CN101621145A - L wave band miniature band pass filter with low loss and high suppression - Google Patents
L wave band miniature band pass filter with low loss and high suppression Download PDFInfo
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Abstract
The invention relates to an L wave band miniature band pass filter with low loss and high suppression, which comprises a surface-mounted input/output interface, five parallel resonance units achieved by adopting three layers of folded and coupled strip lines, four zero setting circuits and an input and output inductor, which are all achieved by adopting a multi-layer low temperature co-fired ceramic technology. The invention has the advantages of small volume, light weight, high reliability, excellent electrical performance, good phase-frequency characteristic linearity, good temperature stability, good bulk electrical performance consistency, low cost, mass production and the like, and is particularly suitable for radar, communication, rocket-bearing, airplane-bearing, missile-bearing, spacecrafts, one-man mobile communication terminals and other handheld and portable radio communication terminal products, as well as corresponding band systems which are serious about volume, weight, electrical performance and the like.
Description
Technical field
The present invention relates to a kind of filter, the high restraining band pass filter of particularly a kind of L-band low-loss.
Background technology
In microwave and millimeter wave communication, in the systems such as radar, especially ambulatory handheld formula wireless communication terminal and individual soldier's satellite mobile communication terminal and military and civilian multimode and multiplex communication terminal, airborne, missile-borne, in the aerospace communication system, high stopband restraining microwave if bandpas filter is the crucial electronic unit in this wave band reception and the transmitting branch, and the key technical indexes of describing this component capabilities has: the passband operating frequency range, the stop-band frequency scope, passband input/output voltage standing-wave ratio, passband inserts loss, stopband attenuation, form factor, insert phase shift and delay/frequency characteristic, temperature stability, volume, weight, reliability etc.Conventional filter design method, as 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 that 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 microwave band-pass filter of the low-loss of phase-frequency characteristic linear change.
The technical scheme that realizes the object of the invention is: the high restraining band pass filter of L-band low-loss of the present invention, the 50 ohmage input ports that comprise mounted on surface, input inductance, first order parallel resonance unit, the first zero is provided with circuit, parallel resonance unit, the second level, the second reset circuit, third level parallel resonance unit, the 3rd reset circuit, fourth stage parallel resonance unit, the 4th reset circuit, level V parallel resonance unit, outputting inductance, 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, first order parallel resonance in parallel unit between this outputting inductance and the input inductance, parallel resonance unit, the second level, third level parallel resonance unit, fourth stage parallel resonance unit and level V parallel resonance unit, the first zero of connecting between first order parallel resonance unit and parallel resonance unit, the second level is provided with circuit; The second reset circuit of connecting between parallel resonance unit, the second level and the third level parallel resonance unit; The 3rd reset circuit of connecting between third level parallel resonance unit and the fourth stage parallel resonance unit; The 4th reset circuit of connecting between fourth stage parallel resonance unit and the level V parallel resonance unit; Described first order parallel resonance unit, parallel resonance unit, the second level, fourth stage parallel resonance unit, third level parallel resonance unit and level V parallel resonance unit be ground connection respectively.
The present invention compared with prior art, owing to adopt the low-loss low-temperature co-burning ceramic material and 3 D stereo is integrated and the spatial folding strip line is realized parallel resonance unit and reset circuit, the remarkable advantage that is brought is: (1) passband internal loss is low, band is outer suppresses that high (2) volume is little, in light weight, reliability is high; (3) electrical property excellence, the phase-frequency characteristic linear change; (4) electrical property temperature stability height; (5) the circuit implementation structure is simple; (6) electrical property consistency is good, can realize producing in enormous quantities; (7) cost is low; (8) easy to install and use, can install and welding with full-automatic chip mounter; (9) 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 corresponding system that requires.
Description of drawings
Fig. 1 is the electrical schematic diagram of the high restraining band pass filter of L-band low-loss of the present invention.
Fig. 2 is the profile and the internal structure schematic diagram of the high restraining band pass filter of L-band low-loss of the present invention.
Fig. 3 is the parallel resonance cellular construction schematic diagram of the high restraining band pass filter of L-band low-loss of the present invention.
