CN202172113U - C frequency range large span multichannel output multiplexer - Google Patents
C frequency range large span multichannel output multiplexer Download PDFInfo
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- CN202172113U CN202172113U CN2011202718742U CN201120271874U CN202172113U CN 202172113 U CN202172113 U CN 202172113U CN 2011202718742 U CN2011202718742 U CN 2011202718742U CN 201120271874 U CN201120271874 U CN 201120271874U CN 202172113 U CN202172113 U CN 202172113U
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Abstract
The utility model discloses a C frequency range large span multichannel output multiplexer, comprising channel filters (1), divergence rectangular waveguides (2), a short circuit face (3), tightening screws (6), compensation ET section tuning screws (7), and phase diaphragms (8). The channel filters (1) are connected with waveguide ports of the divergence rectangular waveguides (2) through the phase diaphragms (8). The compensation ET section tuning screws (7) are disposed in central positions opposite to the waveguide ports of the divergence rectangular waveguides (2). A plurality of the divergence rectangular waveguides (2) are connected into a segment; and one port of the connected segment of the divergence rectangular waveguides (2) is provided with the short circuit face (3) and the other port provided with no short circuit face (3) is an output port. The C frequency range large span multichannel output multiplexer has the characteristics of large power, high Q value and wide working range, thereby meeting the increasing requirements of communication system application at the present stage.
Description
Technical field
The utility model relates to C frequency range large span multichannel output multiplexer, belongs to the microwave filter field.
Background technology
In the communication satellite coverage system; Output multiplexer is the critical component of payload, is positioned at after the high power amplifier, and the multi channel signals after amplifying through high power amplifier is reconsolidated together; After removing harmonic wave and clutter, be sent to antenna feed system and downlink again.The function of output multiplexer will guarantee that on the one hand the signal power of synthetic each channel transmits as far as possible, will have very high inhibition to the signal of other passage on the other hand.Along with the continuous increase of communication satellite message capacity, to operating frequency range, the way of output multiplexer, bear power requirement also increasingly high.
C frequency range large span multichannel output multiplexer is made up of single channel band pass filter and difference rectangular waveguide; The single channel band pass filter adopts invar thin-walled cylindrical cavity dual mode filter; The international at present and domestic path filter form that is used for output multiplexer commonly used has dielectric filter; Invar thin-walled cylindrical cavity dual mode filter etc., but the power that dielectric filter carries is less than invar thin-walled cylindrical cavity dual mode filter.Since the invar thin-walled cylindrical cavity bimodulus output multiplexer of C frequency range have full frequency band (operating frequency range of 3.4GHz～4.2GHz) with can bear high power, so be widely used in the communication system.
The utility model content
The technology of the utility model is dealt with problems and is: overcome the deficiency of prior art, a kind of C frequency range large span multichannel output multiplexer is provided.The said output multiplexer of the utility model has characteristics such as high-power, high Q value, working range be wide, can satisfy the communication system applications requirement that present stage increases day by day.
The technical solution of the utility model is:
C frequency range large span multichannel output multiplexer comprises: path filter, difference rectangular waveguide, short circuit face, trip bolt, compensation ET joint tuning screw, phase place diaphragm,
Said path filter links to each other with the waveguide port of difference rectangular waveguide through the phase place diaphragm, and utilizes trip bolt to fix, and on each difference rectangular waveguide, can connect 1 to 6 path filter;
Said compensation ET joint tuning screw is installed on the center on the waveguide port opposite of difference rectangular waveguide;
A plurality of difference rectangular waveguides are interconnected to form one section; And on the port after the difference waveguide links to each other short circuit face is installed; The port of the short circuit face of installation is the output port of said multiplexer; Wherein, between the port that two difference rectangular waveguides link to each other and between difference rectangular waveguide and port that short circuit face links to each other the phase place diaphragm is being installed.
Surpassing 10 path filters is connected on a plurality of difference rectangular waveguides.
Waveguide port on the said difference rectangular waveguide can be positioned on the broadside or narrow limit of difference rectangular waveguide, and the waveguide port on the difference rectangular waveguide also can be positioned at the both sides or a side of difference rectangular waveguide.
