CN105789740A - Adjustable duplexer based on folded open-loop resonators - Google Patents
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- 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
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- 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
- H01P1/207—Hollow waveguide filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
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Abstract
The invention discloses an adjustable duplexer based on folded open-loop resonators. The adjustable duplexer comprises an upper microstrip structure layer, a middle dielectric plate layer and a lower grounding metal layer, wherein the upper microstrip structure layer comprises three input/output feeder lines, three blocking capacitors, a pair of first channel adjustable open-loop resonators and a pair of second channel adjustable open-loop resonators. Each adjustable open-loop resonator is composed of a folded microstrip line, a termination varactor diode, a center-loaded capacitor and a resistor, wherein the termination varactor diode is used for adjusting the center frequency of each channel; and the center-loaded capacitor and the resistor are used for restraining the harmonic component of each channel. A first input port and a second output port form a first channel transmission path, the first input port and a third output port form a second channel transmission path, and the two channels are mutually little influenced. The adjustable duplexer has the advantages that the center frequency of each channel is independently adjustable, the isolation degree is high, the structure is simply designed, the electric performance is good, and circuit integration and system packaging can be realized easily.
Description
Technical field
The present invention relates to a kind of radio frequency adjustable duplexer based on varactor, be specifically related to a kind of each channel Independent adjustable, isolation is high, harmonics restraint degree is high radio frequency adjustable duplexer.
Background technology
Along with developing rapidly of wireless communication technology, various communication services are arisen at the historic moment at different frequency range, especially in the frequency modulation communication system such as radar, electronic countermeasure, it is necessary to support that the restructural radio-frequency front-end of multiband covers the data transmission of various communication system.Tunable radio frequency multiplexer is the key device of restructural radio-frequency front-end, carries the effect selecting multiple required frequency bands from crowded spectrum environment in advance.Many scholar's research have devised the duplexer of different structure, triplexer, four multiplexers, but these devices all can only be fixed on certain characteristic frequency, and may not apply in reconfigurable system to carry out frequency selection.Duplexer is as the one of multiplexer, and a main task of its design finds an effective method that public input port and two channels are mated simultaneously exactly.For the duplexer that frequency is fixing, it is possible to use T junction, public resonator etc. carry out impedance matching.But, for adjustable duplexer, when channel frequency regulates, each channel can change along with the change of frequency to the input impedance of public input port, is therefore difficult to design such a matching network or public resonator makes public input port mate with each channel in tuning range simultaneously.Therefore, present stage is also little for the research design of adjustable duplexer, and its shortcoming is: (1) each channel is not absolute Independent adjustable；(2), in channel adjustment process, isolation is not high；(3) needed for, DC source kind is many.
Summary of the invention
It is an object of the invention to provide a kind of adjustable duplexer based on folded form open-loop resonator.
The technical solution realizing the object of the invention is: a kind of adjustable duplexer being based on folded form open-loop resonator, including upper-layer micro-strip structure, interlayer plate and lower floor's grounded metal；Upper-layer micro-strip structure is attached to interlayer upper surface of base plate, and grounded metal is attached to the lower surface of interlayer substrate；First port of this adjustable duplexer, the second port and the 3rd port are positioned at the upper strata of medium substrate, and described first port is positioned at the side of medium substrate, and described second port and the 3rd port are positioned at the other side of medium substrate；Article three, the microstrip line of 50 ohm is connected with three corresponding ports respectively, this microstrip line of three articles 50 ohm respectively first microstrip line, the second microstrip line and the 3rd microstrip line, described three microstrip lines are parallel to each other, and wherein the 3rd microstrip line, the second microstrip line lay respectively at the upper and lower both sides of the first microstrip line；
