CN202009062U

CN202009062U - Waveguide duplexer

Info

Publication number: CN202009062U
Application number: CN2010206374301U
Authority: CN
Inventors: 李志永; 王�琦; 王清芬; 胡佳伟
Original assignee: CETC 54 Research Institute
Current assignee: CETC 54 Research Institute
Priority date: 2010-12-02
Filing date: 2010-12-02
Publication date: 2011-10-12
Anticipated expiration: 2020-12-02

Abstract

The utility model relates to a waveguide duplexer in the communication field, comprising a waveguide switch, a high-end wave filter, a low-end wave filter and a circulator, wherein a 1-1 port of the waveguide switch is connected with a sender; a 1-2 port of the waveguide is connected with one end of the low-end wave filter through waveguide, and the other port of the low-end wave filter is connected with a 4-2 port of the circulator through waveguide; a 1-3 port of the waveguide switch is connected with one port of the high-end wave filter through waveguide, and the other port of the high-end wave filter is connected with a 4-1 port of the circulator through waveguide; a 1-4 port of the waveguide switch is connected with the receiver; and a 4-3 port of the circulator is connected with an antenna. The waveguide duplexer adopts all waveguide connection, the insertion loss of a sending channel and a receiving channel is low, the standing-wave ratio is low, and the bearing power is large; and high-end and low-end all frequency work of the waveguide duplexer is realized by switching the receiving channel with the sending channel so that the work frequency of the waveguide duplexer is doubled.

Description

A kind of waveguide duplexer

Technical field

The utility model relates to the duplexer in a kind of communications field, is specially adapted to the high-power scatter communication high-frequency apparatus that requires transmitting-receiving frequency to switch.

Background technology

Scatter communication high-frequency apparatus extensive use on C-band at present.The coaxial duplexer of the inner employing of high-frequency apparatus is connected with coaxial cable can reduce equipment volume and weight, the coaxial switch device of use dpdt double-pole double-throw (DPDT) is easy to realize the switching of duplexer sending and receiving passage, but coaxial duplexer Insertion Loss is bigger, connect unstable, can not bear high-powerly, generally be no more than the continuous wave of 100W.Comparatively speaking, employing waveguide duplexer can reduce the insertion loss of passage, reduces the standing-wave ratio of passband, satisfy the environment of transmission high-power signal, but volume is bigger.The scatter communication high-frequency apparatus of development and production at present adopts sending and receiving filter and circulator to form duplexer, every suit high-frequency apparatus can only be launched high-end frequency signal, receive the frequency signal of low side, perhaps can only launch the frequency signal of low side, receive high-end frequency signal, same set of equipment can not realize launching or receiving the signal of full frequency band, and making has the frequency spectrum of half not utilize.

The utility model content

Technical problem to be solved in the utility model provides a kind of waveguide duplexer that can launch, receive the full frequency band signal.

For solving the problems of the technologies described above, technical solution adopted in the utility model is:

A kind of waveguide duplexer comprises waveguide switch, high end filter, low end filter and circulator, and the 1-1 port of waveguide switch connects sender; The 1-2 port of waveguide switch is connected with an end of low end filter by waveguide, and the another port of low end filter is connected with the 4-2 port of circulator by waveguide; The 1-3 port of waveguide switch is connected with a port of high end filter by waveguide, and another port of high end filter is connected with the 4-1 port of circulator by waveguide; The 1-4 port of waveguide switch connects receiver; The 4-3 port of circulator connects antenna.

All connectivity ports of described waveguide switch are the standard waveguide mouth, and can finish the passage switching according to instruction.

Described waveguide switch is four port waveguide switches of high-isolation.

Described high end filter and low end filter are that symmetry is placed.

Described circulator is made of three port waveguide cavity and cylindrical ferrite.

Owing to adopted technique scheme, the obtained technological progress of the utility model is:

1, the utility model can be operated in C-band, and duplexer sending and receiving passage can freely switch, and realizes the work of scatter communication high-frequency apparatus full frequency band.

2, the utility model adopts all-wave to lead connection, has reduced the insertion loss of sending and receiving passages, has improved standing-wave ratio, has increased the stability and the reliability of equipment work.

3, the utility model can satisfy the environment for use of the above high-power signal of transmission 500W.