Said path filter comprises resonant cavity, middle diaphragm, input adapter, input coupling ring adjusting contact pin, tuning screw, the fastener that input resonator body, main waveguide connect,
Said path filter adopts invar thin-walled cylindrical cavity dual mode filter, is 4 rank filters, and the input resonator body links to each other through the resonant cavity that middle diaphragm is connected with main waveguide, and utilizes fastener to link together;
The input resonator body is selected cylinder cylindrical cavity or ladder cylinder cylindrical cavity according to the needs of monofilm bandwidth of operation; Path filter is operated in pattern TE111 mould, and the centre of the resonant cavity height that is connected with main waveguide at the input resonator body and the broadside of waveguide port and the unidirectional position on narrow limit and the angular bisector position of this both direction are equipped with tuning screw; The intersection that cylindrical cavity and waveguide join on middle diaphragm and the resonant cavity that main waveguide is connected is diaphragm structure, and centre bit is equipped with the rectangle coupling aperture, and the direction of coupling aperture is identical with waveguide; Input adapter is installed on the top of input resonator body; Input coupling ring is regulated the sidewall that contact pin is installed on the input resonator body; Input adapter and input coupling ring are regulated contact pin and are cooperated the formation input coupling ring, and plane, coupling loop place is vertical with the direction at the waveguide broadside place of path filter.
The utility model compared with prior art has following advantage:
(1) the utility model path filter adopts invar thin-walled cylindrical cavity dual mode filter; Be different from cylindrical cavity filter commonly used; Resonant cavity has adopted ladder cylinder cylindrical cavity to replace cylinder cylindrical cavity commonly used according to the needs of monofilm bandwidth of operation; Guaranteeing that resonator Q value has lifting and cavity to be easy to effectively expand the bandwidth of operation of multiplexer under the situation of processing slightly.
(2) increase of number of active lanes sharply increases the electric emulation difficulty that makes multiplexer, and for example the optimization variable of 19 road output multiplexers reaches 209 at least, and the difficulty of its emulation and optimization is very high.And it is big in number of active lanes; Under the big situation of frequency band span; The precision that guarantees multiplexer emulation just needs the standing wave of interior each passage of difference rectangular waveguide of assurance multiplexer to mate the good fit that good, common waveguide ET knot is difficult to satisfy standing wave under the frequency large span, can't accomplish the design of large span multichannel output multiplexer; Compensation ET knot is in common waveguide ET knot, to have added compensation ET joint tuning screw; Can effectively improve the passage standing wave through tuning compensation ET joint tuning screw, the utility model adopts compensation ET knot to calculate first, has solved this technical barrier.
(3) on C frequency range output multiplexer brand-new design the input coupling, loop coupling mode (adopting the probe coupled modes in the past) has been adopted in the coaxial interface design, makes when satisfying high-power design, has improved the joint radiating efficiency.
Description of drawings
Fig. 1 is the S parameter amplitude curve of a typical quadravalence broad sense Chebyshev with two transmission zeros;
Fig. 2 is the transmission characteristic simulation curve of a typical C frequency range large span multichannel output multiplexer.
Fig. 3 is the overall structure sketch map of the utility model C frequency range large span multichannel output multiplexer;
Fig. 4 is the blast structural representation of the utility model C frequency range large span multichannel output multiplexer path filter;
Fig. 5 is the utility model path filter simulation architecture sketch map;
Fig. 6 is the cavity front schematic view of the utility model path filter;
Fig. 7 is the utility model path filter output coupling aperture computation model;
Fig. 8 is the utility model path filter I/O coupling group delay result of calculation;
Fig. 9 is a model for coupling between the utility model path filter chamber.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is further described in detail.
Design high power output multiplexer; At first choose suitable mode of resonance according to the centre frequency and the bandwidth of design; C frequency range output multiplexer has adopted the TE111 mould; The path filter that adopts is the quadravalence broad sense Chebyshev filter with a pair of transmission zero, and the comprehensive and typical broad sense Chebyshev filter of its coupling matrix is identical, and existing self-compiling program or business software can draw the coupling matrix of the path filter of index request.
The filter transfer curve of obtaining for coupling matrix like Fig. 1.Adopting self-compiling program or business software to be the basis with filter coupled matrix of multiplexer channel and rectangular waveguide transmission characteristic, be optimized design, in whole passage, reach matching properties preferably, is to optimize No. 19 multiplexer transfer curves that obtain like Fig. 2.
Like Fig. 3, Fig. 4, shown in Figure 5; The utility model provides a kind of C frequency range large span multichannel output multiplexer, comprises path filter 1, difference rectangular waveguide 2, short circuit face 3, base plate 4, support 5, trip bolt 6, compensation ET joint tuning screw 7 and phase place diaphragm 8.
