CN107146931B - A kind of adjustable micro-strip duplexer of four-way - Google Patents
A kind of adjustable micro-strip duplexer of four-way Download PDFInfo
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- CN107146931B CN107146931B CN201710315733.8A CN201710315733A CN107146931B CN 107146931 B CN107146931 B CN 107146931B CN 201710315733 A CN201710315733 A CN 201710315733A CN 107146931 B CN107146931 B CN 107146931B
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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
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
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- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of adjustable micro-strip duplexers of four-way, mainly by public input port, two output ports, the open-circuit resonant device of six half wavelength, two quarter-wave short-circuit resonant devices, 12 varactors, six capacitances, 12 DC power supplies, 12 high frequency choke coils, four feeder line compositions.One of output port output is first passage signal and second channel signal, and the output of another output port is third channel signal and fourth lane signal.By controlling the working frequency of the adjustable resonator of voltage at varactor both ends, and the working frequency of each channel signal can be controlled individually.The present invention has many advantages, such as that each channels operation frequency is individually controllable, structure is simple, size is small, at low cost, can be independently adjusted the working frequency in each channel and not influence the work in other channels, meets miniaturization, design requirement inexpensive, characteristic is good.
Description
Technical field
The present invention relates to the technical fields of high-frequency element, refer in particular to a kind of adjustable micro-strip duplexer of four-way.
Background technique
In recent years, universal in people's lives with wireless electronic product, miniaturization at low cost has become electronics
The trend of product.On the other hand, with the fast development of electronic information, the frequency spectrum resource being becoming tight day is deficienter, to improve
Message capacity and signal cross-talk between adjacent channel is reduced, selectivity to filter and integrated etc. more stringent requirements are proposed.
And microstrip filter then meets this some requirement.
Tunable filter plays an important role in terms of reducing system bulk, complexity, cost, because it can be at one
Multiple frequency ranges are realized in structure.
On the other hand, with the development of science and technology, the application range of microwave communication techniques is increasing, and various microwaves are logical
Letter system is also increasingly sophisticated.In different microwave frequency bands, each system is all real time bidirectional communication, in order to guarantee to believe in sending and receiving
Road receives in the case where sharing with common antenna and transmitting can work normally simultaneously, and the radio-frequency front-end of equipment must have signal
Synthesis and isolated device, i.e. microwave diplexer.
Thus, it is necessary to can conditioning technology and duplexer technology be combined together and studied, and in order to further reduce
The volume of system, the adjustable micro-strip duplexer of four-way are proposed out.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of adjustable micro-strip duplexer of four-way,
The working frequency in each channel can be independently adjusted and do not influence the work in other channels, can satisfy miniaturization, low cost,
The good design requirement of characteristic.
To achieve the above object, technical solution provided by the present invention are as follows: a kind of adjustable micro-strip duplexer of four-way, packet
It includes public input port, the first output port and second output terminal mouth, there is quarter-wave first short-circuit resonant device, tool
There is quarter-wave second short-circuit resonant device, the first open-circuit resonant device with half wavelength, there is half
Second open-circuit resonant device of wavelength, the third open-circuit resonant device with half wavelength, the with half wavelength the 4th
Open-circuit resonant device, the 5th open-circuit resonant device with half wavelength, the 6th open-circuit resonant device with half wavelength,
First DC power supply, the second DC power supply, third DC power supply, the 4th DC power supply, the 5th DC power supply, the 6th direct current
Source, the 7th DC power supply, the 8th DC power supply, the 9th DC power supply, the tenth DC power supply, the 11st DC power supply, the 12nd
DC power supply, the first capacitance, the second capacitance, third capacitance, the 4th capacitance, the 5th capacitance,
It is six capacitances, the first high frequency choke coil, the second high frequency choke coil, third high frequency choke coil, the 4th high frequency choke coil, the 5th high
Frequency choke coil, the 6th high frequency choke coil, the 7th high frequency choke coil, the 8th high frequency choke coil, the 9th high frequency choke coil, the tenth high frequency
Choke coil, the 11st high frequency choke coil, the 12nd high frequency choke coil, the first varactor, the second varactor, third become