Description of drawings

Fig. 1 is the structural representation of the utility model emission low-side signal, reception high-side signal;

Fig. 2 is the structural representation of the utility model emission high-side signal, reception low-side signal;

Fig. 3 is a waveguide switch structural representation of the present utility model

Fig. 4 is a high-end Filter Structures schematic diagram of the present utility model;

Fig. 5 is a low side Filter Structures schematic diagram of the present utility model;

Fig. 6 is a waveguide junction circulator structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further details:

Among Fig. 1 and Fig. 2, waveguide switch 1, high end filter 2, low end filter 3, circulator 4 have been comprised; One of working method: the large-signal of emission enters into the 1-2 mouth of waveguide switch 1 from the 1-1 mouth of waveguide switch 1, by entering the 4-2 mouth of circulator 4 behind the low end filter 3, through the 4-3 mouth, is transferred to antenna.The small-signal that receives enters high end filter 2 through 4-3 mouth, the 4-1 mouth of circulator 4, and the 1-3 mouth of the waveguide switch 1 of flowing through again enters the 1-4 mouth of waveguide switch 1, enters receiver.Two of working method: waveguide switch carries out passage and switches, the large-signal of emission enters into the 1-3 mouth of waveguide switch 1 from the 1-1 mouth of waveguide switch 1, by 4-1 mouth that enters circulator 4 behind the high end filter 2 and 4-2 mouth, the 4-3 mouth that passes through circulator, be transferred to antenna.The small-signal that receives enters low end filter 3 through the 4-3 mouth of circulator 4 and by 4-1 mouth, 4-2 mouth, again through the 1-2 of waveguide switch 1 mouth, enters the 1-4 mouth of waveguide switch 1, enters receiver at last.

Fig. 3 is a waveguide switch structural representation of the present utility model, has comprised outer conductor 8, inner wire 9, electric machine 7.Under the driving of electric machine, inner wire can be finished the switching between the waveguide switch port in the outer conductor inner rotation.Port one-1 can and port one-2 be communicated with, also switch to port one-1 and port one-3 and be communicated with; Port one-3 can and port one-4 be communicated with, also switch to port one-2 and port one-4 and be communicated with.Electric machine inside is equipped with stopping means, indicator cock puts in place.This structural design has satisfied the requirement that the high low side frequency of scatter communication high-frequency apparatus is switched.

Fig. 4 and Fig. 5 are respectively high end filter of the present utility model and low side Filter Structures schematic diagram, both overall dimension is consistent, all is made up of 8 joint waveguide resonant cavities, and coupled structure is the coupling of inductance diaphragm, link together by silver soldering and waveguide, input and output are the reciprocity symmetrical structure.

Fig. 6 is a circulator structural representation of the present utility model.Three port waveguide cavity 5 and cylindrical ferrite 6 have mainly been comprised.Because the gyromagnetism of Ferrite Material, 2. 1. signal be transferred to port along clockwise direction from port, 2. is transferred to port 3. from port, 3. is transferred to port 1. from port.Otherwise counterclockwise signal has the isolation of 25dB.This structural design has satisfied the requirement that scatter communication high-frequency apparatus duplexer signal transmitting and receiving closes the road.

The utility model mounting structure is as follows: the 1-1 mouth of waveguide switch be connected sender, the 1-2 mouth and the low end filter of waveguide switch link together by waveguide, the another port of low end filter is connected by waveguide with the 4-2 mouth of circulator.The 4-3 mouth of circulator connects antenna equipment, and the 4-1 mouth and the high end filter of circulator link together by waveguide, and another port of high end filter is connected with the 1-3 mouth of waveguide switch, and the 1-4 mouth of waveguide switch connects receiver.The utility model is installed on the base plate of scatter communication high-frequency apparatus.Base plate is screwed in equipment cabinets inside.

Claims

1. a waveguide duplexer is characterized in that: comprise waveguide switch (1), high end filter (2), low end filter (3) and circulator (4), the 1-1 port connection sender of waveguide switch; The 1-2 port of waveguide switch is connected by the end of waveguide with low end filter (3), and the another port of low end filter (3) is connected with the 4-2 port of circulator by waveguide; The 1-3 port of waveguide switch is connected with a port of high end filter by waveguide, and another port of high end filter is connected with the 4-1 port of circulator by waveguide; The 1-4 port of waveguide switch connects receiver; The 4-3 port of circulator connects antenna.

2. a kind of waveguide duplexer according to claim 1 is characterized in that: all connectivity ports of waveguide switch (1) are the standard waveguide mouth, and can finish the passage switching according to instruction.

3. a kind of waveguide duplexer according to claim 1 and 2 is characterized in that: described waveguide switch (1) is four port waveguide switches of high-isolation.

4. a kind of waveguide duplexer according to claim 3 is characterized in that: described high end filter (2) and low end filter (3) symmetry are placed.

5. a kind of waveguide duplexer according to claim 1 is characterized in that: described circulator is made of three port waveguide cavity (5) and cylindrical ferrite (6).