CN105186077A - Miniature microwave filter bank for ultra high frequency (UHF) wave band - Google Patents
Miniature microwave filter bank for ultra high frequency (UHF) wave band Download PDFInfo
- Publication number
- CN105186077A CN105186077A CN201510553572.7A CN201510553572A CN105186077A CN 105186077 A CN105186077 A CN 105186077A CN 201510553572 A CN201510553572 A CN 201510553572A CN 105186077 A CN105186077 A CN 105186077A
- Authority
- CN
- China
- Prior art keywords
- coil
- electric capacity
- resonator
- inductance
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a miniature microwave filter bank for an ultra high frequency (UHF) wave band. The miniature microwave filter bank comprises a single-pole double-throw switch chip WKD102A000040 and two microwave filters with different frequency band ranges and is achieved by using a multi-layer low temperature co-firing ceramic process. The miniature microwave filter bank has the advantages of light weight, small volume, high reliability, good electrical performance, favorable temperature stability, high consistency in electrical performance batches, low cost and the like, is easy to debug, can be produced at a large scale, and is applicable for communication of corresponding microwave frequency bands, satellite communications and the like of an occasion and a corresponding system which are strict on volume, electrical performance, temperature stability and reliability.
Description
Technical field
The present invention relates to two kinds of bank of filters, be UHF waveband micro microwave filter.
Background technology
In recent years, along with the developing rapidly of microminiaturization of mobile communication, satellite communication and Defensive Avionics System, high-performance, low cost and miniaturization have become the developing direction of microwave current/RF application, all have higher requirement to the performance of microwave filter, size, reliability and cost.The leading indicator describing this component capabilities has: passband operating frequency range, stop band frequency range, pass band insertion loss, stopband attenuation, passband input/output voltage standing-wave ratio, insertion phase shift and delay/frequency characteristic, temperature stability, volume, weight, reliability etc.Be connected by switch by the filter of different frequency, shaping filter group, can expand the scope of application of filter.
LTCC is a kind of Electronic Encapsulating Technology, adopts multi-layer ceramics technology, passive component can be built in medium substrate inside, and also active element can be mounted on substrate surface makes passive/active integrated functional module simultaneously.LTCC technology all shows many merits in cost, integration packaging, wiring live width and distance between centers of tracks, low impedance metal, design diversity and flexibility and high frequency performance etc., has become the mainstream technology of passive integration.The advantages such as it has high q-factor, is convenient to embedded passive device, and thermal diffusivity is good, and reliability is high, high temperature resistant, punching shake, utilize LTCC technology, can well process size little, precision is high, and tight type is good, the microwave device that loss is little.Because LTCC technology has the integrated advantage of 3 D stereo, be widely used for manufacturing various microwave passive components at microwave frequency band, the height realizing passive component is integrated.Based on the stack technology of LTCC technique, can realize three-dimensional integrated, thus size is little, lightweight, performance is excellent, reliability is high, batch production performance consistency is good and the plurality of advantages such as low cost to make various micro microwave filter have, utilize its three-dimensional integrated morphology feature, micro microwave filter group can be realized.
Summary of the invention
The object of the present invention is to provide and a kind ofly realize that volume is little, lightweight, reliability is high by strip lines configuration, excellent electrical property, the micro microwave filter group that easy to use, applied widely, rate of finished products is high, batch consistency is good, cost is low, temperature performance is stable.
