CN105024120A - X wave band and Ku wave band mixing duplex filter - Google Patents
X wave band and Ku wave band mixing duplex filter Download PDFInfo
- Publication number
- CN105024120A CN105024120A CN201510407650.2A CN201510407650A CN105024120A CN 105024120 A CN105024120 A CN 105024120A CN 201510407650 A CN201510407650 A CN 201510407650A CN 105024120 A CN105024120 A CN 105024120A
- Authority
- CN
- China
- Prior art keywords
- strip line
- parallel resonance
- resonance unit
- inductance
- level
- 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
Abstract
The invention relates to an X wave band and Ku wave band mixing duplex filter, and consists of an X wave band microwave filter, a Ku wave band microwave filter and an isolation circuit. Functions of the X wave band and Ku wave band mixing duplex filter are mainly realized through a parallel resonance unit of a strip line structure. The structure of the microwave filter is realized by adoption of LTCC process technology. The X wave band and Ku wave band mixing duplex filter has the advantages of good isolation, small size, resistance to high temperature, low cost, high quality, good stability, high reliability, good material consistency, high yield, good environmental friendliness and the like, and is widely applied to mobile communication and satellite communication of a Beidou navigation system and the like, and systems and equipment having high requirements for electrical properties, material consistency, thermomechanical performance, temperature stability, manufacturability, anti-interference performance and the like.
Description
Technical field
The present invention relates to wave filter technology field, in particular to a kind of X-band and Ku wave band mixing duplexer filter.
Background technology
Along with the fast development of electronic industry, electronic component integration, modularity, high-performance, low cost have become the developing direction of domestic and international RF application, simultaneously along with the rapid raising of electronic device works frequency, the frequency of electromagnetic interference is also more and more higher, can have filter compared with high attenuation to the high-frequency signal of radiated interference in the urgent need to a kind of, this also has higher requirement to the combination property of microwave filter.The leading indicator of this duplexer filter has: pass band insertion loss, passband return loss, squareness factor, delay/frequency characteristic, stopband attenuation, passband voltage standing wave ratio, quality factor etc.Duplexer filter can sponge does not need mixing segment signal, is exported by the signal of required two kinds of different frequency ranges.And its processing technology has many types, what recent domestic adopted mostly is LTCC Technology.
LTCC (LTCC) is the integrated assembly technology that developed recently gets up, and has become the mainstream technology of passive integration, becomes the developing direction in passive component field.It 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 is utilized to prepare plate passive integrated device and module has many advantages, ceramic material has excellent high frequency and high quality characteristic, use the high metal material of conductivity as conductor, be conducive to the quality factor of system, also big current and resistant to elevated temperatures requirement can be adapted to, passive block can be imbedded Mulitilayer circuit board by it, be conducive to improving system assembles density, be easy to realize multilayer wiring and encapsulation integral structure, reliability can be improved, high temperature resistant, the adverse circumstances such as high humidity, adopt the production technology of discontinuous, be convenient to carry out quality testing to every one deck wiring and interconnected through hole before substrate burns till, reduce costs.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 isolation is good, 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, can duplexer filter be realized.
Summary of the invention
The object of the invention is to realize the duplexer filter that a kind of isolation realized by strip lines configuration is good, volume is little, high temperature resistant, low cost, high-quality, good stability, reliability are high, material consistency is good, rate of finished products is high, the feature of environmental protection is good.