First open-loop resonator and the second open-loop resonator are between the first microstrip line and the second microstrip line, second open-loop resonator and the first open-loop resonator about the horizontal median axis specular of the first microstrip line and the second microstrip line, the center of the first open-loop resonator, center and first microstrip line of the second open-loop resonator, the second microstrip line center on the same line；First electric capacity is connected on the midpoint of the first open-loop resonator, the other end of the first electric capacity passes through the first resistance eutral grounding, first varactor is connected on one end of the first open-loop resonator, the other end ground connection of the first varactor, the other end open circuit of described first open-loop resonator；Second electric capacity is connected on the midpoint of the second open-loop resonator, the other end of the second electric capacity passes through the second resistance eutral grounding, second varactor is connected on one end of the second open-loop resonator, the other end ground connection of the second varactor, the other end open circuit of described second open-loop resonator；First open-loop resonator and the second open-loop resonator constitute the first channel；First capacitance is embedded in the first microstrip line, and the second capacitance is embedded in the second microstrip line；
3rd open-loop resonator and pendant collet resonator are between the first microstrip line and the 3rd microstrip line, pendant collet resonator and the 3rd open-loop resonator about the horizontal median axis specular of the first microstrip line and the 3rd microstrip line, the 3rd open-loop resonator, pendant collet resonator center and the 3rd microstrip line center on the same line；3rd electric capacity is connected on the midpoint of the 3rd open-loop resonator, the other end of the 3rd electric capacity passes through the 3rd resistance eutral grounding, 3rd varactor is connected on one end of the 3rd open-loop resonator, the other end ground connection of the 3rd varactor, the other end open circuit of described 3rd open-loop resonator；4th electric capacity is connected on the midpoint of pendant collet resonator, the other end of the 4th electric capacity passes through the 4th resistance eutral grounding, 4th varactor is connected on one end of pendant collet resonator, the other end ground connection of the 4th varactor, the other end open circuit of described pendant collet resonator；3rd open-loop resonator and pendant collet resonator constitute second channel；3rd capacitance is embedded in the 3rd microstrip line.
Compared with prior art, present invention have the advantage that 1) present invention is based on folded form open-loop resonator, and the open-loop resonator direct-coupling input/output feeder lines that employing two is different to mid frequency, at public port without additional matching network；2) two channels have respective transmission path, do not affect each other, therefore two channel Independent adjustable, and in whole tuning range the isolation of two interchannels more than 50dB；3) loading the electric capacity of series connection, resistance at each resonator central, out-of-band harmonics suppresses frequency range to reach six frequencys multiplication of the first channel lowest center frequency.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the present invention schematic diagram based on the adjustable duplexer of folded form open-loop resonator.
Fig. 2 a is the schematic diagram of folded form open-loop resonator.
Fig. 2 b is the equivalent circuit of folded form open-loop resonator.
Fig. 3 a be second channel mid frequency fix, the first adjustable transfer curve of channel center frequency.
Fig. 3 b be second channel mid frequency fix, the first adjustable return loss plot of channel center frequency.
Fig. 3 c be second channel mid frequency fix, the first adjustable port isolation curve of channel center frequency.
Fig. 4 a be the first channel center frequency fix, the transfer curve of second channel regulable center frequency.
Fig. 4 b be the first channel center frequency fix, the return loss plot of second channel regulable center frequency.
Fig. 4 c be the first channel center frequency fix, the port isolation curve of second channel regulable center frequency.
Detailed description of the invention
The invention discloses a kind of adjustable duplexer based on folded form open-loop resonator, including upper-layer micro-strip structure, interlayer substrate and lower floor's grounded metal, upper-layer micro-strip structure is attached to interlayer upper surface of base plate, and grounded metal is attached to the lower surface of interlayer substrate.First port P1 of this adjustable duplexer, the second port P2 and the three port P3 are positioned at the upper strata of medium substrate, and described first port P1 is positioned at the side of medium substrate, and described second port P2 and the three port P3 is positioned at the other side of medium substrate.Article three, the microstrip line of 50 ohm is connected with three corresponding ports respectively, this microstrip line of three articles 50 ohm is the first microstrip line the 1, second microstrip line 2 and the 3rd microstrip line 3 respectively, described three microstrip lines are parallel to each other, and wherein the 3rd microstrip line the 3, second microstrip line 2 lays respectively at the upper and lower both sides of the first microstrip line 1；