The technical scheme realizing the object of the invention is: a kind of UHF waveband micro microwave filter group, it comprises single-pole double-throw switch (SPDT) chips W KD102A000040 and two microwave filter.First microwave filter comprises surface-pasted 50 ohmage first input end mouths, the first input inductance, the first resonator, the second resonator, the 3rd resonator, the 4th resonator, the first outputting inductance, the first Z-shaped interstage coupling strip line, surface-pasted 50 ohmage first output port and earth terminals.Wherein, the first resonator is formed by the first coil and the first Capacitance parallel connection, and one end of the first coil is connected with one end of the first electric capacity, the other end of the first coil and the other end of the first electric capacity ground connection respectively; Second resonator is formed by the second coil and the second Capacitance parallel connection, and one end of the second coil is connected with one end of the second electric capacity, the other end of the second coil and the other end of the second electric capacity ground connection respectively; 3rd resonator is formed by tertiary coil and the 3rd Capacitance parallel connection, and one end of tertiary coil is connected with one end of the 3rd electric capacity, the other end of tertiary coil and the other end of the 3rd electric capacity ground connection respectively; 4th resonator is formed by the 4th coil and the 4th Capacitance parallel connection, and one end of the 4th coil is connected with one end of the 4th electric capacity, the other end of the 4th coil and the other end of the 4th electric capacity ground connection respectively; First coil, the second coil, tertiary coil, the 4th coil are two-layer square spiral coil structure, and the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity are double-level-metal plate structure.Surface-pasted 50 ohmage first input end mouths are connected with the first left end inputting inductance, the right-hand member of the first input inductance is connected with the first electric capacity with the first coil, surface-pasted 50 ohmage first output ports are connected with the right-hand member of the first outputting inductance, the left end of the first outputting inductance is connected with the 4th electric capacity with the 4th coil, and the first Z-shaped interstage coupling strip line is positioned on the first resonator, the second resonator, the 3rd resonator, the 4th resonator.Second microwave filter comprises surface-pasted 50 ohmage second input ports, the second input inductance, the 5th resonator, sixth resonator, the 7th resonator, the 8th resonator, the second outputting inductance, the second Z-shaped interstage coupling strip line, surface-pasted 50 ohmage second output port and earth terminals.Wherein, the 5th resonator is formed by the 5th coil and the 5th Capacitance parallel connection, and one end of the 5th coil is connected with one end of the 5th electric capacity, the other end of the 5th coil and the other end of the 5th electric capacity ground connection respectively; Sixth resonator is formed by the 6th coil and the 6th Capacitance parallel connection, and one end of the 6th coil is connected with one end of the 6th electric capacity, the other end of the 6th coil and the other end of the 6th electric capacity ground connection respectively; 7th resonator is formed by the 7th coil and the 7th Capacitance parallel connection, and one end of the 7th coil is connected with one end of the 7th electric capacity, the other end of the 7th coil and the other end of the 7th electric capacity ground connection respectively; 8th resonator is formed by the 8th coil and the 8th Capacitance parallel connection, and one end of the 8th coil is connected with one end of the 8th electric capacity, the other end of the 8th coil and the other end of the 8th electric capacity ground connection respectively; 5th coil, the 6th coil, the 7th coil, the 8th coil are two-layer square spiral coil structure, and the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity are double-level-metal plate structure.Surface-pasted 50 ohmage second input ports are connected with the second left end inputting inductance, the right-hand member of the second input inductance is connected with the 5th electric capacity with the 5th coil, surface-pasted 50 ohmage second output ports are connected with the right-hand member of the second outputting inductance, the left end of the second outputting inductance is connected with the 8th electric capacity with the 8th coil, and the second Z-shaped interstage coupling strip line is positioned on the 5th resonator, sixth resonator, the 7th resonator, the 8th resonator.
Compared with prior art, due to the present invention adopt low-loss low-temperature co-burning ceramic material and 3 D stereo integrated, the remarkable advantage brought is: (1) band in smooth; (2) the identical signal waveform of different frequency can be produced; (3) volume is little, lightweight, reliability is high; (4) excellent electrical property; (5) circuit realiration structure is simple, can realize producing in enormous quantities; (6) cost is low.
Accompanying drawing explanation
Fig. 1 (a) is the contour structures schematic diagram of a kind of UHF waveband micro microwave filter of the present invention group.
Fig. 1 (b) is profile and the internal structure schematic diagram of the first microwave filter in a kind of UHF waveband micro microwave filter of the present invention group.
Fig. 1 (c) is profile and the internal structure schematic diagram of the second microwave filter in a kind of UHF waveband micro microwave filter of the present invention group.
Fig. 2 is the amplitude-versus-frequency curve of a kind of UHF waveband micro microwave filter of the present invention group output port when connecing the first microwave filter.
Fig. 3 is the stationary wave characteristic curve of a kind of UHF waveband micro microwave filter of the present invention group input port when connecing the first microwave filter.
Fig. 4 is the amplitude-versus-frequency curve of a kind of UHF waveband micro microwave filter of the present invention group output port when connecing the second microwave filter.