Hold diode, the 4th varactor, the 5th varactor, the 6th varactor, the 7th varactor, the 8th transfiguration
Diode, the 9th varactor, the tenth varactor, the 11st varactor, the 12nd varactor, the first feedback
Line, the second feeder line, third feeder line, the 4th feeder line；
First feeder line is made of the first connected L-type microstrip line with the first varactor, which passes through
First capacitance is connected with the first output port；Second feeder line is by the second varactor, the second L-type microstrip line,
Four capacitances, the first straight microstrip line are sequentially connected composition, which passes through the 5th capacitance and public output mouth
It is connected；The third feeder line is made of the 7th connected varactor with the second straight microstrip line, and the second straight microstrip line connects
Connect the first straight microstrip line；4th feeder line is connected by the 8th varactor, third L-type microstrip line to be constituted, the 4th feeder line
It is connected by the 6th capacitance with second output terminal mouth；The first short-circuit resonant device is micro- by the straight microstrip line of third, third L-type
Band line, the second capacitance, the 4th straight microstrip line, third varactor are sequentially connected composition, and the straight microstrip line of third connects
Ground；The second short-circuit resonant device by the 5th straight microstrip line, the 4th L-type microstrip line, third capacitance, the 6th straight microstrip line,
4th varactor is sequentially connected composition, the 5th straight microstrip line ground connection；The first open-circuit resonant device is by the 5th transfiguration
Diode is connected composition with the first U-shaped microstrip line；The second open-circuit resonant device is by the 6th varactor and the second U-shaped micro-strip
Line, which is connected, to be constituted, and the third open-circuit resonant device, which is connected by the U-shaped microstrip line of third with the 11st varactor, to be constituted, and described the
Four open-circuit resonant devices, which are connected by the 4th U-shaped microstrip line with the 12nd varactor, to be constituted, and the 5th open-circuit resonant device is by
Seven straight microstrip lines, the 5th L-type microstrip line, the 9th varactor are sequentially connected composition, and the 6th open-circuit resonant device is by the 8th
Straight microstrip line, the 6th L-type microstrip line, the tenth varactor are sequentially connected composition；
First feeder line and the second feeder line are divided right and left, and analog-U shaped structure, the first short-circuit resonant device, second are constituted
Short-circuit resonant device, the first open-circuit resonant device, the second open-circuit resonant device are placed in such U-shaped structure, and the first short-circuit resonant device
It divides right and left with the second short-circuit resonant device, the first open-circuit resonant device and the second open-circuit resonant device are divided right and left, first short circuit
Resonator and the second short-circuit resonant device separate up and down with the first open-circuit resonant device and the second open-circuit resonant device；The third feeder line and
4th feeder line is divided right and left, and first straight microstrip line a part composition of the third feeder line, the 4th feeder line and the first feeder line is analog-U shaped
Structure, the third open-circuit resonant device, the 4th open-circuit resonant device, the 5th open-circuit resonant device, the 6th open-circuit resonant device are placed in such U
In type structure, and the third open-circuit resonant device and the 4th open-circuit resonant device are divided right and left, and the 5th open-circuit resonant device and the 6th is opened
Road resonator is divided right and left, and the third open-circuit resonant device and the 4th open-circuit resonant device and the 5th open-circuit resonant device and the 6th open circuit are humorous
The device that shakes separates up and down；
First DC power supply is connected by the first high frequency choke coil with the first L-type microstrip line, second direct current
Source is connected by the second high frequency choke coil with the second L-type microstrip line, the third DC power supply pass through third high frequency choke coil and
4th straight microstrip line is connected, and the 4th DC power supply is connected by the 4th high frequency choke coil with the 6th straight microstrip line, and described the
Five DC power supplies are connected by the 5th high frequency choke coil with the first U-shaped microstrip line, and the 6th DC power supply passes through the 6th high frequency
Choke coil is connected with the second U-shaped microstrip line, and the 7th DC power supply passes through the 7th high frequency choke coil and the first straight microstrip line phase
Even, the 8th DC power supply is connected by the tenth high frequency choke coil with third L-type microstrip line, and the 9th DC power supply passes through
11st high frequency choke coil is connected with the U-shaped microstrip line of third, and the tenth DC power supply passes through the 12nd high frequency choke coil and the
Four U-shaped microstrip lines are connected, and the 11st DC power supply is connected by the 8th high frequency choke coil with the 7th straight microstrip line, and described the