Said path filter 1 adopts invar thin-walled cylindrical cavity dual mode filter; Be 4 rank filters, form by resonant cavity 12, middle diaphragm 13, input adapter 14, input coupling ring adjusting contact pin 15, tuning screw 16, fastener 17, cylindrical cavity support 18 that input resonator body 11, main waveguide connect.Form according to the needs selective resonance cavity of single mode operation bandwidth; Resonant cavity comprises the resonant cavity 12 that input resonator body 11 is connected with main waveguide; Form can be general cylindrical cavity or ladder cylindrical cavity, and selects the diameter and the length of cavity according to the requirement of resonance frequency.General for the convenience of processing be convenient to backup, the resonant cavity of the path filter 1 of different passages adopts the resonator of same diameter as much as possible on same multiplexer, adjusts the resonance frequency of filter cavity through the length that changes cavity.
The C frequency range output multiplexer operating frequency of full frequency band is at 3.4GHz～4.2GHz; The mode of operation of resonant cavity is two TE111 patterns that annex mould each other; And to guarantee that in this frequency range other pattern can not be operated in this frequency range; With the TE111 pattern be TM010 pattern and TM011 pattern at a distance of nearest pattern, wherein the resonance frequency of TE111 mould and TM011 mould is relevant with the long diameter in chamber, and the resonance frequency of TM010 pattern is only relevant with diameter.Can guarantee that through diameter and the cavity length that changes cavity the passage single mode operation bandwidth that is higher than 3.6GHz satisfies 3.4GHz～4.2GHz for general cylinder cylindrical cavity, and need use ladder cylinder cylindrical cavity to guarantee that the single mode operation bandwidth satisfies 3.4GHz～4.2GHz for the passage that is lower than 3.6GHz.The general diameter of selecting is between 60mm～78mm when selecting cavity diameter, and the general TM010 pattern resonance frequency that makes is lower than the TE111 pattern, makes TM011 pattern resonance frequency be higher than the TE111 pattern.The resonance frequency of selecting to require again behind the appropriate diameter calculates the length of cavity.
Like Fig. 5, the installation site of tuning screw 16 is typically chosen in broadside and the unidirectional position on narrow limit and the angular bisector position of this both direction of the waveguide mouth of the centre that is positioned at the resonant cavity height and path filter.Tuning screw 16 is used to regulate the frequency and the coupling of filter.Requirement according to the user can be designed to coaxial input or waveguide input to the mode of the signal of input resonator body 11 input, and what the utility model provided is coaxial input port, promptly adopts the form of joint to carry out the signal input.Input adapter 14 is regulated top and the sidewall that contact pin 15 is installed on input resonator body (11) respectively with input coupling ring, and input adapter 14 is regulated contact pin 15 with input coupling ring and cooperated the formation input coupling ring, and this plane, coupling loop place is vertical with the waveguide broadside.The form of general input adapter is that probe directly is coupled, and is field coupled, and probe is unsettled in inside cavity; Under high-power situation, heat is difficult to derive, because heat is concentrated; So be easy to burn joint, this has just limited the power capacity of multiplexer to a certain extent.The coupling loop form that the utility model adopts is the magnetic field coupling, and joint is being connected on the cavity wall after stretching into cavity, does not have vacant state, and heat is derived easily, when having satisfied high-power design, has improved the joint radiating efficiency.
The intersection of the last cylindrical cavity of the resonant cavity 12 that middle diaphragm 13 is connected with main waveguide and waveguide handing-over all is designed to diaphragm structure, and the center all is designed with the rectangle coupling aperture, and the direction of coupling aperture is identical with waveguide.Being designed with of rectangle coupling aperture is beneficial to the minimum clearance that increases coupling aperture, helps increasing the micro discharge surplus.
Waveguide port on the difference rectangular waveguide 2 can be positioned on broadside or the narrow limit; The both sides that waveguide port on the difference rectangular waveguide 2 can be positioned at difference rectangular waveguide 2 also can be positioned at a side of difference rectangular waveguide 2; Leave arrangement according to certain phase distance between the port of difference rectangular waveguide 2; Waveguide port in this example on the difference rectangular waveguide 2 is positioned at the broadside of waveguide; More help the realization of multiplexer performance, and waveguide port is positioned at the both sides of difference rectangular waveguide 2, can effectively reduces the length of difference rectangular waveguide 2.