Above-mentioned purpose of the present invention is realized by the technical characteristic of independent claims, and dependent claims develops the technical characteristic of independent claims with alternative or favourable mode.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of X-band and Ku wave band mixing duplexer filter, be made up of the microwave filter of X-band and the microwave filter of Ku wave band and inductance capacitance buffer circuit, wherein:
First microwave filter comprises 50 ohmage first input end mouths, the first input inductance, first order parallel resonance unit, second level parallel resonance unit, third level parallel resonance unit, fourth stage parallel resonance unit, level V parallel resonance unit, the first outputting inductance, the first Z-shaped interstage coupling strip line, the first ground capacity, the second ground capacity, 50 ohmage first output port and earth terminals.Parallel resonance unit at different levels forms by two-layer parallel strip line, ground floor is by the first strip line, 3rd strip line, 5th strip line, 7th strip line, 9th strip line composition, the second layer is by the second strip line, 4th strip line, 6th strip line, 8th strip line, tenth strip line composition, wherein, 50 ohmage first input end mouths are connected with first one end inputting inductance, the other end of the first input inductance is connected with the second strip line of the second layer of first order parallel resonance unit, one end of first outputting inductance is connected with the tenth strip line of the second layer of level V parallel resonance unit, 50 ohmage first output ports are connected with the other end of the first outputting inductance, first Z-shaped interstage coupling strip line is positioned at the below of parallel resonance unit, first ground capacity is positioned at the top of first input end mouth.Second ground capacity is positioned at the top of the first output port.Every layer of strip line earth terminal is identical, one end ground connection, and the other end is opened a way, and the second layer is contrary with ground floor earth terminal, the first equal ground connection in Z-shaped interstage coupling strip line two ends, the first ground capacity, one end ground connection, open a way in one end, second ground capacity, one end ground connection, opens a way in one end.
Second microwave filter comprises 50 ohmage second input ports, the second input inductance, first order parallel resonance unit, second level parallel resonance unit, third level parallel resonance unit, fourth stage parallel resonance unit, level V parallel resonance unit, the second outputting inductance, the second Z-shaped interstage coupling strip line, the 3rd ground capacity, the 4th ground capacity, 50 ohmage second output port and earth terminals.Parallel resonance unit at different levels forms by two-layer parallel strip line, ground floor is by the 11 strip line, 13 strip line, 15 strip line, 17 strip line, 19 strip line composition, the second layer is by the 12 strip line, 14 strip line, 16 strip line, 18 strip line, 20 strip line composition, wherein, 50 ohmage second input ports are connected with second one end inputting inductance, 12 strip line of the second layer of first order parallel resonance unit is connected with second other end inputting inductance, 20 strip line of the second layer of level V parallel resonance unit is connected with one end of the second outputting inductance, 50 ohmage second output ports are connected with the other end of the second outputting inductance, second Z-shaped interstage coupling strip line is positioned at the below of parallel resonance unit, 3rd ground capacity is positioned at the top of the second input inductance, 4th ground capacity is positioned at the top of the second outputting inductance.Every layer of strip line earth terminal is identical, one end ground connection, and the other end is opened a way, the second layer is contrary with ground floor earth terminal, the second equal ground connection in Z-shaped interstage coupling strip line two ends, the 3rd ground capacity, one end ground connection, open a way in one end, 4th ground capacity, one end ground connection, open a way in one end, the inductance end of inductance capacitance buffer circuit is connected with the first input end mouth (P1) of the first filter, and capacitance terminal is connected with second input port (P3) of the second filter.
LTCC is processing technology of the present invention, and the consistency that it possesses is good, precision is high, volume is little, cost is low, reliability is high, temperature stability is good, electrical property advantages of higher is not available for other processing technologys.
As long as should be appreciated that aforementioned concepts and all combinations of extra design described in further detail below can be regarded as a part for subject matter of the present disclosure when such design is not conflicting.In addition, all combinations of theme required for protection are all regarded as a part for subject matter of the present disclosure.
The foregoing and other aspect of the present invention's instruction, embodiment and feature can be understood by reference to the accompanying drawings from the following description more all sidedly.Feature and/or the beneficial effect of other additional aspect of the present invention such as illustrative embodiments will be obvious in the following description, or by learning in the practice of the embodiment according to the present invention's instruction.