12 DC power supplies are connected by the 9th high frequency choke coil with the 8th straight microstrip line.
First output port output is first passage signal and second channel signal, the output of second output terminal mouth
It is third channel signal and fourth lane signal；The equivalent electrical length of the first short-circuit resonant device and the second short-circuit resonant device is
The a quarter of the working frequency corresponding wavelength of first passage；The first open-circuit resonant device and the second open-circuit resonant device it is equivalent
Electrical length is the half of the working frequency corresponding wavelength of second channel；The third open-circuit resonant device and the 4th open-circuit resonant
The equivalent electrical length of device is the half of the working frequency corresponding wavelength of third channel；The 5th open-circuit resonant device and electric current
The equivalent electrical length of open-circuit resonant device is the half of the working frequency corresponding wavelength of fourth lane.
The working frequency of the first passage is 930MHz-1605MHz, and the working frequency of the second channel is
1730MHz-2280MHz, the working frequency of the third channel are 2295MHz-2910MHz, the work frequency of the fourth lane
Rate is 3295MHz-3740MHz.
The transmission line impedance of the public input port, the first output port and second output terminal mouth is 50 ohm.
Compared with prior art, the present invention have the following advantages that with the utility model has the advantages that
1, the present invention can easily adjust the work in respective channel by loading varactor in resonator open circuit end
Frequency.
2, the working frequency in each channel can be individually adjusted, it can in the case where other channels remain unchanged
The working frequency in a channel is controlled alone.
3, the working frequency in four channels is respectively 930MHz-1605MHz, 1730MHz-2280MHz, 2295MHz-
2910MHz, 3295MHz-3740MHz, adjustable range is extremely wide, and covering frequence range is extremely wide, and return loss is superior to 10dB, and every
25dB is better than from degree.
4, due to the present invention be microstrip structure, it is small in size, light weight and cost is low, be suitble to industrial mass manufacture, so this hair
It is bright to have the advantage that structure is simple, production cost is low.
Detailed description of the invention
Fig. 1 is that micro-strip duplexer of the invention is produced on the structural schematic diagram on double-sided copper-clad micro-strip plate.
Fig. 2 is ADS (Advanced Design System) model of varactor used in the present invention.
Fig. 3 a be the fixed return loss in first passage regulable center frequency, other channels (| S22|), insertion loss (| S12
| and | S32|) and isolation (| S31|) ADS (Advanced Design System) simulation result.
Fig. 3 b be the fixed return loss in second channel regulable center frequency, other channels (| S22|), insertion loss (| S12
| and | S32|) and isolation (| S31|) ADS (Advanced Design System) simulation result.
Fig. 3 c be the fixed return loss in third channel regulable center frequency, other channels (| S22|), insertion loss (| S12
| and | S32|) and isolation (| S31|) ADS (Advanced Design System) simulation result.
Fig. 3 d be the fixed return loss in fourth lane regulable center frequency, other channels (| S22|), insertion loss (| S12
| and | S32|) and isolation (| S31|) ADS (Advanced Design System) simulation result.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
The core content of the adjustable micro-strip duplexer of four-way provided by the present embodiment is by controlling varactor both ends
Voltage controls the variation of its capacitance, and then realizes the change of the equivalent electrical length of resonator and adjust resonance frequency.
It is shown in Figure 1, the adjustable micro-strip duplexer of four-way, including public input port Port2, the first output
Port Port1 and second output terminal mouth Port3, with quarter-wave first short-circuit resonant device, have quarter-wave
Long the second short-circuit resonant device, the first open-circuit resonant device with half wavelength, second with half wavelength open
Road resonator, the third open-circuit resonant device with half wavelength, the 4th open-circuit resonant device with half wavelength, tool
The 5th open-circuit resonant device, the 6th open-circuit resonant device, the first DC power supply with half wavelength for having half wavelength
6, the second DC power supply 11, third DC power supply 27, the 4th DC power supply 36, the 5th DC power supply 23, the 6th DC power supply 20,
7th DC power supply 13, the 8th DC power supply 45, the 9th DC power supply 58, the tenth DC power supply 51, the 11st DC power supply 41,
12nd DC power supply 42, the first capacitance 2, the second capacitance 29, third capacitance 33, the 4th capacitance 12,
5th capacitance 16, the 6th capacitance 48, the first high frequency choke coil 5, the second high frequency choke coil 10, third high frequency choke coil
28, the 4th high frequency choke coil 35, the 5th high frequency choke coil 22, the 6th high frequency choke coil 19, the 7th high frequency choke coil the 14, the 8th are high
Frequency choke coil 40, the 9th high frequency choke coil 43, the tenth high frequency choke coil 46, the 11st high frequency choke coil 59, the 12nd high frequency are gripped
Stream circle the 50, first varactor 7, the second varactor 8, third varactor 25, the 4th varactor the 37, the 5th
Varactor 24, the 6th varactor 21, the 7th varactor 39, the 8th varactor 44, two pole of the 9th transfiguration
Pipe 56, the tenth varactor 53, the 11st varactor 57, the 12nd varactor 52, the first feeder line, the second feedback
Line, third feeder line, the 4th feeder line.