Fig. 4 is the photo in kind of the embodiment of the high restraining band pass filter of L-band low-loss of the present invention.
Fig. 5 is L-band low-loss high restraining band pass filter size of the present invention and pad figure.
Fig. 6 is the main performance test result of the high restraining band pass filter of L-band low-loss of the present invention embodiment.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
In conjunction with Fig. 1, Fig. 2, Fig. 3, the high restraining band pass filter of a kind of L-band low-loss of the present invention, the 50 ohmage input port P1 that comprise mounted on surface, input inductance L6, first order parallel resonance unit L1, C1, the first zero is provided with circuit L12, C12, parallel resonance unit, second level L2, C2, the second reset circuit L23, C23, third level parallel resonance unit L3, C3, the 3rd reset circuit L34, C34, fourth stage parallel resonance unit L3, C3, the 4th reset circuit L45, C45, level V parallel resonance unit L5, C5, outputting inductance L7,50 ohmage output port P2 and earth terminals of mounted on surface, input port P1 is connected with input inductance L6, output port P2 is connected with outputting inductance L7, first order parallel resonance unit L1 in parallel between this outputting inductance L7 and the input inductance L6, C1, 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 is at first order parallel resonance unit L1, C1 and parallel resonance unit, second level L2, the series connection first zero is provided with circuit L12 between the C2, C12; The second reset circuit L23, C23 connect between parallel resonance unit, second level L2, C2 and third level parallel resonance unit L3, the C3; The 3rd reset circuit L34, C34 connect between third level parallel resonance unit L3, C3 and fourth stage parallel resonance unit L4, the C4; The 4th reset circuit L45, C45 connect 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, 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.
The high restraining band pass filter of L-band low-loss of the present invention, 50 ohmage input port P1, the one termination input signal of mounted on surface, the end of another termination input inductance L6, the other end of input inductance L6 is provided with circuit L12 with an end and the first zero of first order parallel resonance unit L1, C1 respectively, the end of C12 connects, wherein first order parallel resonance unit L1, C1 are formed in parallel by first inductance L 1 and first capacitor C 1, and the first zero is provided with circuit L12, C12 and is formed in parallel by first zero inductance L 12 and first zero capacitor C 12; The other end that the first zero is provided with circuit L12, C12 links to each other with the end of the second reset circuit L23, C23 with parallel resonance unit, second level L2, C2 respectively, parallel resonance unit, second level L2, C2 are formed in parallel by second inductance L 2 and second capacitor C 2, the second reset circuit L23, C23 by second zero point inductance L 23 and the second minimum capacity C23 be formed in parallel; The other end of the second reset circuit L23, C23 respectively with third level parallel resonance unit L3, C3 and the 3rd reset circuit L34, the end of C34 links to each other, third level parallel resonance unit L3, C3 are formed in parallel by the 3rd inductance L 3 and the 3rd capacitor C 3, the 3rd reset circuit L34, C34 by the 3rd zero point inductance L 34 and the 3rd minimum capacity C34 be formed in parallel; The other end of described the 3rd reset circuit L34, C34 respectively with fourth stage parallel resonance unit L4, C4 and the 4th reset circuit L45, the end of C45 links to each other, fourth stage parallel resonance unit L4, C4 are formed in parallel by the 4th inductance L 4 and the 4th capacitor C 4, and the 4th reset circuit L45, C45 are formed in parallel by the 4th inductance at zero point (L34) and the 4th minimum capacity C34; The other end of the 4th reset circuit L45, C45 respectively with level V parallel resonance unit L5, the end of C5 and outputting inductance L7 links to each other, level V parallel resonance unit L5, C5 are formed in parallel by the 5th inductance L 5 and the 5th capacitor C 5; The other end of outputting inductance L7 is connected with the end of output port P2, the other end output signal of output port P2, 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 and level V parallel resonance unit L5, C5 be ground connection respectively.
