V parallel resonance unit L5, C5 is ground connection respectively.
The high restraining cavity band-pass filter of low-loss of the present invention; Its operation principle is summarized as follows: the end that the broadband microwave signal of input links to each other with the first electromagnetic coupled circuit L12, C12 through input inductance Lin arrival first order parallel resonance unit L1, C1 through input port P1; Near the first parallel resonance unit L1, C1 resonance frequency microwave signal gets into the first electromagnetic coupled circuit L12, C12; Near all the other non-first parallel resonance unit L1, the C1 resonance frequency microwave signal realizes first order filtering through first inductance L 1 and first capacitor C, 1 ground connection among first order parallel resonance unit L1, the C1.Near the parallel resonance frequency of the first electromagnetic coupled circuit L12, C12 stopband microwave signal; It is near the microwave signal first zero frequency; Be suppressed because of presenting high impedance; Near the non-first zero microwave frequency signal arrives the end of the second electromagnetic coupled circuit L23, C23 between a end that second inductance L 2 and second capacitor C 2 among parallel resonance unit, second level L2, the C2 be connected and parallel resonance unit, second level L2, C2 and third level parallel resonance unit L3, the C3 through the first coupling inductance L12 among the first electromagnetic coupled circuit L12, the C12 and the first coupling capacitance C12; The microwave signal of the process first order filtering and the first electromagnetic coupled circuit L12, C12; Near the second parallel resonance unit L2, C2 resonance frequency microwave signal gets into the second electromagnetic coupled circuit L23, C23; Near all the other non-second parallel resonance unit resonance frequencies microwave signal realizes second level filtering through second inductance L 2 and second capacitor C, 2 ground connection among parallel resonance unit, second level L2, the C2.Near the parallel resonance frequency of the second electromagnetic coupled circuit L23, C23 stopband microwave signal; Near i.e. microwave signal second zero frequency; Be suppressed because of presenting high impedance; Near non-second zero point microwave frequency signal arrives the end of the 3rd electromagnetic coupled circuit L34, C34 between a end that the 3rd inductance L 3 and the 3rd capacitor C 3 among third level parallel resonance unit L3, the C3 be connected and third level parallel resonance unit L3, C3 and fourth stage parallel resonance unit L4, the C4 through the second coupling inductance L23 among the second electromagnetic coupled circuit L23, the C23 and the second coupling capacitance C23; Through the first order, second level filtering and the first electromagnetic coupled circuit L12, C12; The microwave signal of the second electromagnetic coupled circuit L23, C23; Near the 3rd parallel resonance unit L3, C3 resonance frequency microwave signal gets into the 3rd electromagnetic coupled circuit L34, C34; Near all the other non-the 3rd parallel resonance unit L34, the C34 resonance frequency microwave signal realizes third level filtering through the 3rd inductance L 3 and the 3rd capacitor C 3 ground connection among third level parallel resonance unit L3, the C3.Near the parallel resonance frequency of the 3rd electromagnetic coupled circuit L34, C34 stopband microwave signal; Near i.e. microwave signal the 3rd zero frequency; Be suppressed because of presenting high impedance; Near non-the 3rd zero point microwave frequency signal arrives the end of the 4th electromagnetic coupled circuit L45, C45 between the 4th inductance L 4 and the 4th capacitor C 4 are connected among fourth stage parallel resonance unit L4, the C4 a end and fourth stage parallel resonance unit L4, C4 and level V parallel resonance unit L5, the C5 through the 3rd coupling inductance L34 among the 3rd electromagnetic coupled circuit L34, the C34 and the 3rd coupling capacitance C34; Microwave signal through the first order, the second level, third level filtering and first, second, third electromagnetic coupled circuit; Near the 4th parallel resonance unit L4, C4 resonance frequency microwave signal gets into the 4th electromagnetic coupled circuit L45, C45; Near all the other non-the 4th parallel resonance unit L45, the C45 resonance frequency microwave signal realizes fourth stage filtering through the 4th inductance L 4 and the 4th capacitor C 4 ground connection among fourth stage parallel resonance unit L4, the C4.Near the parallel resonance frequency of the 4th electromagnetic coupled circuit L45, C45 stopband microwave signal; Near i.e. microwave signal the 4th zero frequency; Be suppressed because of presenting high impedance; Near non-the 4th zero point microwave frequency signal arrives the 5th inductance L 5 is connected with the 5th capacitor C 5 among level V parallel resonance unit L5, the C5 a end and the end of outputting inductance Lout through the 4th coupling inductance L45 among the 4th electromagnetic coupled circuit L45, the C45 and the 4th coupling capacitance C45; Microwave signal through the first order, the second level, the third level, fourth stage filtering and first, second, third, fourth electromagnetic coupled circuit; Near the 5th parallel resonance unit L5, the C5 resonance frequency microwave signal and near the microwave frequency letter non-the 5th zero point want to add an end that meets surface-pasted 50 ohmage output port P2 afterwards through outputting inductance Lout; Near all the other non-no parallel resonance unit resonance frequencies microwave signal realizes level V filtering through the 5th inductance L 5 and the 5th capacitor C 5 ground connection among stepless parallel resonance unit L5, the C5.Through first order filtering, second level filtering, third level filtering, fourth stage filtering, level V filtering; The first electromagnetic coupled circuit L12, C12; The second electromagnetic coupled circuit L23, C23, the 3rd electromagnetic coupled circuit L34, C34, the microwave signal of the 4th electromagnetic coupled circuit L45, C45; Through the other end output of surface-pasted 50 ohmage output port P2, thereby realize the high restraining cavity of low-loss bandpass filtering function.