First feeder line is made of the first connected L-type microstrip line 4 with the first varactor 7, and first feeder line is logical
The first capacitance 2 is crossed to be connected with the first output port Port1；Second feeder line is by the second varactor 8, the second L-type
Microstrip line 9, the 4th capacitance 12, the first straight microstrip line 15 are sequentially connected composition, which passes through the 5th capacitance
16 are connected with public output mouth Port2；The third feeder line is by connected the 7th varactor 39 and the second straight microstrip line
38 are constituted, and the second straight microstrip line 38 connects the first straight microstrip line 15；4th feeder line is by the 8th varactor 44,
Three L-type microstrip lines 47, which are connected, to be constituted, and the 4th feeder line is connected by the 6th capacitance 48 with second output terminal mouth Port3；Institute
The first short-circuit resonant device is stated by the straight microstrip line 30 of third, third L-type microstrip line 31, the second capacitance 29, the 4th straight microstrip line
26, third varactor 25 is sequentially connected composition, and the straight microstrip line 30 of third is grounded；The second short-circuit resonant device is by
Five straight microstrip lines 61, the 4th L-type microstrip line 32, third capacitance 33, the 6th straight microstrip line 34, the 4th varactor 37 according to
Secondary connected composition, the 5th straight microstrip line 61 are grounded；The first open-circuit resonant device is by the 5th varactor 24 and the first U
Type microstrip line 3, which is connected, to be constituted；The second open-circuit resonant device is connected structure by the 6th varactor 21 with the second U-shaped microstrip line 18
At the third open-circuit resonant device, which is connected by the U-shaped microstrip line 60 of third with the 11st varactor 57, to be constituted, and the described 4th opens
Road resonator, which is connected by the 4th U-shaped microstrip line 49 with the 12nd varactor 52, to be constituted, and the 5th open-circuit resonant device is by
Seven straight microstrip lines 1, the 5th L-type microstrip line 55, the 9th varactor 56 are sequentially connected composition, the 6th open-circuit resonant device by
8th straight microstrip line 17, the 6th L-type microstrip line 54, the tenth varactor 53 are sequentially connected composition.
First feeder line and the second feeder line are divided right and left, and analog-U shaped structure, the first short-circuit resonant device, second are constituted
Short-circuit resonant device, the first open-circuit resonant device, the second open-circuit resonant device are placed in such U-shaped structure, and the first short-circuit resonant device
It divides right and left with the second short-circuit resonant device, the first open-circuit resonant device and the second open-circuit resonant device are divided right and left, first short circuit
Resonator and the second short-circuit resonant device separate up and down with the first open-circuit resonant device and the second open-circuit resonant device；The third feeder line and
4th feeder line is divided right and left, and first straight 15 a part of microstrip line of the third feeder line, the 4th feeder line and the first feeder line constitutes class U
Type structure, the third open-circuit resonant device, the 4th open-circuit resonant device, the 5th open-circuit resonant device, the 6th open-circuit resonant device are placed in this
In analog-U shaped structure, and the third open-circuit resonant device and the 4th open-circuit resonant device are divided right and left, the 5th open-circuit resonant device and the 6th
Open-circuit resonant device is divided right and left, and the third open-circuit resonant device and the 4th open-circuit resonant device and the 5th open-circuit resonant device and the 6th are opened a way
Resonator separates up and down.