In conjunction with Fig. 2, Fig. 3, the high restraining band pass filter of L-band low-loss of the present invention, input port P1, input inductance L6, first order parallel resonance unit L1, C1, the first zero is provided with circuit L12, C12, parallel resonance unit, second level L2, C2, the second reset circuit L23, C23, third level parallel resonance unit L3, C3, the 3rd reset circuit L34, C34, fourth stage parallel resonance unit L4, C4, the 4th reset circuit L45, C45, the 5th parallel resonance unit L5, C5, outputting inductance L7, output port P2 and earth terminal all adopt multilayer to realize with LTCC technology, input inductance L6 wherein, outputting inductance L7 all adopts the strip line of distributed constant to realize, 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, the 5th parallel resonance unit L5, C5 all adopts three layers of folding coupling strip line to realize, first zero capacitor C 12, the second minimum capacity C23, the 3rd minimum capacity C34, the 4th minimum capacity C45 adopts the first parallel resonance unit L1 respectively, C1 and parallel resonance unit, second level L2, C2, parallel resonance unit, second level L2, C2 and third level parallel resonance unit L3, between the C3, third level parallel resonance unit L3, C3 and fourth stage parallel resonance unit L4, between the C4, fourth stage parallel resonance unit L4, C4 and level V parallel resonance unit L5, space coupling and distributed constant electric capacity are realized first zero inductance L 12 between the C5, second zero point inductance L 23, the 3rd zero point inductance L 34, the 4th zero point inductance L 45 adopt the first parallel resonance unit L1 respectively, C1 and parallel resonance unit, second level L2, C2, parallel resonance unit, second level L2, C2 and third level parallel resonance unit L3, between the C3, third level parallel resonance unit L3, C3 and fourth stage parallel resonance unit L4, between the C4, fourth stage parallel resonance unit L4, C4 and level V parallel resonance unit L5, space coupling and distributed constant inductance are realized between the C5.
In conjunction with Fig. 2, Fig. 3, the high restraining band pass filter of L-band 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 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.
The high restraining band pass filter of L-band low-loss of the present invention, the first zero is provided with among circuit L12, the C12, first zero inductance L 12 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 the first zero capacitor C 12 employing first parallel resonance unit L1, C1 and the second parallel resonance unit L2, the C2; Among the second reset circuit L23, the C23, second zero point inductance L 23 adopt that space coupling and distributed constant inductance realize between the second parallel resonance unit L2, C2 and the 3rd parallel resonance unit L3, the C3, the second minimum capacity C23 adopts that space coupling and distributed constant electric capacity realize between the second parallel resonance unit L2, C2 and the 3rd parallel resonance unit L3, the C3; Among the 3rd reset circuit L34, the C34, the 3rd zero point inductance L 34 adopt that space coupling and distributed constant inductance realize between the 3rd parallel resonance unit L3, C3 and the 4th parallel resonance unit L4, the C4, the 3rd minimum capacity C34 adopts that space coupling and distributed constant electric capacity realize between the 3rd parallel resonance unit L3, C3 and the 4th parallel resonance unit L4, the C4; Among the 4th reset circuit L45, the C45, the 4th zero point inductance L 45 adopt that space coupling and distributed constant inductance realize between the 4th parallel resonance unit L4, C4 and the 5th parallel resonance unit L5, the C5, the 4th minimum capacity C45 adopts that 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 band pass filter of L-band low-loss of the present invention, its operation principle is summarized as follows: the broadband microwave signal of input arrives first order parallel resonance unit L1 through input port P1 by input inductance L6, C1, an end and the first zero that first inductance L 1 is connected with first capacitor C 1 are provided with circuit L12, the end of C12, at first order parallel resonance unit L1, the end of C1, in the described broadband microwave signal, near the first parallel resonance unit resonance frequency microwave signal enters first order parallel resonance unit L1, C1 and parallel resonance unit, second level L2, the first zero is provided with circuit L12 between the C2, C12, near all the other non-first parallel resonance unit resonance frequencies microwave signal is by first order parallel resonance unit L1, first inductance L 1 among the C1 and first capacitor C, 1 ground connection are realized first order filtering.The first zero is provided with circuit L12, near the parallel resonance frequency of 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 is provided with circuit L12 by the first zero, first zero inductance L 12 among the C12 and first zero capacitor