First open-loop resonator 7 and the second open-loop resonator 8 are between the first microstrip line 1 and the second microstrip line 2, second open-loop resonator 8 and the first open-loop resonator 7 about the horizontal median axis specular of the first microstrip line 1 and the second microstrip line 2, the center of the first open-loop resonator 7, the second open-loop resonator 8 the center of center and first microstrip line the 1, second microstrip line 2 on same line；First electric capacity 11 is connected on the midpoint of the first open-loop resonator 7, and the other end of the first electric capacity 11 passes through the first resistance 15 ground connection；First varactor 19 is connected on one end of the first open-loop resonator 7, the other end ground connection of the first varactor 19, the other end open circuit of described first open-loop resonator 7；Second electric capacity 12 is connected on the midpoint of the second open-loop resonator 8, the other end of the second electric capacity 12 passes through the second resistance 16 ground connection, second varactor 20 is connected on one end of the second open-loop resonator 8, the other end ground connection of the second varactor 20, the other end open circuit of described second open-loop resonator 8；First open-loop resonator 7 and the second open-loop resonator 8 constitute the first channel；First capacitance 4 is embedded in the first microstrip line 1, and the second capacitance 5 is embedded in the second microstrip line 2；
3rd open-loop resonator 9 and pendant collet resonator 10 are between the first microstrip line 1 and the 3rd microstrip line 3, pendant collet resonator 10 and the 3rd open-loop resonator 9 about the horizontal median axis specular of the first microstrip line 1 and the 3rd microstrip line 3, the 3rd open-loop resonator 9, pendant collet resonator 10 center and the 3rd microstrip line 3 center on the same line；3rd electric capacity 13 is connected on the midpoint of the 3rd open-loop resonator 9, and the other end of the 3rd electric capacity 13 passes through the 3rd resistance 17 ground connection；3rd varactor 21 is connected on one end of the 3rd open-loop resonator 9, the other end ground connection of the 3rd varactor 21, the other end open circuit of described 3rd open-loop resonator 9；4th electric capacity 14 is connected on the midpoint of pendant collet resonator 10, and the other end of the 4th electric capacity 14 passes through the 4th resistance 18 ground connection；4th varactor 22 is connected on one end of pendant collet resonator 10, the other end ground connection of the 4th varactor 22, the other end open circuit of described pendant collet resonator 10；3rd open-loop resonator 9 and pendant collet resonator 10 constitute second channel；3rd capacitance 6 is embedded in the 3rd microstrip line 3.
In the described adjustable duplexer based on folded form open-loop resonator, the vacant end of described varactor both passes through interlayer substrate and is connected with lower floor grounded metal.
Described first microstrip line 1 and the second microstrip line 2 have identical length, width, width and first microstrip line 1 of described 3rd microstrip line 3 are equal, described first open-loop resonator 7 and the second open-loop resonator 8 have identical length, width, and length is the first channel center frequency wavelength 1/2nd, the width of the first open-loop resonator 7 is less than the width of the first microstrip line 1, described 3rd open-loop resonator 9 and pendant collet resonator 10 have identical length, width, and length is second channel center frequency wavelength 1/2nd, the width of the 3rd open-loop resonator 9 is less than the width of the first microstrip line 1.
Coupling space between described first microstrip line 1 and the first open-loop resonator 7, coupling space between second microstrip line 2 with the second open-loop resonator 8 is identical is 0.15mm～0.4mm, coupling space between described first microstrip line 1 and the 3rd open-loop resonator 9, identical 0.15mm～the 0.3mm that is of coupling space between 3rd microstrip line 3 and pendant collet resonator 10, coupling space between described first open-loop resonator 7 and the second open-loop resonator 8 is 0.3mm～0.6mm, coupling space between described 3rd open-loop resonator 9 and pendant collet resonator 10 is 0.4mm～0.7mm.
The capacitance of described three capacitances is identical and is 50pF～150pF, described first electric capacity 11 is identical with the capacitance of the second electric capacity 12 and is 0.5pF～1pF, described 3rd electric capacity 13 is identical with the capacitance of the 4th electric capacity 14 and is 0.2pF～1pF, and the resistance of described four resistance is identical and is 30 Ω～100 Ω.
The dielectric constant of described medium substrate is 2～16, and the height of medium substrate is 0.1mm～4mm.
Below in conjunction with embodiment, the present invention is further detailed explanation.