First DC power supply 6 is connected by the first high frequency choke coil 5 with the first L-type microstrip line 4, second direct current
Power supply 11 is connected by the second high frequency choke coil 10 with the second L-type microstrip line 9, and the third DC power supply 27 passes through third high frequency
Choke coil 28 is connected with the 4th straight microstrip line 26, and the 4th DC power supply 36 is straight micro- with the 6th by the 4th high frequency choke coil 35
Band line 34 is connected, and the 5th DC power supply 23 is connected by the 5th high frequency choke coil 22 with the first U-shaped microstrip line 3, and described the
Six DC power supplies 20 are connected by the 6th high frequency choke coil 19 with the second U-shaped microstrip line 18, and the 7th DC power supply 13 passes through
7th high frequency choke coil 14 is connected with the first straight microstrip line 15, the 8th DC power supply 45 by the tenth high frequency choke coil 46 with
Third L-type microstrip line 47 is connected, and the 9th DC power supply 58 passes through the 11st high frequency choke coil 59 and the U-shaped microstrip line 60 of third
It is connected, the tenth DC power supply 51 is connected by the 12nd high frequency choke coil 50 with the 4th U-shaped microstrip line 49, and the described 11st
DC power supply 41 is connected by the 8th high frequency choke coil 40 with the 7th straight microstrip line 1, and the 12nd DC power supply 42 passes through the
Nine high frequency choke coils 43 are connected with the 8th straight microstrip line 17.
First output port Port1 output is first passage signal and second channel signal, second output terminal mouth Port3
Output is third channel signal and fourth lane signal；The equivalent electrical length of first short-circuit resonant device and the second short-circuit resonant device
For a quarter of working frequency (930MHz-1605MHz) corresponding wavelength of first passage；First open-circuit resonant device and second is opened
The equivalent electrical length of road resonator is the half of working frequency (1730MHz-2280MHz) corresponding wavelength of second channel；
The equivalent electrical length of third open-circuit resonant device and the 4th open-circuit resonant device is the working frequency (2295MHz- of third channel
2910MHz) the half of corresponding wavelength；5th open-circuit resonant device and the equivalent electrical length of current open resonator are fourth lane
Working frequency (3295MHz-3740MHz) corresponding wavelength half.The public input port Port2, the first output
The transmission line impedance of port Port1 and second output terminal mouth Port3 are 50 ohm.
Fig. 2 be using varactor ADS model, the present embodiment it is specifically used be 1405 (CV=2.67- of SMV
0.63pF, Rs=0.80 Ω, Cp=0.29pF, Ls=0.7nH).
First passage variation is shown in Fig. 3 a, and the scattering parameter of duplexer emulates knot in the case that other channels are constant
Fruit.Horizontal axis indicates that the signal frequency of micro-strip duplexer in the present invention, left vertical indicate the return loss (S of duplexer22), echo
Loss indicates the relationship between the input power of the port signal and the reflection power of signal, and corresponding mathematical function is as follows:
Reflection power/incident power=20*log | S22|.Fig. 3 a left vertical is also represented by the insertion loss (S of duplexer12And S32) emulation
As a result, insertion loss indicates the relationship between the input power an of signal and the output power of another port signal, phase
The mathematical function answered are as follows: output power/input power (dB)=20*log | S12| and (dB)=20*log | S32|.Wherein S12Table
Show Insertion Loss of the public input port Port2 to the first output port Port1, S32Indicate that public input port Port2 is defeated to second
Insertion Loss between exit port Port3.Isolation (the S of Fig. 3 a right vertical expression duplexer31), the isolation of duplexer indicates duplexer
The degree that interacts between output port, corresponding mathematical function are as follows: output power/input power (dB)=20*log |
S31|.It can be found that the working frequency of first passage is 930MHz-1605MHz, the return loss in each channel is superior to 10dB,
Isolation is better than 25dB, function admirable.
Second channel variation is shown in Fig. 3 b, and the scattering parameter of duplexer emulates knot in the case that other channels are constant
Fruit.It can be found that the working frequency of second channel is 1730MHz-2280MHz, the return loss in each channel is superior to 10dB,
Isolation is better than 25dB, function admirable.
Third channel variation is shown in Fig. 3 c, and the scattering parameter of duplexer emulates knot in the case that other channels are constant
Fruit.It can be found that the working frequency of third channel is 2295MHz-2910MHz, the return loss in each channel is superior to 10dB,
Isolation is better than 25dB, function admirable.