Accompanying drawing explanation
Accompanying drawing is not intended to draw in proportion.In the accompanying drawings, each identical or approximately uniform part illustrated in each figure can represent with identical label.For clarity, in each figure, not each part is all labeled.Now, the embodiment of various aspects of the present invention also will be described with reference to accompanying drawing by example, wherein:
Fig. 1 (a) is the X-band of certain embodiments of the invention and the contour structures schematic diagram of Ku wave band mixing duplexer filter.
Fig. 1 (b) is profile and the internal structure schematic diagram of the X-band of certain embodiments of the invention and the first microwave filter of Ku wave band mixing duplexer filter.
Fig. 1 (c) is profile and the internal structure schematic diagram of the X-band of certain embodiments of the invention and the second microwave filter of Ku wave band mixing duplexer filter.
Fig. 2 is the X-band of certain embodiments of the invention and the first output port of Ku wave band mixing duplexer filter and the amplitude-versus-frequency curve of the second output port.
Fig. 3 is the return loss plot of the X-band of certain embodiments of the invention and the input port of Ku wave band mixing duplexer filter.
Embodiment
In order to more understand technology contents of the present invention, institute's accompanying drawings is coordinated to be described as follows especially exemplified by specific embodiment.
Each side with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations.Embodiment of the present disclosure must not be intended to comprise all aspects of the present invention.Be to be understood that, multiple design presented hereinbefore and embodiment, and those designs described in more detail below and execution mode can in many ways in any one is implemented, this should be design disclosed in this invention and embodiment is not limited to any execution mode.In addition, aspects more disclosed by the invention can be used alone, or otherwisely anyly appropriately combinedly to use with disclosed by the invention.
Composition graphs 1 (a), (b), (c), a kind of X-band of the present invention and Ku wave band mixing duplexer filter, first microwave filter (F1) of this duplexer filter, the i.e. microwave filter of X-band, comprise 50 ohmage first input end mouths (P1), first input inductance (Lin1), first order parallel resonance unit is (by L11, L21 is formed), second level parallel resonance unit is (by L12, L22 is formed), third level parallel resonance unit is (by L13, L23 is formed), fourth stage parallel resonance unit is (by L14, L24 is formed), level V parallel resonance unit is (by L15, L25 is formed), first outputting inductance (Lout1), first Z-shaped interstage coupling strip line (Z1), first ground capacity (C1), second ground capacity (C2), 50 ohmage first output port (P2) and earth terminals.
Parallel resonance unit at different levels forms by two-layer parallel strip line, ground floor is made up of the first strip line (L11), the 3rd strip line (L12), the 5th strip line (L13), the 7th strip line (L14), the 9th strip line (L15), and the second layer is made up of the second strip line (L21), the 4th strip line (L22), the 6th strip line (L23), the 8th strip line (L24), the tenth strip line (L25).
Wherein, 50 ohmage first input end mouths (P1) are connected with first one end inputting inductance (Lin1), the other end of the first input inductance (Lin1) and first order parallel resonance unit (L11, second strip line (L21) of the second layer L21) connects, one end of first outputting inductance (Lout1) and level V parallel resonance unit (L15, tenth strip line (L25) of the second layer L25) connects, the other end of the first outputting inductance (Lout1) is connected with 50 ohmage first output ports (P2), first Z-shaped interstage coupling strip line (Z1) is positioned at the below of parallel resonance unit, first ground capacity (C1) is positioned at the top of the first input inductance (Lin1), second ground capacity (C2) is positioned at the top of the first outputting inductance (Lout1).
Every layer of strip line earth terminal is identical, one end ground connection, the other end is opened a way, and the second layer is contrary with ground floor earth terminal, the first equal ground connection in Z-shaped interstage coupling strip line (Z1) two ends, first ground capacity (C1), one end ground connection, open a way in one end, the second ground capacity (C2), one end ground connection, opens a way in one end.