Embodiment
The present invention is based on the adjustable duplexer of folded form open-loop resonator, two pairs of different open-loop resonator direct-coupling input/output feeder lines, by loading varactor in one end of resonator, change the mid frequency of two channels, resonator central loads the electric capacity of series connection, resistance to suppress out-of-band harmonics component, two transmission paths do not affect each other, it may be achieved channel Independent adjustable, obtain higher isolation.The size of whole medium substrate, 100mm*69.17mm*0.5mm, the dielectric constant of medium substrate is 2.65.nullMicrostrip line 1 in Fig. 1、The length of 2 is 99.5mm，Width is 1.36mm，The length of microstrip line 3 is 56mm、Width is 1.36mm，Open-loop resonator 7、The length of 8 is 95.9mm、Width is 0.8mm，Open-loop resonator 9、The length of 10 is 49.18mm、Width is 0.8mm，Coupling space between microstrip line 1 and open-loop resonator 7、Coupling space between microstrip line 2 with open-loop resonator 8 is identical is 0.15mm，Coupling space between microstrip line 1 and open-loop resonator 9、Coupling space between microstrip line 3 with open-loop resonator 10 is identical is 0.15mm，Coupling space between open-loop resonator 7 and open-loop resonator 8 is 0.45mm，Coupling space between open-loop resonator 9 and open-loop resonator 10 is 0.5mm，Capacitance 4、5、The capacitance of 6 is identical is 100pF，First electric capacity 11、The capacitance of the second electric capacity 12 is 0.7pF，3rd electric capacity 13、The capacitance of the 4th electric capacity 14 is 0.2pF，First resistance 15、Second resistance 16、3rd resistance 17、The resistance value of the 4th resistance 18 is identical is 50 Ω，First varactor 19、Second varactor 20、3rd varactor 21、4th varactor 22 all selects the SMV2201-040LF of Skyworks company.
Fig. 2 a is the schematic diagram of described folded form open-loop resonator, one end load varactor, the other end open a way, center loaded series connection electric capacity and resistance, as shown in Figure 2 b, its input admittance is represented by equivalent circuit:
Wherein, f is resonant frequency, and Y is the characteristic admittance of resonator microstrip line, and θ is 1/2nd electrical length of resonator microstrip line, and C represents the capacitance of electric capacity 11,12,13,14, and R represents the resistance value of resistance 15,16,17,18, CVRepresent the capacitance of varactor 19,20,21,22.As Im [YinDuring]=0, it can be deduced that resonant frequency and varactor capacitance value CVRelation.
Fig. 3 a～Fig. 3 c and Fig. 4 a～Fig. 4 c gives the simulation result of the duplexer utilizing described parameter designing, shown in Fig. 3 a～Fig. 3 c be second-channel frequency fix, the first adjustable duplexer simulated properties of channel frequency, from Fig. 3 a and Fig. 3 b, first channel frequency tuning range is from 0.85GHz to 1.01GHz, there is the relative frequency tuning range of 17.2%, insertion loss changes to 5.9dB from 0.94dB, return loss is higher than 20dB, and second-channel frequency is fixed on 1.82GHz and frequency response remains unchanged.Shown in Fig. 4 a～Fig. 4 c be the first channel frequency fix, the adjustable duplexer simulated properties of second-channel frequency, from Fig. 4 a and Fig. 4 b, second-channel frequency tuning range is from 1.62GHz to 1.82GHz, there is the relative frequency tuning range of 11.6%, insertion loss changes to 5.9dB from 1.7dB, return loss is higher than 15dB, and the first channel frequency is fixed on 1.01GHz and frequency response remains unchanged.By Fig. 3 b and Fig. 4 b it can be seen that in whole tuning range, out-of-band harmonics suppresses higher than 20dB, and harmonics restraint frequency range reaches six frequencys multiplication of the first channel lowest center frequency.By Fig. 3 c and Fig. 4 c it can be seen that in whole tuning range, the isolation between port 2 and port 3 is higher than 50dB.
Therefore, the adjustable duplexer that the present invention proposes, by loading varactor in one end of resonator, change the mid frequency of two channels, the electric capacity of center loaded series connection of resonator, resistance are to suppress out-of-band harmonics component, the open-loop resonator direct-coupling input/output feeder line that two pairs of mid frequencyes are different, two transmission paths do not affect each other, channel Independent adjustable can be realized, obtain higher isolation, additionally this adjustable duplexer also has that required DC source is few, structural design is simple etc. a little, it is possible to achieve restructural duplexer preferably.