Fourth lane variation is shown in Fig. 3 d, and the scattering parameter of duplexer emulates knot in the case that other channels are constant
Fruit.It can be found that the working frequency of fourth lane is 3295MHz-3740MHz, the return loss in each channel is superior to 10dB,
Isolation is better than 25dB, function admirable.
Embodiment described above is only the preferred embodiments of the invention, and but not intended to limit the scope of the present invention, therefore
All shapes according to the present invention change made by principle, should all be included within the scope of protection of the present invention.
Claims (2)
1. a kind of adjustable micro-strip duplexer of four-way, it is characterised in that: including public input port, the first output port and
Two output ports, with quarter-wave first short-circuit resonant device, have quarter-wave second short-circuit resonant device,
The first open-circuit resonant device with half wavelength, the second open-circuit resonant device with half wavelength, have two/
The third open-circuit resonant device of one wavelength, the 4th open-circuit resonant device with half wavelength, with half wavelength
Five open-circuit resonant devices, the 6th open-circuit resonant device, the first DC power supply, the second DC power supply, third with half wavelength
DC power supply, the 4th DC power supply, the 5th DC power supply, the 6th DC power supply, the 7th DC power supply, the 8th DC power supply,
Nine DC power supplies, the tenth DC power supply, the 11st DC power supply, the 12nd DC power supply, the first capacitance, the second blocking electricity
It is appearance, third capacitance, the 4th capacitance, the 5th capacitance, the 6th capacitance, the first high frequency choke coil, second high
Frequency choke coil, third high frequency choke coil, the 4th high frequency choke coil, the 5th high frequency choke coil, the 6th high frequency choke coil, the 7th high frequency
It is choke coil, the 8th high frequency choke coil, the 9th high frequency choke coil, the tenth high frequency choke coil, the 11st high frequency choke coil, the 12nd high
Frequency choke coil, the first varactor, the second varactor, third varactor, the 4th varactor, the 5th transfiguration
Diode, the 6th varactor, the 7th varactor, the 8th varactor, the 9th varactor, the tenth transfiguration two
Pole pipe, the 11st varactor, the 12nd varactor, the first feeder line, the second feeder line, third feeder line, the 4th feeder line；
First feeder line is made of the first connected L-type microstrip line with the first varactor, which passes through first
Capacitance is connected with the first output port；Second feeder line by the second varactor, the second L-type microstrip line, the 4th every
Straight capacitor, the first straight microstrip line are sequentially connected composition, which is connected by the 5th capacitance with public output mouth；
The third feeder line is made of the 7th connected varactor with the second straight microstrip line, the second straight microstrip line connection first
Straight microstrip line；4th feeder line is connected by the 8th varactor, third L-type microstrip line to be constituted, and the 4th feeder line passes through the
Six capacitances are connected with second output terminal mouth；The first short-circuit resonant device by the straight microstrip line of third, third L-type microstrip line,
Second capacitance, the 4th straight microstrip line, third varactor are sequentially connected composition, the straight microstrip line ground connection of third；Institute
The second short-circuit resonant device is stated to be become by the 5th straight microstrip line, the 4th L-type microstrip line, third capacitance, the 6th straight microstrip line, the 4th
Hold diode and is sequentially connected composition, the 5th straight microstrip line ground connection；The first open-circuit resonant device is by the 5th varactor
Be connected composition with the first U-shaped microstrip line；The second open-circuit resonant device is connected by the 6th varactor with the second U-shaped microstrip line
It constitutes, the third open-circuit resonant device, which is connected by the U-shaped microstrip line of third with the 11st varactor, to be constituted, the 4th open circuit
Resonator, which is connected by the 4th U-shaped microstrip line with the 12nd varactor, to be constituted, and the 5th open-circuit resonant device is straight micro- by the 7th
Band line, the 5th L-type microstrip line, the 9th varactor are sequentially connected composition, and the 6th open-circuit resonant device is by the 8th straight micro-strip
Line, the 6th L-type microstrip line, the tenth varactor are sequentially connected composition；
First feeder line and the second feeder line are divided right and left, and analog-U shaped structure, the first short-circuit resonant device, the second short circuit are constituted
Resonator, the first open-circuit resonant device, the second open-circuit resonant device are placed in such U-shaped structure, and the first short-circuit resonant device and
Two short-circuit resonant devices are divided right and left, and the first open-circuit resonant device and the second open-circuit resonant device are divided right and left, first short-circuit resonant