The high restraining cavity band-pass filter of low-loss 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 5.2mm * 2mm * 1.6mm that the high restraining cavity band-pass filter of low-loss is implemented volume.This filter bandwidht is 230MHz, 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-40 decibels, and high stopband suppresses to be superior to-60 decibels, has good performance of filter.
Claims (3)
1. high restraining cavity band-pass filter of low-loss is characterized in that: the first order parallel resonance unit (L1, C1) that comprises surface-pasted 50 ohmage input ports (P1), input inductance (Lin), is formed in parallel by first inductance (L1) and first electric capacity (C1), the first electromagnetic coupled circuit (L12, C12) that is in series by first coupling inductance (L12) and first coupling capacitance (C12), the parallel resonance unit, the second level (L2, C2) that is formed in parallel by second inductance (L2) and second electric capacity (C2), the second electromagnetic coupled circuit (L23, C23) that is in series by second coupling inductance (L23) and second coupling capacitance (C23), the third level parallel resonance unit (L3, C3) that is formed in parallel by the 3rd inductance (L3) and the 3rd electric capacity (C3), the 3rd electromagnetic coupled circuit (L34, C34) that is in series by the 3rd coupling inductance (L34) and the 3rd coupling capacitance (C34), the fourth stage parallel resonance unit (L4, C4) that is formed in parallel by the 4th inductance (L4) and the 4th electric capacity (C4), the 4th electromagnetic coupled circuit (L45, C45) that is in series by the 4th coupling inductance (L45) and the 4th coupling capacitance (C45), the level V parallel resonance unit (L5, C5), outputting inductance (Lout), surface-pasted 50 ohmage output port (P2) and the earth terminals that are formed in parallel by the 5th inductance (L5) and the 5th electric capacity (C5); 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 (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3, C3), fourth stage parallel resonance unit (L4, C4) and level V parallel resonance unit (L5, C5) between this outputting inductance (Lout) and the input inductance (Lin), the first electromagnetic coupled circuit (L12, C12) of between first order parallel resonance unit (L1, C1) and parallel resonance unit, the second level (L2, C2), connecting; The second electromagnetic coupled circuit (L23, C23) of connecting between parallel resonance unit, the second level (L2, C2) and third level parallel resonance unit (L3, the C3); The 3rd electromagnetic coupled circuit (L34, C34) of connecting between third level parallel resonance unit (L3, C3) and fourth stage parallel resonance unit (L4, the C4); The 4th electromagnetic coupled circuit (L45, C45) of connecting between fourth stage parallel resonance unit (L4, C4) and level V parallel resonance unit (L5, the C5); Described first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3, C3), fourth stage parallel resonance unit (L4, C4) and level V parallel resonance unit (L5, C5) be ground connection respectively.