C 12 arrive parallel resonance unit, second level L2, among the C2, end that second inductance L 2 is connected with second capacitor C 2 and parallel resonance unit, second level L2, C2 and third level parallel resonance unit L3, the second reset circuit L23 between the C3, the end of C23, through the first order filtering and the first zero circuit L12 is set, the microwave signal of C12, at the second parallel resonance unit L2, near the C2 resonance frequency microwave signal enters the second reset circuit L23, C23, near all the other non-second parallel resonance unit resonance frequencies microwave signal is by parallel resonance unit, second level L2, second inductance L 2 among the C2 and second capacitor C, 2 ground connection are realized second level filtering.The second reset circuit L23, near the parallel resonance frequency of 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 is by the second reset circuit L23, among the C23 second zero point inductance L 23 and the second minimum capacity C23 arrive third level parallel resonance unit L3, end that the 3rd inductance L 3 of C3 kind is connected with the 3rd capacitor C 3 and the 3rd reset circuit L34, the end of C34, through the first order, the second level filtering and the first zero are provided with circuit L12, C12, the second reset circuit L23, the microwave signal of C23, at the 3rd parallel resonance unit L3, near the C3 resonance frequency microwave signal enters third level parallel resonance unit L3, C3 and fourth stage parallel resonance unit L3, the 3rd reset circuit L34 between the C3, C34, all the other non-the 3rd parallel resonance unit L34, near the C34 resonance frequency microwave signal is by third level parallel resonance unit L3, the 3rd inductance L 3 among the C3 and the 3rd capacitor C 3 ground connection are realized third level filtering.The 3rd reset circuit L34, near the parallel resonance frequency of 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 is by the 3rd reset circuit L34, among the C34 the 3rd zero point inductance L 34 and the 3rd minimum capacity C34 arrive fourth stage parallel resonance unit L4, end that C4 kind the 4th inductance L 4 is connected with the 4th capacitor C 4 and fourth stage parallel resonance unit L4, C4 and level V parallel resonance unit L5, the 4th reset circuit L34 between the C5, the end of C34, through the first order, the second level, third level filtering and first, second, the microwave signal of the 3rd reset circuit, at the 4th parallel resonance unit L4, near the C4 resonance frequency microwave signal enters the 4th reset circuit L45, C45, near all the other non-the 4th parallel resonance unit resonance frequencies microwave signal is by fourth stage parallel resonance unit L4, the 4th inductance L 4 among the C4 and the 4th capacitor C 4 ground connection are realized fourth stage filtering.The 4th reset circuit L45, near the parallel resonance frequency of 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 is by the 4th reset circuit L45, among the C45 the 4th zero point inductance L 45 and the 4th minimum capacity C45 arrive level V parallel resonance unit L5, an end that C5 kind the 5th inductance L 5 is connected with the 5th capacitor C 5 and the end of outputting inductance L7, through the first order, the second level, the third level, the fourth stage filtering and the first zero are provided with circuit L12, C12, the second reset circuit L23, C23, the 3rd reset circuit L34, C34, the microwave signal L45 of the 4th reset circuit, C45, at the 5th parallel resonance unit L5, near the C5 resonance frequency microwave signal connects the end of 50 ohmage output port P2 of mounted on surface by outputting inductance L7, near all the other non-the 5th parallel resonance unit resonance frequencies microwave signal is by level V parallel resonance unit L5, the 5th inductance L 5 among the C5 and the 5th capacitor C 5 ground connection are realized level V filtering.Through first order filtering, second level filtering, third level filtering, fourth stage filtering, level V filtering, the first zero circuit L12, C12 are set, the second reset circuit L23, C23, the 3rd reset circuit L34, C34, the microwave signal of the 4th reset circuit L45, C45, the other end output of 50 ohmage output port P2 by mounted on surface, thus realize the high restraining bandpass filtering of L-band low-loss function.
The high restraining band pass filter of L-band low-loss of the present invention 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.
Fig. 4 is photo in kind and the size of the high restraining band pass filter of L-band low-loss of the present invention embodiment, and volume is 4.8mm * 4.2mm * 1.5mm.Fig. 5 is the main performance test result of the high restraining band pass filter of L-band low-loss of the present invention embodiment.This filter bandwidht is 200MHz, inserts loss all less than 3.5 decibels in the actual measurement filter passband, and low stopband suppresses to be better than-55 decibels, and high stopband suppresses to be better than-45 decibels, has good performance of filter.