Second microwave filter (F2), the i.e. microwave filter of Ku wave band, comprise 50 ohmage second input ports (P3), second input inductance (Lin2), first order parallel resonance unit is (by L31, L41 is formed), second level parallel resonance unit is (by L32, L42 is formed), third level parallel resonance unit is (by L33, L43 is formed), fourth stage parallel resonance unit is (by L34, L44 is formed), level V parallel resonance unit is (by L35, L45 is formed), second outputting inductance (Lout2), second Z-shaped interstage coupling strip line (Z2), 3rd ground capacity (C3), 4th ground capacity (C4), 50 ohmage second output port (P4) and earth terminals.
Parallel resonance unit at different levels forms by two-layer parallel strip line, ground floor is made up of the 11 strip line (L31), the 13 strip line (L32), the 15 strip line (L33), the 17 strip line (L34), the 19 strip line (L35), and the second layer is made up of the 12 strip line (L41), the 14 strip line (L42), the 16 strip line (L43), the 18 strip line (L44), the 20 strip line (L45).
Wherein, 50 ohmage second input ports (P3) are connected with second one end inputting inductance (Lin2), the other end of the second input inductance (Lin2) and first order parallel resonance unit (L31, 12 strip line (L41) of the second layer L41) connects, one end of second outputting inductance (Lout2) and level V parallel resonance unit (L35, 20 strip line (L45) of the second layer L45) connects, 50 ohmage second output ports (P4) are connected with the other end of the second outputting inductance (Lout2), second Z-shaped interstage coupling strip line (Z2) is positioned at the below of parallel resonance unit, 3rd ground capacity (C3) is positioned at the top of the second input inductance (Lin2), 4th ground capacity (C4) is positioned at the top of the second outputting inductance (Lout2).
Every layer of strip line earth terminal is identical, one end ground connection, the other end is opened a way, and the second layer is contrary with ground floor earth terminal, the second equal ground connection in Z-shaped interstage coupling strip line (Z2) two ends, 3rd ground capacity (C3), one end ground connection, open a way in one end, the 4th ground capacity (C4), one end ground connection, opens a way in one end.The inductance end of inductance capacitance buffer circuit is connected with the first input end mouth (P1) of the first filter, and capacitance terminal is connected with second input port (P3) of the second filter.
Composition graphs 1 (a), (b), (c), 50 ohmage input port (P1, P3), 50 ohmage output port (P2, P4), input inductance (Lin1, Lin2), outputting inductance (Lout1, Lout2), ground capacity (C1, C2, C3, C4), first order parallel resonance unit (L11, L21, L31, L41), second level parallel resonance unit (L12, L22, L32, L42), third level parallel resonance unit (L13, L23, L33, L43), fourth stage parallel resonance unit (L14, L24, L34, L44), level V parallel resonance unit (L15, L25, L35, L45), Z-shaped interstage coupling strip line (Z1, Z2) and earth terminal all adopt multilayer LTCC technique to realize.
A kind of X-band and Ku wave band mixing duplexer filter, owing to adopting multilayer LTCC technique to realize, so have very high temperature stability, consistency, and have the green tape of some strength.Because structure adopts, 3 D stereo is integrated to be grounded with multilayer folding structure and outer surface metallic shield and to encapsulate.
In a kind of X-band of the present invention and Ku wave band mixing duplexer filter, the size of two microwave filters is 3.2mm × 3.2mm × 1.5mm.Its performance can be found out from Fig. 2, Fig. 3, the free transmission range of the first microwave filter is 9.5GHz ~ 12GHz, input port return loss reaches 18dB, output port insertion loss reaches 1.9dB, the free transmission range of the second microwave filter is 14.5GHz ~ 16GHz, input port return loss reaches 10dB, and output port insertion loss reaches 1.35dB.