Claims (6)
1. the adjustable duplexer based on folded form open-loop resonator, it is characterised in that include upper-layer micro-strip structure, interlayer plate and lower floor's grounded metal；Upper-layer micro-strip structure is attached to interlayer upper surface of base plate, and grounded metal is attached to the lower surface of interlayer substrate；First port (P1) of this adjustable duplexer, the second port (P2) and the 3rd port (P3) are positioned at the upper strata of medium substrate, described first port (P1) is positioned at the side of medium substrate, and described second port (P2) and the 3rd port (P3) are positioned at the other side of medium substrate；Article three, the microstrip line of 50 ohm is connected with three corresponding ports respectively, this microstrip line of three articles 50 ohm respectively the first microstrip line (1), the second microstrip line (2) and the 3rd microstrip line (3), described three microstrip lines are parallel to each other, and wherein the 3rd microstrip line (3), the second microstrip line (2) lay respectively at the upper and lower both sides of the first microstrip line (1)；
First open-loop resonator (7) and the second open-loop resonator (8) are positioned between the first microstrip line (1) and the second microstrip line (2), second open-loop resonator (8) and the first open-loop resonator (7) about the horizontal median axis specular of the first microstrip line (1) and the second microstrip line (2), the center of the first open-loop resonator (7), center and first microstrip line (1) of the second open-loop resonator (8), the second microstrip line (2) center on the same line；First electric capacity (11) is connected on the midpoint of the first open-loop resonator (7), the other end of the first electric capacity (11) passes through the first resistance (15) ground connection, first varactor (19) is connected on one end of the first open-loop resonator (7), the other end ground connection of the first varactor (19), the other end open circuit of described first open-loop resonator (7)；Second electric capacity (12) is connected on the midpoint of the second open-loop resonator (8), the other end of the second electric capacity (12) passes through the second resistance (16) ground connection, second varactor (20) is connected on one end of the second open-loop resonator (8), the other end ground connection of the second varactor (20), the other end open circuit of described second open-loop resonator (8)；First open-loop resonator (7) and the second open-loop resonator (8) constitute the first channel；First capacitance (4) is embedded in the first microstrip line (1), and the second capacitance (5) is embedded in the second microstrip line (2)；
3rd open-loop resonator (9) and pendant collet resonator (10) are positioned between the first microstrip line (1) and the 3rd microstrip line (3), pendant collet resonator (10) and the 3rd open-loop resonator (9) about the horizontal median axis specular of the first microstrip line (1) and the 3rd microstrip line (3), the 3rd open-loop resonator (9), pendant collet resonator (10) center and the 3rd microstrip line (3) center on the same line；3rd electric capacity (13) is connected on the midpoint of the 3rd open-loop resonator (9), the other end of the 3rd electric capacity (13) passes through the 3rd resistance (17) ground connection, 3rd varactor (21) is connected on one end of the 3rd open-loop resonator (9), the other end ground connection of the 3rd varactor (21), the other end open circuit of described 3rd open-loop resonator (9)；4th electric capacity (14) is connected on the midpoint of pendant collet resonator (10), the other end of the 4th electric capacity (14) passes through the 4th resistance (18) ground connection, 4th varactor (22) is connected on one end of pendant collet resonator (10), the other end ground connection of the 4th varactor (22), the other end open circuit of described pendant collet resonator (10)；3rd open-loop resonator (9) and pendant collet resonator (10) constitute second channel；3rd capacitance (6) is embedded in the 3rd microstrip line (3).
2. the adjustable duplexer based on folded form open-loop resonator according to claim 1, it is characterised in that the vacant end of described varactor both passes through interlayer substrate and is connected with lower floor grounded metal.