Claims (5)
1, the high restraining band pass filter of a kind of L-band low-loss, it is characterized in that: the 50 ohmage input ports (P1) that comprise mounted on surface, input inductance (L6), first order parallel resonance unit (L1, C1), the first zero is provided with circuit (L12, C12), parallel resonance unit, the second level (L2, C2), the second reset circuit (L23, C23), third level parallel resonance unit (L3, C3), the 3rd reset circuit (L34, C34), fourth stage parallel resonance unit (L3, C3), the 4th reset circuit (L45, C45), level V parallel resonance unit (L5, C5), outputting inductance (L7), 50 ohmage output port (P2) and earth terminals of mounted on surface; Input port (P1) is connected with input inductance (L6), output port (P2) is connected with outputting inductance (L7), first order parallel resonance in parallel 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 (L7) and the input inductance (L6), the first zero of connecting between first order parallel resonance unit (L1, C1) and parallel resonance unit, the second level (L2, C2) is provided with circuit (L12, C12); The second reset 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 reset circuit (L34, C34) of connecting between third level parallel resonance unit (L3, C3) and fourth stage parallel resonance unit (L4, the C4); The 4th reset circuit (L45, C45) of connecting between fourth stage parallel resonance unit (L4, C4) and level V parallel resonance unit (L5, the C5); First order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), fourth stage parallel resonance unit, third level parallel resonance unit (L3, C3) (L4, C4) and level V parallel resonance unit (L5, C5) difference ground connection.
2, the high restraining band pass filter of L-band low-loss according to claim 1, it is characterized in that: 50 ohmage input ports (P1) termination input signal of mounted on surface, one end of another termination input inductance (L6), the other end of input inductance (L6) respectively with first order parallel resonance unit (L1, C1) an end and the first zero are provided with circuit (L12, C12) a end connects, first order parallel resonance unit (L1 wherein, C1) be formed in parallel by first inductance (L1) and first electric capacity (C1), the first zero is provided with circuit (L12, C12) be formed in parallel by first zero inductance (L12) and first zero electric capacity (C12); The other end that the first zero is provided with circuit (L12, C12) respectively with parallel resonance unit, the second level (L2, C2) and the second reset circuit (L23, C23) a end links to each other, parallel resonance unit, the second level (L2, C2) is formed in parallel by second inductance (L2) and second electric capacity (C2), and the second reset circuit (L23, C23) is formed in parallel by second inductance at zero point (L23) and second minimum capacity (C23); The other end of the second reset circuit (L23, C23) respectively with third level parallel resonance unit (L3, C3) and the 3rd reset circuit (L34, C34) a end links to each other, third level parallel resonance unit (L3, C3) is formed in parallel by the 3rd inductance (L3) and the 3rd electric capacity (C3), and the 3rd reset circuit (L34, C34) is formed in parallel by the 3rd inductance at zero point (L34) and the 3rd minimum capacity (C34); The other end of the 3rd reset circuit (L34, C34) respectively with fourth stage parallel resonance unit (L4, C4) and the 4th reset circuit (L45, C45) a end links to each other, fourth stage parallel resonance unit (L4, C4) is formed in parallel by the 4th inductance (L4) and the 4th electric capacity (C4), and the 4th reset circuit (L45, C45) is formed in parallel by the 4th inductance at zero point (L34) and the 4th minimum capacity (C34); The other end of the 4th reset circuit (L45, C45) respectively with level V parallel resonance unit (L5, C5) end with outputting inductance (L7) links to each other, and level V parallel resonance unit (L5, C5) is formed in parallel by the 5th inductance (L5) and the 5th electric capacity (C5); The other end of outputting inductance (L7) is connected with an end of output port (P2), the other end output signal of output port (P2), first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), fourth stage parallel resonance unit, third level parallel resonance unit (L3, C3) (L4, C4) and level V parallel resonance unit (L5, C5) difference ground connection.