Device and the second short-circuit resonant device separate up and down with the first open-circuit resonant device and the second open-circuit resonant device；The third feeder line and the 4th
Feeder line is divided right and left, and first straight microstrip line a part of the third feeder line, the 4th feeder line and the first feeder line constitutes analog-U shaped knot
Structure, the third open-circuit resonant device, the 4th open-circuit resonant device, the 5th open-circuit resonant device, that the 6th open-circuit resonant device is placed in this is analog-U shaped
In structure, and the third open-circuit resonant device and the 4th open-circuit resonant device are divided right and left, the 5th open-circuit resonant device and the 6th open circuit
Resonator is divided right and left, the third open-circuit resonant device and the 4th open-circuit resonant device and the 5th open-circuit resonant device and the 6th open-circuit resonant
Device separates up and down；
First DC power supply is connected by the first high frequency choke coil with the first L-type microstrip line, and second DC power supply is logical
It crosses the second high frequency choke coil to be connected with the second L-type microstrip line, the third DC power supply passes through third high frequency choke coil and the 4th
Straight microstrip line is connected, and the 4th DC power supply is connected by the 4th high frequency choke coil with the 6th straight microstrip line, and the described 5th is straight
Galvanic electricity source is connected by the 5th high frequency choke coil with the first U-shaped microstrip line, and the 6th DC power supply passes through the 6th high frequency choke
Circle is connected with the second U-shaped microstrip line, and the 7th DC power supply is connected by the 7th high frequency choke coil with the first straight microstrip line, institute
It states the 8th DC power supply to be connected by the tenth high frequency choke coil with third L-type microstrip line, the 9th DC power supply passes through the tenth
One high frequency choke coil is connected with the U-shaped microstrip line of third, and the tenth DC power supply is U-shaped by the 12nd high frequency choke coil and the 4th
Microstrip line is connected, and the 11st DC power supply is connected by the 8th high frequency choke coil with the 7th straight microstrip line, and the described 12nd
DC power supply is connected by the 9th high frequency choke coil with the 8th straight microstrip line；
First output port output is first passage signal and second channel signal, and the output of second output terminal mouth is the
Triple channel signal and fourth lane signal；The equivalent electrical length of the first short-circuit resonant device and the second short-circuit resonant device is first
The a quarter of the working frequency corresponding wavelength in channel；The equivalent electricity of the first open-circuit resonant device and the second open-circuit resonant device is long
Degree is the half of the working frequency corresponding wavelength of second channel；The third open-circuit resonant device and the 4th open-circuit resonant device
Equivalent electrical length is the half of the working frequency corresponding wavelength of third channel；The 5th open-circuit resonant device and the 6th open circuit
The equivalent electrical length of resonator is the half of the working frequency corresponding wavelength of fourth lane；
The working frequency of the first passage is 930MHz-1605MHz, and the working frequency of the second channel is 1730MHz-
The working frequency of 2280MHz, the third channel are 2295MHz-2910MHz, and the working frequency of the fourth lane is
3295MHz-3740MHz。
2. the adjustable micro-strip duplexer of a kind of four-way according to claim 1, it is characterised in that: the public input terminal
The transmission line impedance of mouth, the first output port and second output terminal mouth is 50 ohm.
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| CN110380167B (en) * | 2019-06-12 | 2021-05-25 | 电子科技大学 | Microstrip line type adjustable single-end-to-balance filter |
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| CN102610892A (en) * | 2012-03-23 | 2012-07-25 | 电子科技大学 | C-wave band magnetostatic surface wave 4-path channel device |
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| CN205621831U (en) * | 2016-03-30 | 2016-10-05 | 华南理工大学 | Adjustable band pass filter of dual -frenquency |
| CN206834310U (en) * | 2017-05-08 | 2018-01-02 | 华南理工大学 | A kind of adjustable micro-strip duplexer of four-way |
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2017
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| CN102610892A (en) * | 2012-03-23 | 2012-07-25 | 电子科技大学 | C-wave band magnetostatic surface wave 4-path channel device |
| CN104143672A (en) * | 2014-07-21 | 2014-11-12 | 华南理工大学 | Dual-frequency duplexer provided with branchy pitch line loading matching network |
| CN205621831U (en) * | 2016-03-30 | 2016-10-05 | 华南理工大学 | Adjustable band pass filter of dual -frenquency |
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