Fig. 5 is the stationary wave characteristic curve of a kind of UHF waveband micro microwave filter of the present invention group input port when connecing the second microwave filter.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Composition graphs 1(a), (b), (c), a kind of UHF waveband micro microwave filter of the present invention group, first microwave filter (F1) of this bank of filters comprises surface-pasted 50 ohmage first input end mouths (P1), the first input inductance (Lin1), the first resonator (L1, C1), the second resonator (L2, C2), the 3rd resonator (L3, C3), the 4th resonator (L4, C4), the first outputting inductance (Lout1), the first Z-shaped interstage coupling strip line (Z1), surface-pasted 50 ohmage first output port (P2) and earth terminals.Wherein, first resonator (L1, C1) is formed in parallel by the first coil (L1) and the first electric capacity (C1), one end of first coil (L1) is connected with one end of the first electric capacity (C1), the other end of the first coil (L1) and the other end of the first electric capacity (C1) ground connection respectively; Second resonator (L2, C2) is formed in parallel by the second coil (L2) and the second electric capacity (C2), one end of second coil (L2) is connected with one end of the second electric capacity (C2), the other end of the second coil (L2) and the other end of the second electric capacity (C2) ground connection respectively; 3rd resonator (L3, C3) is formed in parallel by tertiary coil (L3) and the 3rd electric capacity (C3), one end of tertiary coil (L3) is connected with one end of the 3rd electric capacity (C3), the other end of tertiary coil (L3) and the other end of the 3rd electric capacity (C3) ground connection respectively; 4th resonator (L4, C4) is formed in parallel by the 4th coil (L4) and the 4th electric capacity (C4), one end of 4th coil (L4) is connected with one end of the 4th electric capacity (C4), the other end of the 4th coil (L4) and the other end of the 4th electric capacity (C4) ground connection respectively; First coil (L1), the second coil (L2), tertiary coil (L3), the 4th coil (L4) are two-layer square spiral coil structure, and the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4) are double-level-metal plate structure.Surface-pasted 50 ohmage first input end mouths (P1) are connected with the first left end inputting inductance (Lin1), the right-hand member of the first input inductance (Lin1) is connected with the first electric capacity (C1) with the first coil (L1), surface-pasted 50 ohmage first output ports (P2) are connected with the right-hand member of the first outputting inductance (Lout1), the left end of the first outputting inductance (Lout1) is connected with the 4th electric capacity (C4) with the 4th coil (L4), first Z-shaped interstage coupling strip line (Z1) is positioned at the first resonator (L1, C1), second resonator (L2, C2), 3rd resonator (L3, C3), 4th resonator (L4, C4) on.Second microwave filter (F2) comprises surface-pasted 50 ohmage second input ports (P3), the second input inductance (Lin2), the 5th resonator (L5, C5), sixth resonator (L6, C6), the 7th resonator (L7, C7), the 8th resonator (L8, C8), the second outputting inductance (Lout2), the second Z-shaped interstage coupling strip line (Z2), surface-pasted 50 ohmage second output port (P4) and earth terminals.Wherein, 5th resonator (L5, C5) is formed in parallel by the 5th coil (L5) and the 5th electric capacity (C5), one end of 5th coil (L5) is connected with one end of the 5th electric capacity (C5), the other end of the 5th coil (L5) and the other end of the 5th electric capacity (C5) ground connection respectively; Sixth resonator (L6, C6) is formed in parallel by the 6th coil (L6) and the 6th electric capacity (C6), one end of 6th coil (L6) is connected with one end of the 6th electric capacity (C6), the other end of the 6th coil (L6) and the other end of the 6th electric capacity (C6) ground connection respectively; 7th resonator (L7, C7) is formed in parallel by the 7th coil (L7) and the 7th electric capacity (C7), one end of 7th coil (L7) is connected with one end of the 7th electric capacity (C7), the other end of the 7th coil (L7) and the other end of the 7th electric capacity (C7) ground connection respectively; 8th resonator (L8, C8) is formed in parallel by the 8th coil (L8) and the 8th electric capacity (C8), one end of 8th coil (L8) is connected with one end of the 8th electric capacity (C8), the other end of the 8th coil (L8) and the other end of the 8th electric capacity (C8) ground connection respectively; 5th coil (L5), the 6th coil (L6), the 7th coil (L7), the 8th coil (L8) are two-layer square spiral coil structure, and the 5th electric capacity (C5), the 6th electric capacity (C6), the 7th electric capacity (C7), the 8th electric capacity (C8) are double-level-metal plate structure.Surface-pasted 50 ohmage second input ports (P3) are connected with the second left end inputting inductance (Lin2), the right-hand member of the second input inductance (Lin2) is connected with the 5th electric capacity (C5) with the 5th coil (L5), surface-pasted 50 ohmage second output ports (P4) are connected with the right-hand member of the second outputting inductance (Lout2), the left end of the second outputting inductance (Lout2) is connected with the 8th electric capacity (C8) with the 8th coil (L8), second Z-shaped interstage coupling strip line (Z2) is positioned at the 5th resonator (L5, C5), sixth resonator (L6, C6), 7th resonator (L7, C7), 8th resonator (L8, C8) on.