2. the high restraining cavity band-pass filter of low-loss according to claim 1; It is characterized in that: 50 ohmage output ports (P2) of 50 ohmage input ports (P1) of mounted on surface, input inductance (Lin), first order parallel resonance unit (L1, C1), the first electromagnetic coupled circuit (L12, C12), parallel resonance unit, the second level (L2, C2), the second electromagnetic coupled circuit (L23, C23), third level parallel resonance unit (L3, C3), the 3rd electromagnetic coupled circuit (L34, C34), fourth stage parallel resonance unit (L4, C4), the 4th electromagnetic coupled circuit (L45, C45), level V parallel resonance unit (L5, C5), 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; The inductance (L5) of the inductance (L4) of the inductance (L3) of the inductance (L2) of the inductance (L1) of first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3, C3), fourth stage parallel resonance unit (L4, C4), level V parallel resonance unit (L5, C5) all adopts distributed constant cylindrical cavity body structure to realize, the electric capacity (C4) of the electric capacity (C2) of the electric capacity (C1) of first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), the electric capacity (C3) of third level parallel resonance unit (L3, C3), fourth stage parallel resonance unit (L4, C4), the electric capacity (C5) of level V parallel resonance unit (L5, C5) all adopt media plate electric capacity to realize; First coupling inductance (L12) adopts space coupling and the realization of distributed constant inductance between the first parallel resonance unit (L1, C1) and the second parallel resonance unit (L2, the C2), and space coupling and distributed constant electric capacity are realized between first coupling capacitance (C12) the employing first parallel resonance unit (L1, C1) and the second parallel resonance unit (L2, the C2); Second coupling inductance (L23) adopts space coupling and the realization of distributed constant inductance between the second parallel resonance unit (L2, C2) and the 3rd parallel resonance unit (L3, the C3), and space coupling and distributed constant electric capacity are realized between second coupling capacitance (C23) the employing second parallel resonance unit (L2, C2) and the 3rd parallel resonance unit (L3, the C3); The 3rd coupling inductance (L34) adopts space coupling and the realization of distributed constant inductance between the 3rd parallel resonance unit (L3, C3) and the 4th parallel resonance unit (L4, the C4), and space coupling and distributed constant electric capacity are realized between the 3rd coupling capacitance (C34) employing the 3rd parallel resonance unit (L3, C3) and the 4th parallel resonance unit (L4, the C4); The 4th coupling inductance (L45) adopts space coupling and the realization of distributed constant inductance between the 4th parallel resonance unit (L4, C4) and the 5th parallel resonance unit (L5, the C5), space coupling and the realization of distributed constant inductance between space coupling and distributed constant electric capacity are realized between the 4th coupling capacitance (C45) employing the 4th parallel resonance unit (L4, C4) and the 5th parallel resonance unit (L5, the C5).
3. according to claim 1 or the high restraining cavity band-pass filter of 2 desired low-losses; It is characterized in that: first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3, C3), fourth stage parallel resonance unit (L4, C4), level V parallel resonance unit (L5, C5) all adopt distributed constant circular cylindrical cavity coupled structure to realize; Wherein an end of the inductance (L5) of an end of the inductance (L4) of an end of the inductance (L3) of an end of the inductance (L2) of an end of the inductance (L1) of first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3, C3), fourth stage parallel resonance unit (L4, C4), level V parallel resonance unit (L5, C5) is distinguished ground connection; The other end links to each other with an end of the electric capacity (C4) of an end of the electric capacity (C3) of an end of the electric capacity (C2) of an end of the electric capacity (C1) of corresponding first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3, C3), fourth stage parallel resonance unit (L4, C4) respectively, an end of the electric capacity (C5) of level V parallel resonance unit (L5, C5) links to each other, and the other end of the other end of the other end of the other end of the electric capacity (C2) of the other end of the electric capacity (C1) of first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), the electric capacity (C3) of third level parallel resonance unit (L3, C3), the electric capacity (C4) of fourth stage parallel resonance unit (L4, C4), the electric capacity (C5) of level V parallel resonance unit (L5, C5) is ground connection respectively.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107393A (en) * | 2013-02-05 | 2013-05-15 | 江苏万邦微电子有限公司 | Multi-octave suppression miniature-cavity filter |
| 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 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640519A (en) * | 2009-09-02 | 2010-02-03 | 南京理工大学 | High stop-band inhibiting multi-zero 2.4 GHz mini filter |
| 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 |
-
2011
- 2011-10-27 CN CN2011103317274A patent/CN102509825A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640519A (en) * | 2009-09-02 | 2010-02-03 | 南京理工大学 | High stop-band inhibiting multi-zero 2.4 GHz mini filter |
| 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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