Although the present invention with preferred embodiment disclose as above, so itself and be not used to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (2)
1. X-band and a Ku wave band mixing duplexer filter, is characterized in that, be made up of the microwave filter of X-band and the microwave filter of Ku wave band and inductance capacitance buffer circuit, wherein:
The microwave filter of described X-band is configured to the first microwave filter (F1) and comprises 50 ohmage first input end mouths (P1), first input inductance (Lin1), first order parallel resonance unit, second level parallel resonance unit, third level parallel resonance unit, fourth stage parallel resonance unit, level V parallel resonance unit, first outputting inductance (Lout1), first Z-shaped interstage coupling strip line (Z1), first ground capacity (C1), second ground capacity (C2), 50 ohmage first output port (P2) and earth terminals, described first order parallel resonance unit is made up of the first strip line L11 and the second strip line L21, second level parallel resonance unit is by the 3rd strip line (L12), 4th strip line (L22) is formed, third level parallel resonance unit is by the 5th strip line (L13), 6th shape line (L23) is formed, fourth stage parallel resonance unit is by the 7th strip line (L14), 8th strip line (L24) is formed, level V parallel resonance unit is by the 9th strip line (L15), tenth strip line (L25) is formed,
Parallel resonance unit at different levels forms by two-layer parallel strip line, and ground floor is made up of the first strip line (L11), the 3rd strip line (L12), the 5th strip line (L13), the 7th strip line (L14), the 9th strip line (L15);
The second layer is made up of the second strip line (L21), the 4th strip line (L22), the 6th strip line (L23), the 8th strip line (L24), the tenth strip line (L25)
Wherein, one end that the first input end mouth (P1) and first of 50 ohmages inputs inductance (Lin1) is connected, the other end of the first input inductance (Lin1) is connected with the second strip line (L21), one end of first outputting inductance (Lout1) is connected with the tenth strip line (L25), the other end of the first outputting inductance (Lout1) is connected with first output port (P2) of 50 ohmages, first Z-shaped interstage coupling strip line (Z1) is positioned at the below of parallel resonance unit, first ground capacity (C1) is positioned at the top of the first input inductance (Lin1), second ground capacity (C2) is positioned at the top of the first outputting inductance (Lout1),
Every layer of strip line earth terminal is identical, one end ground connection, the other end is opened a way, and the second layer is contrary with ground floor earth terminal, the first equal ground connection in Z-shaped interstage coupling strip line (Z1) two ends, first ground capacity (C1), one end ground connection, open a way in one end, the second ground capacity (C2), one end ground connection, open a way in one end;
Input signal through inductive transmission to first input end mouth (P1), the second strip line (L21) is transferred to via the first input inductance (Lin1), through first order parallel resonance unit, second level parallel resonance unit, third level parallel resonance unit, fourth stage parallel resonance unit, level V parallel resonance unit, first Z-shaped interstage coupling strip line (Z1), first ground capacity (C1), the electromagnetic coupled of the second ground capacity (C2), be transferred to the tenth strip line (L25), via the first outputting inductance (Lout1), export at the first output port (P2),
The microwave filter of described Ku wave band is configured to the second microwave filter (F2), it comprises 50 ohmage second input ports (P3), second input inductance (Lin2), first order parallel resonance unit, second level parallel resonance unit, third level parallel resonance unit, fourth stage parallel resonance unit, level V parallel resonance unit, second outputting inductance (Lout2), second Z-shaped interstage coupling strip line (Z2), 3rd ground capacity (C3), 4th ground capacity (C4), 50 ohmage second output port (P4) and earth terminals, first order parallel resonance unit is by the 11 strip line (L31), 12 strip line (L41) is formed, second level parallel resonance unit is by the 13 strip line (L32), 14 strip line (L42) is formed, third level parallel resonance unit is by the 15 strip line (L33), 16 strip line (L43) is formed, fourth stage parallel resonance unit is by the 17 strip line (L34), 18 strip line (L44) is formed, level V parallel resonance unit is by the 19 strip line (L35), 20 strip line (L45) is formed,
Parallel resonance unit at different levels forms by two-layer parallel strip line, and ground floor is made up of the 11 strip line (L31), the 13 strip line (L32), the 15 strip line (L33), the 17 strip line (L34), the 19 strip line (L35);
The second layer is made up of the 12 strip line (L41), the 14 strip line (L42), the 16 strip line (L43), the 18 strip line (L44), the 20 strip line (L45);
Wherein, one end that second input port (P3) and second of 50 ohmages inputs inductance (Lin2) is connected, the other end of the second input inductance (Lin2) is connected with the 12 strip line (L41), 20 strip line (L45) is connected with one end of the second outputting inductance (Lout2), second output port (P4) of 50 ohmages is connected with the other end of the second outputting inductance (Lout2), second Z-shaped interstage coupling strip line (Z2) is positioned at the below of parallel resonance unit, 3rd ground capacity (C3) is positioned at the top of the second input inductance (Lin2), 4th ground capacity (C4) is positioned at the top of the second outputting inductance (Lout2),
Every layer of strip line earth terminal is identical, one end ground connection, the other end is opened a way, and the second layer is contrary with ground floor earth terminal, the second equal ground connection in Z-shaped interstage coupling strip line (Z2) two ends, 3rd ground capacity (C3), one end ground connection, open a way in one end, the 4th ground capacity (C4), one end ground connection, opens a way in one end.The inductance end of inductance capacitance buffer circuit is connected with the first input end mouth (P1) of the first filter, and capacitance terminal is connected with second input port (P3) of the second filter;
Input signal through capacitive transmission to the second input port (P3), the 12 strip line (L41) is transferred to via the second input inductance (Lin2), through first order parallel resonance unit, second level parallel resonance unit, third level parallel resonance unit, fourth stage parallel resonance unit, level V parallel resonance unit, second Z-shaped interstage coupling strip line (Z2), 3rd ground capacity (C3), the electromagnetic coupled of the 4th ground capacity (C4), be transferred to the 20 strip line (L45), via the second outputting inductance (Lout2), export at the second output port (P4).
2. X-band according to claim 1 and Ku wave band mixing duplexer filter, it is characterized in that, described each 50 ohmage input port (P1, P3), 50 ohmage output port (P2, P4), input inductance (Lin1, Lin2), outputting inductance (Lout1, Lout2), first order parallel resonance unit (L11, L21, L31, L41), second level parallel resonance unit (L12, L22, L32, L42), third level parallel resonance unit (L13, L23, L33, L43), fourth stage parallel resonance unit (L14, L24, L34, L44), level V parallel resonance unit (L15, L25, L35, L45), Z-shaped interstage coupling strip line (Z1, Z2), ground capacity (C1, C2, C3, C4) and earth terminal all adopt LTCC technique to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510407650.2A CN105024120A (en) | 2015-07-13 | 2015-07-13 | X wave band and Ku wave band mixing duplex filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510407650.2A CN105024120A (en) | 2015-07-13 | 2015-07-13 | X wave band and Ku wave band mixing duplex filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105024120A true CN105024120A (en) | 2015-11-04 |
Family
ID=54413924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510407650.2A Pending CN105024120A (en) | 2015-07-13 | 2015-07-13 | X wave band and Ku wave band mixing duplex filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105024120A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099265A (en) * | 2016-06-01 | 2016-11-09 | 南京理工大学 | SHF wave band duplexer filter |
| CN106129556A (en) * | 2016-08-28 | 2016-11-16 | 戴永胜 | A kind of cutting back line style LTCC ultra wide band bandpass filter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621145A (en) * | 2009-08-11 | 2010-01-06 | 南京理工大学 | L wave band miniature band pass filter with low loss and high suppression |
| 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 |
| 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 |
| CN103413993A (en) * | 2013-08-01 | 2013-11-27 | 南京理工大学 | Distributed miniature band-pass balance filter |
| CN104953210A (en) * | 2015-07-13 | 2015-09-30 | 南京理工大学 | X band and Ku band mixing duplex filter |
-
2015
- 2015-07-13 CN CN201510407650.2A patent/CN105024120A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621145A (en) * | 2009-08-11 | 2010-01-06 | 南京理工大学 | L wave band miniature band pass filter with low loss and high suppression |
| 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 |
| 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 |
| CN103413993A (en) * | 2013-08-01 | 2013-11-27 | 南京理工大学 | Distributed miniature band-pass balance filter |
| CN104953210A (en) * | 2015-07-13 | 2015-09-30 | 南京理工大学 | X band and Ku band mixing duplex filter |
Non-Patent Citations (1)
| Title |
|---|
| 张杰: "《微型LTCC双频滤波器的研究》", 《信息科技辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099265A (en) * | 2016-06-01 | 2016-11-09 | 南京理工大学 | SHF wave band duplexer filter |
| CN106129556A (en) * | 2016-08-28 | 2016-11-16 | 戴永胜 | A kind of cutting back line style LTCC ultra wide band bandpass filter |
| CN106129556B (en) * | 2016-08-28 | 2020-06-02 | 深圳波而特电子科技有限公司 | Short-section line type LTCC ultra-wideband band-pass filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103413993B (en) | Distributed type minisize band leads to balance filter | |
| CN104241747B (en) | Miniature active microwave and millimeter wave I/Q variable phase reversal quadrature filter | |
| CN104409802B (en) | The self-supported I/Q orthogonal filters of miniature microwave and millimeter wave | |
| CN104733814A (en) | Miniature dual microwave and millimeter wave self-load I/Q quadrature filter | |
| CN104377406A (en) | Microwave millimeter wave self-loading multi-orthogonal filter capable of inverting phase | |
| CN104409806A (en) | Mini active microwave and millimeter wave self-loading I/Q variable phase reversal orthogonal filter | |
| CN104953212A (en) | UHF (ultra high frequency) band type miniature microwave filter bank | |
| CN104953210A (en) | X band and Ku band mixing duplex filter | |
| CN104934667A (en) | SHF-waveband minisize microwave filter bank | |
| CN104538711A (en) | Miniature microwave and millimeter wave I/Q filter | |
| CN105048048A (en) | L-band microwave self-loading orthogonal power divider | |
| CN104934665A (en) | Ultrahigh frequency wave band selective microwave filter bank | |
| CN104201446B (en) | Microwave millimeter-wave external-load multi-orthogonal inverse filter | |
| CN105024120A (en) | X wave band and Ku wave band mixing duplex filter | |
| CN104979608A (en) | SHF-band micro microwave filter bank | |
| CN104934666A (en) | SHF-waveband minisize microwave filter bank | |
| CN104953209A (en) | Ultrahigh frequency band type LTCC (low temperature co-fired ceramic) duplex filter | |
| CN104953213A (en) | SHF (superhigh frequency) band type miniature duplexer | |
| CN105006618A (en) | LTCC-and-DGS-based miniature multi-path filter set | |
| CN105070988A (en) | S-waveband power dividing filter based on low-temperature co-fired ceramic (LTCC) | |
| CN104966875A (en) | Microwave millimeter wave active balance filtering power divider | |
| CN104967424A (en) | UHF and SHF waveband miniature duplexer | |
| CN104967423A (en) | UHF waveband miniature duplexer | |
| CN104409805A (en) | Miniature double microwave and millimeter-wave I/Q orthogonal filter | |
| CN205564923U (en) | Miniature microwave diplexer of SHF wave band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dai Yongsheng Inventor after: Li Bowen Inventor after: Pan Hang Inventor after: Liu Yi Inventor after: Chen Ye Inventor after: Qiao Dongchun Inventor after: Zhang Chao Inventor before: Li Bowen Inventor before: Pan Hang Inventor before: Dai Yongsheng Inventor before: Liu Yi Inventor before: Chen Ye Inventor before: Qiao Dongchun Inventor before: Zhang Chao |
|
| COR | Change of bibliographic data | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |
|
| WD01 | Invention patent application deemed withdrawn after publication |