3, the high restraining band pass filter of L-band low-loss according to claim 1 and 2, it is characterized in that: input port (P1), input inductance (L6), first order parallel resonance unit (L1, C1), the first zero is provided with circuit (L12, C12), parallel resonance unit, the second level (L2, C2), the second reset circuit (L23, C23), third level parallel resonance unit (L3, C3), the 3rd reset circuit (L34, C34), fourth stage parallel resonance unit (L4, C4), the 4th reset circuit (L45, C45), the 5th parallel resonance unit (L5, C5), outputting inductance (L7), output port (P2) and earth terminal all adopt multilayer to realize with LTCC technology, input inductance (L6) wherein, outputting inductance (L7) all adopts the strip line of distributed constant to realize, 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), the 5th parallel resonance unit (L5, C5) all adopt three layers of folding coupling strip line to realize, first zero electric capacity (C12), second minimum capacity (C23), the 3rd minimum capacity (C34), the 4th minimum capacity (C45) adopts the first parallel resonance unit (L1 respectively, C1) with parallel resonance unit, the second level (L2, C2) between, parallel resonance unit, the second level (L2, C2) with third level parallel resonance unit (L3, C3) between, third level parallel resonance unit (L3, C3) with fourth stage parallel resonance unit (L4, C4) between, fourth stage parallel resonance unit (L4, C4) with level V parallel resonance unit (L5, C5) space coupling and distributed constant electric capacity are realized between, first zero inductance (L12), second inductance at zero point (L23), the 3rd inductance at zero point (L34), the 4th inductance at zero point (L45) adopts the first parallel resonance unit (L1 respectively, C1) with parallel resonance unit, the second level (L2, C2) between, (L2 is C2) with third level parallel resonance unit (L3 for parallel resonance unit, the second level, C3) between, third level parallel resonance unit (L3, C3) with fourth stage parallel resonance unit (L4, C4) between, fourth stage parallel resonance unit (L4, C4) with level V parallel resonance unit (L5, C5) space coupling and distributed constant inductance are realized between.
4, the high restraining band pass filter of L-band low-loss according to claim 1 and 2, 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) 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.
5, the high restraining band pass filter of L-band low-loss according to claim 1 and 2, it is characterized in that: the first zero is provided with in the circuit (L12, C12), first zero 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 zero electric capacity (C12) the employing first parallel resonance unit (L1, C1) and the second parallel resonance unit (L2, the C2); In the second reset circuit (L23, C23), second inductance at zero point (L23) adopts space coupling and the realization of distributed constant inductance between second parallel resonance unit (L2, C2) and the 3 two the parallel resonance unit (L3, C3), and space coupling and distributed constant electric capacity are realized between second minimum capacity (C23) the employing second parallel resonance unit (L2, C2) and the 3rd parallel resonance unit (L3, the C3); In the 3rd reset circuit (L34, C34), the 3rd inductance at zero point (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 minimum capacity (C34) employing the 3rd parallel resonance unit (L3, C3) and the 4th parallel resonance unit (L4, the C4); In the 4th reset circuit (L45, C45), the 4th inductance at zero point (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), and space coupling and distributed constant electric capacity are realized between the 4th minimum capacity (C45) employing the 4th parallel resonance unit (L4, C4) and the 5th parallel resonance unit (L5, the C5).