Composition graphs 1(a), (b), (c), surface-pasted 50 ohmage input ports (P1, P3), surface-pasted 50 ohmage output ports (P2, P4), input inductance (Lin1, Lin2), outputting inductance (Lout1, Lout2), electric capacity (C1, C2, C3, C4, C5, C6, C7, C8), coil (L1, L2, L3, L4, L5, L6, L7, L8), Z-shaped interstage coupling strip line (Z1, Z2) and earth terminal all adopt multilayer LTCC technique to realize.
A kind of UHF waveband micro microwave filter group, owing to being the realization of employing multilayer LTCC technique, its low-temperature co-burning ceramic material and metallic pattern sinter and form at about 900 DEG C of temperature, so have extreme high reliability and temperature stability, because structure adopts, 3 D stereo is integrated to be grounded with multilayer folding structure and outer surface metallic shield and to encapsulate, thus volume is significantly reduced.
WKD102A000040 cake core is the voltage-controlled reflective single-pole double-throw switch (SPDT) chip of a filter with low insertion loss, and use the long GaAs pseudomorphic high electron mobility transistor manufacture technics of 0.25 micron of grid to form, this chip is by back metal via through holes ground connection.All chip products are all through 100% radio-frequency measurement.WKD102A000040 cake core is 0/-5V power work, insertion loss in DC ~ 4GHz: 1.4dB, isolation: 45dB, input vswr: 1.3:1, output VSWR: 1.3:1, switching time: 10ns.
In a kind of UHF waveband micro microwave filter of the present invention, the size of two microwave filters is 3.2mm × 3.2mm × 1.5mm.Its performance can be found out from Fig. 2, Fig. 3, Fig. 4, Fig. 5, the pass band width of the first microwave filter is 200MHz ~ 350MHz, the corresponding return loss of input port is better than 15dB, output port insertion loss is better than 4dB, the pass band width of the second microwave filter is 480MHz ~ 780MHz, the corresponding return loss of input port is better than 14dB, and output port insertion loss is better than 3.3dB.
Claims (3)
1. a UHF waveband micro microwave filter group, is characterized in that: the microwave filter comprising single-pole double-throw switch (SPDT) chips W KD102A000040 and two different frequency range, first microwave filter (F1) comprises surface-pasted 50 ohmage first input end mouths (P1), the first input inductance (Lin1), the first resonator (L1, C1), the second resonator (L2, C2), the 3rd resonator (L3, C3), the 4th resonator (L4, C4), the first outputting inductance (Lout1), the first Z-shaped interstage coupling strip line (Z1), surface-pasted 50 ohmage first output port (P2) and earth terminals, wherein, first resonator (L1, C1) is formed in parallel by the first coil (L1) and the first electric capacity (C1), one end of first coil (L1) is connected with one end of the first electric capacity (C1), the other end of the first coil (L1) and the other end of the first electric capacity (C1) ground connection respectively, second resonator (L2, C2) is formed in parallel by the second coil (L2) and the second electric capacity (C2), one end of second coil (L2) is connected with one end of the second electric capacity (C2), the other end of the second coil (L2) and the other end of the second electric capacity (C2) ground connection respectively, 3rd resonator (L3, C3) is formed in parallel by tertiary coil (L3) and the 3rd electric capacity (C3), one end of tertiary coil (L3) is connected with one end of the 3rd electric capacity (C3), the other end of tertiary coil (L3) and the other end of the 3rd electric capacity (C3) ground connection respectively, 4th resonator (L4, C4) is formed in parallel by the 4th coil (L4) and the 4th electric capacity (C4), one end of 4th coil (L4) is connected with one end of the 4th electric capacity (C4), the other end of the 4th coil (L4) and the other end of the 4th electric capacity (C4) ground connection respectively, first coil (L1), the second coil (L2), tertiary coil (L3), the 4th coil (L4) are two-layer square spiral coil structure, and the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4) are double-level-metal plate structure, surface-pasted 50 ohmage first input end mouths (P1) are connected with the first left end inputting inductance (Lin1), the right-hand member of the first input inductance (Lin1) is connected with the first electric capacity (C1) with the first coil (L1), surface-pasted 50 ohmage first output ports (P2) are connected with the right-hand member of the first outputting inductance (Lout1), the left end of the first outputting inductance (Lout1) is connected with the 4th electric capacity (C4) with the 4th coil (L4), first Z-shaped interstage coupling strip line (Z1) is positioned at the first resonator (L1, C1), second resonator (L2, C2), 3rd resonator (L3, C3), 4th resonator (L4, C4) on, second microwave filter (F2) is identical with the first microwave filter (F1) structure, comprises surface-pasted 50 ohmage second input ports (P3), the second input inductance (Lin2), the 5th resonator (L5, C5), sixth resonator (L6, C6), the 7th resonator (L7, C7), the 8th resonator (L8, C8), the second outputting inductance (Lout2), the second Z-shaped interstage coupling strip line (Z2), surface-pasted 50 ohmage second output port (P4) and earth terminals, wherein, 5th resonator (L5, C5) is formed in parallel by the 5th coil (L5) and the 5th electric capacity (C5), one end of 5th coil (L5) is connected with one end of the 5th electric capacity (C5), the other end of the 5th coil (L5) and the other end of the 5th electric capacity (C5) ground connection respectively, sixth resonator (L6, C6) is formed in parallel by the 6th coil (L6) and the 6th electric capacity (C6), one end of 6th coil (L6) is connected with one end of the 6th electric capacity (C6), the other end of the 6th coil (L6) and the other end of the 6th electric capacity (C6) ground connection respectively, 7th resonator (L7, C7) is formed in parallel by the 7th coil (L7) and the 7th electric capacity (C7), one end of 7th coil (L7) is connected with one end of the 7th electric capacity (C7), the other end of the 7th coil (L7) and the other end of the 7th electric capacity (C7) ground connection respectively, 8th resonator (L8, C8) is formed in parallel by the 8th coil (L8) and the 8th electric capacity (C8), one end of 8th coil (L8) is connected with one end of the 8th electric capacity (C8), the other end of the 8th coil (L8) and the other end of the 8th electric capacity (C8) ground connection respectively, 5th coil (L5), the 6th coil (L6), the 7th coil (L7), the 8th coil (L8) are two-layer square spiral coil structure, and the 5th electric capacity (C5), the 6th electric capacity (C6), the 7th electric capacity (C7), the 8th electric capacity (C8) are double-level-metal plate structure, surface-pasted 50 ohmage second input ports (P3) are connected with the second left end inputting inductance (Lin2), the right-hand member of the second input inductance (Lin2) is connected with the 5th electric capacity (C5) with the 5th coil (L5), surface-pasted 50 ohmage second output ports (P4) are connected with the right-hand member of the second outputting inductance (Lout2), the left end of the second outputting inductance (Lout2) is connected with the 8th electric capacity (C8) with the 8th coil (L8), second Z-shaped interstage coupling strip line (Z2) is positioned at the 5th resonator (L5, C5), sixth resonator (L6, C6), 7th resonator (L7, C7), 8th resonator (L8, C8) on.
2. UHF microwave filter group according to claim 1, is characterized in that: surface-pasted 50 ohmage input ports (P1, P3), surface-pasted 50 ohmage output ports (P2, P4), input inductance (Lin1, Lin2), outputting inductance (Lout1, Lout2), electric capacity (C1, C2, C3, C4, C5, C6, C7, C8), coil (L1, L2, L3, L4, L5, L6, L7, L8), Z-shaped interstage coupling strip line (Z1, Z2) and earth terminal all adopt multilayer LTCC technique to realize.