3. the adjustable duplexer based on folded form open-loop resonator according to claim 1, it is characterized in that, described first microstrip line (1) and the second microstrip line (2) have identical length, width, width and first microstrip line (1) of described 3rd microstrip line (3) are equal, described first open-loop resonator (7) and the second open-loop resonator (8) have identical length, width, and length is the first channel center frequency wavelength 1/2nd, the width of the first open-loop resonator (7) is less than the width of the first microstrip line (1)；Described 3rd open-loop resonator (9) and pendant collet resonator (10) have identical length, a width, and length is second channel center frequency wavelength 1/2nd, the width of the 3rd open-loop resonator (9) is less than the width of the first microstrip line (1).
null4. the adjustable duplexer based on folded form open-loop resonator according to claim 1，It is characterized in that，Coupling space between described first microstrip line (1) and the first open-loop resonator (7)、Coupling space between second microstrip line (2) with the second open-loop resonator (8) is identical is 0.15mm ~ 0.4mm，Coupling space between described first microstrip line (1) and the 3rd open-loop resonator (9)、Coupling space between 3rd microstrip line (3) and pendant collet resonator (10) is identical is 0.15mm ~ 0.3mm，Coupling space between described first open-loop resonator (7) and the second open-loop resonator (8) is 0.3mm ~ 0.6mm，Coupling space between described 3rd open-loop resonator (9) and pendant collet resonator (10) is 0.4mm ~ 0.7mm.
5. the adjustable duplexer based on folded form open-loop resonator according to claim 1, it is characterized in that, the capacitance of described three capacitances is identical is 50pF ~ 150pF, described first electric capacity (11) is identical with the capacitance of the second electric capacity (12) is 0.5pF ~ 1pF, described 3rd electric capacity (13) is identical with the capacitance of the 4th electric capacity (14) and is 0.2pF ~ 1pF, and the resistance of described four resistance is identical is 30 Ω ~ 100 Ω.
6. the adjustable duplexer based on folded form open-loop resonator according to claim 1, it is characterised in that the dielectric constant of medium substrate is 2 ~ 16, the height of medium substrate is 0.1 ~ 4mm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058391A (en) * | 2016-07-25 | 2016-10-26 | 华南理工大学 | Novel coupling network based planar CQ diplexer |
| CN108808186A (en) * | 2018-08-13 | 2018-11-13 | 电子科技大学 | A kind of four work device of reconfigurable microwave |
| CN110011015A (en) * | 2019-03-01 | 2019-07-12 | 电子科技大学 | A kind of frequency and bandwidth reconfigurable microwave triplexer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000038883A (en) * | 1998-12-09 | 2000-07-05 | 이계철 | Duplexer having microstrip line structure |
| CN2867622Y (en) * | 2006-02-27 | 2007-02-07 | 东南大学 | Microwave subharmonic up-converter |
-
2016
- 2016-04-22 CN CN201610256452.5A patent/CN105789740A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000038883A (en) * | 1998-12-09 | 2000-07-05 | 이계철 | Duplexer having microstrip line structure |
| CN2867622Y (en) * | 2006-02-27 | 2007-02-07 | 东南大学 | Microwave subharmonic up-converter |
Non-Patent Citations (3)
| Title |
|---|
| CHI-FENG CHEN, CHENG-YU LIN, BO-HAO TSENG, AND SHENG-FA CHANG: "A Compact Tunable Microstrip Diplexer Using Varactor-Tuned Dual-Mode Stub-Loaded Resonators", 《IEEE INT. MICROW. SYMP》 * |
| HUSSEIN SHAMAN AND SULTAN ALMORQI，OSAMA HARAZ等: "Millimeter-Wave Microstrip Diplexer using Elliptical Open-Loop Ring Resonators for Next Generation 5G Wireless Applications", 《MICROWAVE SYMPOSIUM (MMS), 2014 14TH MEDITERRANEAN》 * |
| SHIN-JIE ZENG, JYUN-YI WU, AND WEN-HUA TU: "Compact and High-Isolation Quadruplexer Using Distributed Coupling Technique", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058391A (en) * | 2016-07-25 | 2016-10-26 | 华南理工大学 | Novel coupling network based planar CQ diplexer |
| CN106058391B (en) * | 2016-07-25 | 2019-04-09 | 华南理工大学 | A kind of plane CQ duplexer based on novel matching network |
| CN108808186A (en) * | 2018-08-13 | 2018-11-13 | 电子科技大学 | A kind of four work device of reconfigurable microwave |
| CN110011015A (en) * | 2019-03-01 | 2019-07-12 | 电子科技大学 | A kind of frequency and bandwidth reconfigurable microwave triplexer |
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Application publication date: 20160720 |