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509829A (en) * | 2011-10-27 | 2012-06-20 | 无锡南理工科技发展有限公司 | Miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression |
| CN102509828A (en) * | 2011-10-27 | 2012-06-20 | 无锡南理工科技发展有限公司 | L-wave-band harmonic suppression minitype band-pass filter |
| CN102569959A (en) * | 2011-12-30 | 2012-07-11 | 南京理工大学 | Micro microwave filter special for satellite navigation |
| CN102594283A (en) * | 2012-03-22 | 2012-07-18 | 南京理工大学常熟研究院有限公司 | Stop-band high-suppression cascade band-pass filter |
| CN102610885A (en) * | 2012-03-22 | 2012-07-25 | 南京理工大学常熟研究院有限公司 | L-waveband broadband multi-zero micro-filter |
| CN102611407A (en) * | 2012-03-22 | 2012-07-25 | 南京理工大学常熟研究院有限公司 | Micro band-pass filter for suppressing Ku-band harmonic waves into millimeter waves |
| CN102610884A (en) * | 2012-03-22 | 2012-07-25 | 南京理工大学常熟研究院有限公司 | Low temperature co-fired ceramic ultra-wideband micro filter |
| CN102610886A (en) * | 2012-03-22 | 2012-07-25 | 南京理工大学常熟研究院有限公司 | L-waveband high stopband rejection micro band-pass filter |
| CN102629858A (en) * | 2012-03-22 | 2012-08-08 | 南京理工大学常熟研究院有限公司 | Ultra-short wave miniature bandpass filter |
| CN102683775A (en) * | 2012-03-22 | 2012-09-19 | 南京理工大学常熟研究院有限公司 | C-band low-insertion-loss and high-rejection miniature band-pass 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 |
| CN104091983A (en) * | 2014-07-16 | 2014-10-08 | 南京理工大学 | Minitype microwave millimeter wave self-load I/Q variable phase-inversion orthogonal filter |
| CN104409806A (en) * | 2014-09-13 | 2015-03-11 | 南京理工大学 | Mini active microwave and millimeter wave self-loading I/Q variable phase reversal orthogonal filter |
| CN104579219A (en) * | 2014-12-30 | 2015-04-29 | 中国科学院深圳先进技术研究院 | High-grade low-pass filter |
| CN104966869A (en) * | 2015-06-29 | 2015-10-07 | 南京理工大学 | HTriple-band high performance filter set with one output selected from three paths |
| CN105006618A (en) * | 2015-08-07 | 2015-10-28 | 南京理工大学 | LTCC-and-DGS-based miniature multi-path filter set |
| CN105024120A (en) * | 2015-07-13 | 2015-11-04 | 南京理工大学 | X wave band and Ku wave band mixing duplex filter |
| CN105070984A (en) * | 2015-06-29 | 2015-11-18 | 南京理工大学 | Super high frequency (SHF) wave band high-performance filter bank based on low temperature co-fired ceramic (LTCC) and defected ground structure (DGS) technology |
| CN105161810A (en) * | 2015-09-10 | 2015-12-16 | 电子科技大学 | Low temperature co-fired ceramic (LTCC) miniature power gain equalizer based on composite right/left-handed structure |
| CN107658532A (en) * | 2017-10-23 | 2018-02-02 | 石家庄创天电子科技有限公司 | Wave filter |
| CN108134590A (en) * | 2017-12-20 | 2018-06-08 | 广西师范大学 | A kind of N channel wave filter |
| CN108259021A (en) * | 2018-01-10 | 2018-07-06 | 广西师范大学 | A kind of CMOS broadbands distribution variable band-pass filter |
| CN111669139A (en) * | 2019-03-05 | 2020-09-15 | 太阳诱电株式会社 | Filter and front-end circuit |
| CN112073019A (en) * | 2020-07-31 | 2020-12-11 | 南京邮电大学 | Miniature high-rejection radio frequency on-chip band-pass filter |
| CN113708027A (en) * | 2021-08-23 | 2021-11-26 | 成都频岢微电子有限公司 | Capacitor loading type miniaturized 5G filter based on multilayer PCB structure |
-
2009
- 2009-08-11 CN CN200910184020A patent/CN101621145A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 张祥军等: "小型化多层带线谐振腔缺陷地结构LTCC宽带带通滤波器", 《微波学报》 * |
| 成都电讯工程学院七系: "《LC滤波器和螺旋滤波器的设计》", 31 May 1978 * |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509829A (en) * | 2011-10-27 | 2012-06-20 | 无锡南理工科技发展有限公司 | Miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression |
| CN102509828A (en) * | 2011-10-27 | 2012-06-20 | 无锡南理工科技发展有限公司 | L-wave-band harmonic suppression minitype band-pass filter |
| CN102569959A (en) * | 2011-12-30 | 2012-07-11 | 南京理工大学 | Micro microwave filter special for satellite navigation |
| CN102629858A (en) * | 2012-03-22 | 2012-08-08 | 南京理工大学常熟研究院有限公司 | Ultra-short wave miniature bandpass filter |
| CN102610885A (en) * | 2012-03-22 | 2012-07-25 | 南京理工大学常熟研究院有限公司 | L-waveband broadband multi-zero micro-filter |
| CN102611407A (en) * | 2012-03-22 | 2012-07-25 | 南京理工大学常熟研究院有限公司 | Micro band-pass filter for suppressing Ku-band harmonic waves into millimeter waves |
| CN102610884A (en) * | 2012-03-22 | 2012-07-25 | 南京理工大学常熟研究院有限公司 | Low temperature co-fired ceramic ultra-wideband micro filter |
| CN102610886A (en) * | 2012-03-22 | 2012-07-25 | 南京理工大学常熟研究院有限公司 | L-waveband high stopband rejection micro band-pass filter |
| CN102683775A (en) * | 2012-03-22 | 2012-09-19 | 南京理工大学常熟研究院有限公司 | C-band low-insertion-loss and high-rejection miniature band-pass filter |
| CN102594283A (en) * | 2012-03-22 | 2012-07-18 | 南京理工大学常熟研究院有限公司 | Stop-band high-suppression cascade band-pass 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 |
| CN104091983B (en) * | 2014-07-16 | 2016-08-17 | 南京理工大学 | The self-supported I/Q of miniature microwave and millimeter wave variable paraphase orthogonal filter |
| CN104091983A (en) * | 2014-07-16 | 2014-10-08 | 南京理工大学 | Minitype microwave millimeter wave self-load I/Q variable phase-inversion orthogonal filter |
| CN104409806A (en) * | 2014-09-13 | 2015-03-11 | 南京理工大学 | Mini active microwave and millimeter wave self-loading I/Q variable phase reversal orthogonal filter |
| CN104409806B (en) * | 2014-09-13 | 2017-05-17 | 南京理工大学 | Mini active microwave and millimeter wave self-loading I/Q variable phase reversal orthogonal filter |
| CN104579219A (en) * | 2014-12-30 | 2015-04-29 | 中国科学院深圳先进技术研究院 | High-grade low-pass filter |
| CN104966869A (en) * | 2015-06-29 | 2015-10-07 | 南京理工大学 | HTriple-band high performance filter set with one output selected from three paths |
| CN105070984A (en) * | 2015-06-29 | 2015-11-18 | 南京理工大学 | Super high frequency (SHF) wave band high-performance filter bank based on low temperature co-fired ceramic (LTCC) and defected ground structure (DGS) technology |
| CN105024120A (en) * | 2015-07-13 | 2015-11-04 | 南京理工大学 | X wave band and Ku wave band mixing duplex filter |
| CN105006618A (en) * | 2015-08-07 | 2015-10-28 | 南京理工大学 | LTCC-and-DGS-based miniature multi-path filter set |
| CN105161810A (en) * | 2015-09-10 | 2015-12-16 | 电子科技大学 | Low temperature co-fired ceramic (LTCC) miniature power gain equalizer based on composite right/left-handed structure |
| CN105161810B (en) * | 2015-09-10 | 2019-01-22 | 电子科技大学 | LTCC based on composite left-and-right-hand structure minimizes power gain balancer |
| CN107658532A (en) * | 2017-10-23 | 2018-02-02 | 石家庄创天电子科技有限公司 | Wave filter |
| CN108134590A (en) * | 2017-12-20 | 2018-06-08 | 广西师范大学 | A kind of N channel wave filter |
| CN108259021A (en) * | 2018-01-10 | 2018-07-06 | 广西师范大学 | A kind of CMOS broadbands distribution variable band-pass filter |
| CN111669139A (en) * | 2019-03-05 | 2020-09-15 | 太阳诱电株式会社 | Filter and front-end circuit |
| CN111669139B (en) * | 2019-03-05 | 2023-05-16 | 太阳诱电株式会社 | Filter and front-end circuit |
| CN112073019A (en) * | 2020-07-31 | 2020-12-11 | 南京邮电大学 | Miniature high-rejection radio frequency on-chip band-pass filter |
| CN113708027A (en) * | 2021-08-23 | 2021-11-26 | 成都频岢微电子有限公司 | Capacitor loading type miniaturized 5G filter based on multilayer PCB structure |
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