3. UHF waveband micro microwave filter group according to claim 1 and 2, it is characterized in that: first input end mouth (P1) is connected with the first electric capacity (C1) and the first coil (L1) by the first input inductance (Lin1), first output port (P2) is connected with the 4th electric capacity (C4) and the 4th coil (L4) by the first outputting inductance (Lout1), second input port (P3) is connected with the 5th electric capacity (C5) and the 5th coil (L5) by the second input inductance (Lin2), second output port (P4) is connected with the 8th electric capacity (C8) and the 8th coil (L8) by the second outputting inductance (Lout2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553572.7A CN105186077A (en) | 2015-09-01 | 2015-09-01 | Miniature microwave filter bank for ultra high frequency (UHF) wave band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553572.7A CN105186077A (en) | 2015-09-01 | 2015-09-01 | Miniature microwave filter bank for ultra high frequency (UHF) wave band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105186077A true CN105186077A (en) | 2015-12-23 |
Family
ID=54908020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510553572.7A Pending CN105186077A (en) | 2015-09-01 | 2015-09-01 | Miniature microwave filter bank for ultra high frequency (UHF) wave band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105186077A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509824A (en) * | 2011-10-27 | 2012-06-20 | 无锡南理工科技发展有限公司 | Hybrid lumped distribution miniature 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 |
| CN104078729A (en) * | 2014-07-16 | 2014-10-01 | 南京理工大学 | Miniature microwave millimeter wave external load I/Q variable phase inversion orthogonal filter |
| CN104241747A (en) * | 2014-09-13 | 2014-12-24 | 南京理工大学 | Miniature active microwave and millimeter wave I/Q variable phase reversal quadrature filter |
-
2015
- 2015-09-01 CN CN201510553572.7A patent/CN105186077A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509824A (en) * | 2011-10-27 | 2012-06-20 | 无锡南理工科技发展有限公司 | Hybrid lumped distribution miniature 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 |
| CN104078729A (en) * | 2014-07-16 | 2014-10-01 | 南京理工大学 | Miniature microwave millimeter wave external load I/Q variable phase inversion orthogonal filter |
| CN104241747A (en) * | 2014-09-13 | 2014-12-24 | 南京理工大学 | Miniature active microwave and millimeter wave I/Q variable phase reversal quadrature filter |
Non-Patent Citations (1)
| Title |
|---|
| KAIXUE MA 等: "A 11~20GHz Switched Filter Bank for Software Defined Radio System", 《2008 IEEE MTT-S INTERNATIONAL MICROWAVE WORKSHOP SERIES ON ART OF MINIATURIZING RF AND MICROWAVE PASSIVE COMPONENTS》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104241747B (en) | Miniature active microwave and millimeter wave I/Q variable phase reversal quadrature filter | |
| CN104078729B (en) | The outer variable paraphase orthogonal filter of load I/Q of miniature microwave and millimeter wave | |
| CN104953212A (en) | UHF (ultra high frequency) band type miniature microwave filter bank | |
| CN104409806B (en) | Mini active microwave and millimeter wave self-loading I/Q variable phase reversal orthogonal filter | |
| CN104393853A (en) | Multilayer band-pass filter of novel resonance structure | |
| CN104934667A (en) | SHF-waveband minisize microwave filter bank | |
| CN105048048A (en) | L-band microwave self-loading orthogonal power divider | |
| CN104538711A (en) | Miniature microwave and millimeter wave I/Q filter | |
| CN104934666A (en) | SHF-waveband minisize microwave filter bank | |
| CN104979608A (en) | SHF-band micro microwave filter bank | |
| CN104953974A (en) | UHF (ultra high frequency) band type miniature microwave filter bank | |
| CN105048034A (en) | Low temperature co-fired ceramic (LTCC)-based switch type band-pass filter | |
| CN104966879A (en) | Subminiature power divider with built-in absorption resistor | |
| CN103985929A (en) | Miniature high-inhibition modularized bandpass filter | |
| CN104967423A (en) | UHF waveband miniature duplexer | |
| CN105762467A (en) | SHF waveband micro dual-bandpass filter | |
| CN105119584A (en) | UHF band miniature microwave filter group based on LTCC technology | |
| CN104253291A (en) | Novel microwave and millimeter wave broadband filter of strip line structure | |
| CN105428758A (en) | UHF and L waveband miniature duplexer | |
| CN105914436A (en) | Full-lumped and semi-lumped integrated double-frequency filter | |
| CN105140602A (en) | UHF-and-L-waveband micro microwave filter bank | |
| CN105048026A (en) | Miniature 1.4GHz power divider based on three-dimensional integration | |
| CN104091983A (en) | Minitype microwave millimeter wave self-load I/Q variable phase-inversion orthogonal filter | |
| CN104953973A (en) | VHF (very high frequency) &UHF (ultra high frequency) band type miniature microwave filter bank | |
| CN104966870A (en) | UHF wave band high performance filter set based on LTCC technology and DGS technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |