CN105958163A - LS wave band and C wave band double-frequency diplexer filter - Google Patents
LS wave band and C wave band double-frequency diplexer filter Download PDFInfo
- Publication number
- CN105958163A CN105958163A CN201610382459.1A CN201610382459A CN105958163A CN 105958163 A CN105958163 A CN 105958163A CN 201610382459 A CN201610382459 A CN 201610382459A CN 105958163 A CN105958163 A CN 105958163A
- Authority
- CN
- China
- Prior art keywords
- strip line
- parallel resonance
- resonance unit
- inductance
- wave band
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
Abstract
The invention discloses an LS wave band and C wave band double-frequency diplexer filter. The LS wave band and C wave band double-frequency diplexer filter is formed by an LS wave band microwave filter, a C wave band microwave filter and an inductor-capacitor. The function of the LS wave band and C wave band double-frequency diplexer filter is mainly implemented by parallel connection of distributed filters with a strip line structure. The diplexer filter structure is implemented through an LTCC technology. The LS wave band and C wave band double-frequency diplexer filter has the advantages of being small in volume, being high temperature resistant, being low in cost, being high in quality, being high in stability, being high in reliability, being high in material consistency, being high in yield and being high environmental protection property, and is widely applied to mobile communication of the microwave frequency range, and satellite communication, such as a Beidou navigation system, and systems and equipment having high requirement for electrical property, material consistency, heat mechanical property, temperature stability, manufacturability and interference immunity.
Description
Technical field
The present invention relates to double frequency filter, specifically a kind of LS wave band and C-band two-frequency duplex wave filter.
Background technology
Fast development along with electronic industry, electronic component integration, modularity, high-performance, low cost have become as 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 more and more higher, in the urgent need to a kind of wave filter that can have greater attenuation to the high-frequency signal of radiation interference, the combination property of microwave filter is also had higher requirement by this.In wireless emitting-receiving system, if configuring antenna to transmitter and receiver circuit respectively, not only bad for cost-effective, and the interference between signal can be increased, but duplexer be designed to play the frequency-selecting effect of wave filter, it is also possible to complete the function of different branch duplex communication.The referring mainly to of this duplexer filter indicates: pass band insertion loss, passband return loss, isolation, squareness factor, delay/frequency characteristic, stopband attenuation, passband voltage standing wave ratio, quality factor etc..Duplexer filter can sponge and need not be mixed segment signal, is exported by the signal of two kinds of required different frequency ranges.The design solves the defects such as the return loss of duplexer is big, stopband attenuation is little, and its processing technique has many types, and recent domestic uses LTCC Technology mostly.
LTCC (LTCC) is the integrated assembly technology that developed recently gets up, and has become as the mainstream technology of passive integration, becomes the developing direction in passive element field.It uses multi-layer ceramics technology, it is possible to be built in by passive element inside medium substrate, and active component can also be mounted on substrate surface makes passive/active integrated functional module simultaneously.Utilize LTCC to prepare plate passive integrated device and module has many advantages, ceramic material has excellent high frequency and high quality characteristic, use the metal material that electrical conductivity is high as conductor, be conducive to the quality factor of system, also big electric current and resistant to elevated temperatures requirement it are suitable for, passive block can be imbedded Mulitilayer circuit board by it, be conducive to improving system assembles density, it is easily achieved multilayer wiring and encapsulation integral structure, reliability can be improved, high temperature resistant, the adverse circumstances such as high humidity, use the production technology of discontinuous, it is easy to before substrate burns till each layer of wiring and mutual linked hole are carried out quality testing, reduce cost.Owing to LTCC technology has the integrated advantage of 3 D stereo, it is widely used for manufacturing various microwave passive components at microwave frequency band, it is achieved passive element highly integrated.Stack technology based on LTCC technique, can realize three-dimensionally integrated, so that various micro microwave filters have, size is little, lightweight, performance is excellent, reliability is high, performance concordance is good and the plurality of advantages such as low cost in batch production, utilize its three-dimensionally integrated construction features, it is possible to achieve duplexer filter.
Summary of the invention
It is an object of the invention to realize a kind of realized the duplexer filter that isolation is good, volume is little, high temperature resistant, low cost, high-quality, good stability, reliability high, material concordance is good, yield rate is high, the feature of environmental protection is good by strip lines configuration.
The technical scheme realizing the object of the invention is: a kind of LS wave band and C-band two-frequency duplex wave filter, its concrete structure is as follows: its structure is made up of with inductance capacitance the first microwave filter, the second microwave filter, the first input port of inductance and the first microwave filter connects, and the second input port of electric capacity and the second microwave filter connects.
First microwave filter includes 50 ohmage first input port, the first input inductance, first order parallel resonance unit, second level parallel resonance unit, third level parallel resonance unit, fourth stage parallel resonance unit, the first outputting inductance, 50 ohmage the first output ports, the first Z-shaped interstage coupling strip line, the second Z-shaped interstage coupling strip line and earth terminal.Parallel resonance unit at different levels are successively from while rearranging to another side with certain spacing, parallel resonance unit at different levels are formed by three layers of parallel strip line, resonant element levels spacing at different levels are equal, ground floor is by the first strip line, the 4th strip line, the 7th strip line, the tenth strip line successively from while rearranging to another side with certain spacing, and the distance between the first strip line and the 4th strip line is equal with the distance between the 7th strip line and the tenth strip line.The second layer is by the second strip line, the 5th strip line, the 8th strip line, the 11st strip line successively from while rearranging to another side with certain spacing, and the distance between the second strip line and the 5th strip line is equal with the distance between the 8th strip line and the 11st strip line.Third layer is by the 3rd strip line, the 6th strip line, the 9th strip line, the 12nd strip line successively from while rearranging to another side with certain spacing, and the distance between the 3rd strip line and the 6th strip line is equal with the distance between the 9th strip line and the 12nd strip line.
Wherein, 50 ohmage first input port are connected with first input inductance one end, the other end of the second strip line of the second layer of first order parallel resonance unit and the first input inductance connects, 11st strip line of the second layer of fourth stage level parallel resonance unit and first outputting inductance one end connect, the other end of the first outputting inductance and 50 ohmage the first output ports connect, first Z-shaped interstage coupling strip line is positioned at the lower section of parallel resonance unit, and the second Z-shaped interstage coupling strip line is positioned at the top of parallel resonance unit.
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 and first and third layer of earth terminal are contrary, the first equal ground connection in Z-shaped interstage coupling strip line two ends, the second equal ground connection in Z-shaped interstage coupling strip line two ends.
Second microwave filter includes 50 ohmage the 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, the second outputting inductance, the 3rd Z-shaped interstage coupling strip line, 50 ohmage the second output port and earth terminals.Parallel resonance unit at different levels are successively from while rearranging to another side with certain spacing, parallel resonance unit at different levels are formed by two-layer parallel strip line, resonant element levels spacing at different levels are equal, ground floor is by the 13rd strip line, the 15th strip line, the 17th strip line, the 19th strip line successively from while rearranging to another side with certain spacing, and the distance between the 13rd strip line and the 15th strip line is equal with the distance between the 17th strip line and the 19th strip line.The second layer is by the 14th strip line, the 16th strip line, the 18th strip line, the 20th strip line successively from while rearranging to another side with certain spacing, and the distance between the 14th strip line and the 16th strip line is equal with the distance between the 18th strip line and the 20th strip line.
Wherein, one end of second input port of 50 ohmages and the second input inductance connects, the other end and the 14th strip line of the second input inductance connect, one end of 20th strip line and the second outputting inductance connects, second output port of 50 ohmages and the other end of the second outputting inductance connect, and the 3rd Z-shaped interstage coupling strip line is positioned at the lower section of parallel resonance unit.
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 3rd equal ground connection in Z-shaped interstage coupling strip line two ends.
LTCC is processing technique of the present invention, and the concordance that it is possessed is good, precision is high, volume is little, low cost, reliability high, temperature stability is good, electrical property advantages of higher is not available for other processing technique.
The present invention is compared with prior art, its remarkable advantage is: the present invention has the advantages such as volume is little, high temperature resistant, low cost, high-quality, good stability, reliability high, material concordance is good, yield rate is high, the feature of environmental protection is good, can be widely applied to the satellite communications such as the mobile communication of microwave frequency band, triones navigation system, system and the equipment to high requests such as electrical property, material concordance, hot mechanicalness, temperature stability, manufacturability and anti-interferences.
Accompanying drawing explanation
Fig. 1 (a) is the contour structures schematic diagram of the present invention a kind of LS wave band and C-band two-frequency duplex wave filter；Fig. 1 (b) is the first microwave filter internal structure schematic diagram of the present invention a kind of LS wave band and C-band two-frequency duplex wave filter；Fig. 1 (c) is the second microwave filter internal structure schematic diagram of the present invention a kind of LS wave band and C-band two-frequency duplex wave filter.
Fig. 2 is the present invention a kind of LS wave band and the first output port of C-band two-frequency duplex wave filter and the amplitude-versus-frequency curve of the second output port.
Fig. 3 is the return loss plot of the present invention a kind of LS wave band and the input port of C-band two-frequency duplex wave filter.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
In conjunction with Fig. 1 (a), (b), (c), one LS wave band of the present invention and C-band two-frequency duplex wave filter, first microwave filter (F1) of this duplexer filter includes 50 ohmage first input port (P1), first input inductance (Lin1), first order parallel resonance unit (L11, L21, L31), second level parallel resonance unit (L12, L22, L32), third level parallel resonance unit (L13, L23, L33), fourth stage parallel resonance unit (L14, L24, L34), first outputting inductance (Lout1), 50 ohmages the first output port (P2), first Z-shaped interstage coupling strip line (Z1), second Z-shaped interstage coupling strip line (Z2) and earth terminal.
Parallel resonance unit at different levels are successively from while rearranging to another side with certain spacing, parallel resonance unit at different levels are formed by three layers of parallel strip line, resonant element levels spacing at different levels are equal, ground floor is by the first strip line (L11), the 4th strip line (L12), the 7th strip line (L13), the tenth strip line (L14) successively from while rearranging to another side with certain spacing, and the distance between the first strip line (L11) with the 4th strip line (L12) is equal with the distance between the 7th strip line (L13) and the tenth strip line (L14).
The second layer is by the second strip line (L21), the 5th strip line (L22), the 8th strip line (L23), the 11st strip line (L24) successively from while rearranging to another side with certain spacing, and the distance between the second strip line (L21) with the 5th strip line (L22) is equal with the distance between the 8th strip line (L23) and the 11st strip line (L24).
Third layer is by the 3rd strip line (L31), the 6th strip line (L32), the 9th strip line (L33), the 12nd strip line (L34) successively from while rearranging to another side with certain spacing, and the distance between the 3rd strip line (L31) and the 6th strip line (L32) is equal with the distance between the 9th strip line (L33) and the 12nd strip line (L34).
Wherein, 50 ohmage first input port (P1) are connected with first input inductance (Lin1) one end, first order parallel resonance unit (L11, L21, second strip line (L21) of the second layer L31) is connected with first input inductance (Lin1) other end, fourth stage level parallel resonance unit (L14, L24, 11st strip line (L24) of the second layer L34) is connected with the first outputting inductance (Lout1) one end, the other end of the first outputting inductance (Lout1) and 50 ohmages the first output port (P2) connect, first Z-shaped interstage coupling strip line (Z1) is positioned at the lower section of parallel resonance unit, second Z-shaped interstage coupling strip line (Z2) is positioned at the top of parallel resonance unit.
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 and first and third layer of earth terminal are contrary, the first equal ground connection in Z-shaped interstage coupling strip line (Z1) two ends, the second equal ground connection in Z-shaped interstage coupling strip line (Z2) two ends.
Second microwave filter (F2) includes 50 ohmages the second input port (P3), the second input inductance (Lin2), first order parallel resonance unit (L41, L51), second level parallel resonance unit (L42, L52), third level parallel resonance unit (L43, L53), fourth stage parallel resonance unit (L44, L54), the second outputting inductance (Lout2), the 3rd Z-shaped interstage coupling strip line (Z3), 50 ohmage the second output port (P4) and earth terminals.
Parallel resonance unit at different levels are successively from while rearranging to another side with certain spacing, parallel resonance unit at different levels are formed by two-layer parallel strip line, resonant element levels spacing at different levels are equal, ground floor is by the 13rd strip line (L41), 15th strip line (L42), 17th strip line (L43), 19th strip line (L44) is successively from while rearranging to another side with certain spacing, distance between 13rd strip line (L41) and the 15th strip line (L42) is equal with the distance between the 17th strip line (L43) and the 19th strip line (L44).
The second layer is by the 14th strip line (L51), the 16th strip line (L52), the 18th strip line (L53), the 20th strip line (L54) successively from while rearranging to another side with certain spacing, and the distance between the 14th strip line (L51) and the 16th strip line (L52) is equal with the distance between the 18th strip line (L53) and the 20th strip line (L54).
Wherein, second input port (P3) of 50 ohmages is connected with one end of the second input inductance (Lin2), the other end and the 14th strip line (L51) of the second input inductance (Lin2) connect, 20th strip line (L54) 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), and the 3rd Z-shaped interstage coupling strip line (Z3) is positioned at the lower section of parallel resonance unit.
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 3rd equal ground connection in Z-shaped interstage coupling strip line (Z3) two ends.The first input port (P1) of inductance and the first wave filter is connected, and second input port (P3) of electric capacity and the second wave filter is connected.
In conjunction with Fig. 1 (a), (b), (c), 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, L51), second level parallel resonance unit (L12, L22, L32, L42, L52), third level parallel resonance unit (L13, L23, L33, L43, L53), fourth stage parallel resonance unit (L14, L24, L34, L44, L54), Z-shaped interstage coupling strip line (Z1, Z2, and earth terminal all uses multilamellar LTCC technique to realize Z3).
A kind of LS wave band and C-band two-frequency duplex wave filter, owing to using multilamellar LTCC technique to realize, so having the highest temperature stability, concordance, and also have the green tape of some strength.Owing to structure uses, 3 D stereo is integrated to be grounded with multilayer folding structure and outer surface metallic shield and encapsulates so that cost is preferably minimized.
The present invention a kind of LS wave band is 2.5mm × 3.2mm × 1.5mm with the size of two microwave filters in C-band two-frequency duplex wave filter.Its performance can be found out from Fig. 2, Fig. 3, the free transmission range of the first microwave filter is 1.9GHz ~ 2.15GHz, input port return loss reaches 12dB, output port insertion loss reaches 2.34dB, the free transmission range of the second microwave filter is 4.5GHz ~ 5GHz, input port return loss reaches 24dB, and output port insertion loss reaches 2dB.
Claims (2)
1. a LS wave band and C-band two-frequency duplex wave filter, it is characterized in that: be made up of the first microwave filter (F1), the second microwave filter (F2), inductance, electric capacity, the first input port (P1) of inductance and the first microwave filter (F1) connects, and second input port (P3) of electric capacity and the second microwave filter (F2) connects；
First microwave filter (F1) includes 50 ohmage first input port (P1), first input inductance (Lin1), first order parallel resonance unit (L11, L21, L31), second level parallel resonance unit (L12, L22, L32), third level parallel resonance unit (L13, L23, L33), fourth stage parallel resonance unit (L14, L24, L34), first outputting inductance (Lout1), 50 ohmages the first output port (P2), first Z-shaped interstage coupling strip line (Z1), second Z-shaped interstage coupling strip line (Z2) and earth terminal；
Parallel resonance unit at different levels are successively from while rearranging to another side with certain spacing, parallel resonance unit at different levels are formed by three layers of parallel strip line, resonant element levels spacing at different levels are equal, ground floor is by the first strip line (L11), the 4th strip line (L12), the 7th strip line (L13), the tenth strip line (L14) successively from while rearranging to another side with certain spacing, and the distance between the first strip line (L11), the 4th strip line (L12) is equal with the distance between the 7th strip line (L13), the tenth strip line (L14)；
The second layer is by the second strip line (L21), the 5th strip line (L22), the 8th strip line (L23), the 11st strip line (L24) successively from while rearranging to another side with certain spacing, and the distance between the second strip line (L21), the 5th strip line (L22) is equal with the distance between the 8th strip line (L23), the 11st strip line (L24)；
Third layer is by the 3rd strip line (L31), the 6th strip line (L32), the 9th strip line (L33), the 12nd strip line (L34) successively from while rearranging to another side with certain spacing, and the distance between the 3rd strip line (L31), the 6th strip line (L32) is equal with the distance between the 9th strip line (L33), the 12nd strip line (L34)；
Wherein, 50 ohmage first input port (P1) are connected with first input inductance (Lin1) one end, first order parallel resonance unit (L11, L21, second strip line (L21) of the second layer L31) is connected with first input inductance (Lin1) other end, fourth stage level parallel resonance unit (L14, L24, 11st strip line (L24) of the second layer L34) is connected with the first outputting inductance (Lout1) one end, the other end of the first outputting inductance (Lout1) and 50 ohmages the first output port (P2) connect, first Z-shaped interstage coupling strip line (Z1) is positioned at the lower section of parallel resonance unit, second Z-shaped interstage coupling strip line (Z2) is positioned at the top of parallel resonance unit；
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 and first and third layer of earth terminal are contrary, the first equal ground connection in Z-shaped interstage coupling strip line (Z1) two ends, the second equal ground connection in Z-shaped interstage coupling strip line (Z2) two ends；
Input signal is through inductive transmission to first input port (P1), it is transferred to the second strip line (L21) via the first input inductance (Lin1), through first order parallel resonance unit (L11, L21, L31), second level parallel resonance unit (L12, L22, L32), third level parallel resonance unit (L13, L23, L33), fourth stage parallel resonance unit (L14, L24, L34), first Z-shaped interstage coupling strip line (Z1), the electromagnetic coupled of the second Z-shaped interstage coupling strip line (Z2), it is transferred to the 11st strip line (L24), via the first outputting inductance (Lout1), export at the first output port (P2)；
Second microwave filter (F2) includes 50 ohmages the second input port (P3), the second input inductance (Lin2), first order parallel resonance unit (L41, L51), second level parallel resonance unit (L42, L52), third level parallel resonance unit (L43, L53), fourth stage parallel resonance unit (L44, L54), the second outputting inductance (Lout2), the 3rd Z-shaped interstage coupling strip line (Z3), 50 ohmage the second output port (P4) and earth terminals；
Parallel resonance unit at different levels are successively from while rearranging to another side with certain spacing, parallel resonance unit at different levels are formed by two-layer parallel strip line, resonant element levels spacing at different levels are equal, ground floor is by the 13rd strip line (L41), 15th strip line (L42), 17th strip line (L43), 19th strip line (L44) is successively from while rearranging to another side with certain spacing, distance between 13rd strip line (L41) and the 15th strip line (L42) is equal with the distance between the 17th strip line (L43) and the 19th strip line (L44)；
The second layer is by the 14th strip line (L51), the 16th strip line (L52), the 18th strip line (L53), the 20th strip line (L54) successively from while rearranging to another side with certain spacing, and the distance between the 14th strip line (L51) and the 16th strip line (L52) is equal with the distance between the 18th strip line (L53) and the 20th strip line (L54)；
Wherein, second input port (P3) of 50 ohmages is connected with one end of the second input inductance (Lin2), the other end and the 14th strip line (L51) of the second input inductance (Lin2) connect, 20th strip line (L54) 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), and the 3rd Z-shaped interstage coupling strip line (Z3) is positioned at the lower section of parallel resonance unit；
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 3rd equal ground connection in Z-shaped interstage coupling strip line (Z3) two ends；
Input signal is through capacitive transmission to the second input port (P3), it is transferred to the 14th strip line (L51) via the second input inductance (Lin2), through first order parallel resonance unit (L41, L51), second level parallel resonance unit (L42, L52), third level parallel resonance unit (L43, L53), fourth stage parallel resonance unit (L44, L54), the electromagnetic coupled of the 3rd Z-shaped interstage coupling strip line (Z3), it is transferred to the 20th strip line (L54), via the second outputting inductance (Lout2), export at the second output port (P4).
nullLS wave band the most according to claim 1 and C-band two-frequency duplex wave filter，It is characterized in that: 50 ohmage input port (P1、P3)、Output port (P2、P4)、Input inductance (Lin1、Lin2)、Outputting inductance (Lout1、Lout2)、First order parallel resonance unit (L11、L21、L31、L41、L51)、Second level parallel resonance unit (L12、L22、L32、L42、L52)、Third level parallel resonance unit (L13、L23、L33、L43、L53)、Fourth stage parallel resonance unit (L14、L24、L34、L44、L54)、Z-shaped interstage coupling strip line (Z1、Z2、And earth terminal all uses LTCC technique to realize Z3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382459.1A CN105958163A (en) | 2016-06-01 | 2016-06-01 | LS wave band and C wave band double-frequency diplexer filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382459.1A CN105958163A (en) | 2016-06-01 | 2016-06-01 | LS wave band and C wave band double-frequency diplexer filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105958163A true CN105958163A (en) | 2016-09-21 |
Family
ID=56908699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610382459.1A Pending CN105958163A (en) | 2016-06-01 | 2016-06-01 | LS wave band and C wave band double-frequency diplexer filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105958163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029692A (en) * | 2019-11-25 | 2020-04-17 | 南京理工大学 | Novel absorption formula band pass filter based on LTCC |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934665A (en) * | 2015-07-13 | 2015-09-23 | 南京理工大学 | Ultrahigh frequency wave band selective microwave filter bank |
| CN104953210A (en) * | 2015-07-13 | 2015-09-30 | 南京理工大学 | X band and Ku band mixing duplex filter |
| CN104953209A (en) * | 2015-07-13 | 2015-09-30 | 南京理工大学 | Ultrahigh frequency band type LTCC (low temperature co-fired ceramic) duplex filter |
| CN104979608A (en) * | 2015-07-14 | 2015-10-14 | 南京理工大学 | SHF-band micro microwave filter bank |
-
2016
- 2016-06-01 CN CN201610382459.1A patent/CN105958163A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934665A (en) * | 2015-07-13 | 2015-09-23 | 南京理工大学 | Ultrahigh frequency wave band selective microwave filter bank |
| CN104953210A (en) * | 2015-07-13 | 2015-09-30 | 南京理工大学 | X band and Ku band mixing duplex filter |
| CN104953209A (en) * | 2015-07-13 | 2015-09-30 | 南京理工大学 | Ultrahigh frequency band type LTCC (low temperature co-fired ceramic) duplex filter |
| CN104979608A (en) * | 2015-07-14 | 2015-10-14 | 南京理工大学 | SHF-band micro microwave filter bank |
Non-Patent Citations (2)
| Title |
|---|
| ALEXANDER SIMINE等: "design of quasi-limped-element LTCC filters and duplexers for wireless communications", 《33RD EUROPEAN MICROWAVE CONFERENCE-MUNICH 2003》 * |
| 戴永胜，陈相治: "LTCC多级结构实现高性能微型带通滤波器的研究", 《现代电子技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029692A (en) * | 2019-11-25 | 2020-04-17 | 南京理工大学 | Novel absorption formula band pass filter based on LTCC |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104241747B (en) | Miniature active microwave and millimeter wave I/Q variable phase reversal quadrature filter | |
| CN103413993B (en) | Distributed type minisize band leads to balance filter | |
| CN101621146B (en) | L wave band miniature duplexer | |
| CN101621144B (en) | Miniature filter with low loss, high stop band and multi-zero suppression | |
| CN104409806B (en) | Mini active microwave and millimeter wave self-loading I/Q variable phase reversal orthogonal filter | |
| 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 | |
| CN104953212A (en) | UHF (ultra high frequency) band type miniature microwave filter bank | |
| CN103117428A (en) | Miniature band-pass filter of 60G millimeter waves | |
| CN104201446B (en) | Microwave millimeter-wave external-load multi-orthogonal inverse filter | |
| CN105762445A (en) | SHF waveband micro type microwave duplexer | |
| CN104979608A (en) | SHF-band micro microwave filter bank | |
| CN105048027A (en) | L-band miniature double-microwave balance power dividing filter | |
| CN104934666A (en) | SHF-waveband minisize microwave filter bank | |
| CN104953210A (en) | X band and Ku band mixing duplex filter | |
| CN105006618A (en) | LTCC-and-DGS-based miniature multi-path filter set | |
| CN104934665A (en) | Ultrahigh frequency wave band selective microwave filter bank | |
| CN104967424A (en) | UHF and SHF waveband miniature duplexer | |
| CN105006614A (en) | L-wave-band miniature active microwave variable phase-inverting balancing power divider and filter | |
| CN105958163A (en) | LS wave band and C wave band double-frequency diplexer filter | |
| CN104966875A (en) | Microwave millimeter wave active balance filtering power divider | |
| CN106099266A (en) | SHF wave band miniature duplexer based on LTCC | |
| CN105070988A (en) | S-waveband power dividing filter based on low-temperature co-fired ceramic (LTCC) | |
| CN205564923U (en) | Miniature microwave diplexer of SHF wave band | |
| CN104953209A (en) | Ultrahigh frequency band type LTCC (low temperature co-fired ceramic) duplex filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dai Yongsheng Inventor after: Li Bowen Inventor after: Liu Yi Inventor before: Li Bowen Inventor before: Liu Yi Inventor before: Dai Yongsheng |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160921 |