Compensation ET joint tuning screw 7 is installed on the center position on each waveguide port opposite of difference rectangular waveguide 2, and it and phase place diaphragm 8 play the effect of regulating 1 phase place of path filter jointly; The utility model adopts compensation ET knot to accomplish electric emulation of output multiplexer and optimization first, and compensation ET joint helps realizing the coupling of multiplexer in broad frequency band.Compensation ET knot is in common waveguide ET knot, to have added compensation ET joint tuning screw, can effectively improve the passage standing wave through tuning compensation ET joint tuning screw.
Output multiplexer is coated with temperature control lacquer, conducting resinl, heat-conducting glue, and silver-plated at inner surface.Can improve the heat dissipation characteristics of product like this, improve the anti-electromagnetic leakage characteristic of product, improve the electrical characteristics of product.What wherein path filter 1 and difference waveguide 2 were used is the invar material, and support 5 has used aluminum.
The path filter of the utility model is the quadravalence broad sense Chebyshev filter with a pair of transmission zero; Comprehensive and the typical broad sense Chebyshev filter of its coupling matrix is identical, and existing self-compiling program can draw the filter coupled matrix that satisfies index request.The utility model filter, total input and output, main coupling, cross-couplings and four self couplings amount to eight coupling amounts, can corresponding in the coupling matrix of 6X6, find corresponding coupling amount.
The multiplexer of the utility model example is 19 road output multiplexers, has comprised 19 path filters, and 19 compensation ET joints have designed 24 supports as required
The simulation calculation of C frequency range large span multichannel output multiplexer may further comprise the steps:
1) as shown in Figure 6, utilize the character modules solver among commercial CST of simulation software or the HFSS, set up the resonant cavity model, through adjustment resonant cavity diameter and length, make resonant cavity resonance at required frequency, and have good Q value and single mode operation bandwidth.Because what calculate is an independently resonator, and in fact also need open coupling window, holds the resonance frequency that coupling window can reduce resonator, therefore should make resonance frequency here here a little more than required frequency.
2) for resonant cavity adds input coupling ring or output coupling window, utilize the group delay simulation method, the input and output group delay that corresponding coupling matrix calculates, the relation of group delay and input and output coupling amount does
M wherein
01For inputing or outputing coupling, B
ωBe bandwidth, τ (ω
0) be group delay; Adjustment coupling window size makes the group delay of emulation equate with the group delay that coupling matrix calculates.Draw the input coupling ring or the output coupling window size of filter, like Fig. 7 and Fig. 8.
3) calculating of coupling window adopts eigen mode to find the solution mode between the chamber.In simulation software, set up the model in two chambeies,, calculate the coupling amount between two chambeies through the character modules solver like Fig. 9.Difference between the pattern that coupling amount between two chambeies equals to find the solution, this value should equal the product of coupling coefficient and design bandwidth, that is: Coup=M
Ij* B
ω, M wherein
IjBe corresponding coupling coefficient; B
ωBe bandwidth, Coup is corresponding actual coupling amount.
4) after above-mentioned steps is accomplished; Need carry out whole emulation to path filter; Through step 1), step 2) and step 3) obtained initial filter size and window size; Can regulate each size repeatedly,, finally reach good simulation result through comparing the excellent size that slightly changes coupling window and frequency screw of S parameter.Can certainly adopt other method to carry out whole emulation.
5) accomplish the emulation of each path filter after, can obtain the performance characteristics of whole multiplexer through S parameter cascade, phase place and filter parameter are being finely tuned, obtain the good simulation result of final multiplexer.
Final the utility model can reach following performance parameter and index, as shown in table 1:
Table 1
The unspecified part of the utility model belongs to general knowledge as well known to those skilled in the art.
Claims (4)
1.C frequency range large span multichannel output multiplexer is characterized in that comprising: path filter (1), difference rectangular waveguide (2), short circuit face (3), trip bolt (6), compensation ET joint tuning screw (7), phase place diaphragm (8),
Said path filter (1) links to each other with the waveguide port of difference rectangular waveguide (2) through phase place diaphragm (8), and utilizes trip bolt (6) fixing, on each difference rectangular waveguide (2), can connect 1 to 6 path filter (1);
Said compensation ET joint tuning screw (7) is installed on the center on the waveguide port opposite of difference rectangular waveguide (2);
A plurality of difference rectangular waveguides (2) are interconnected to form one section; And on the port after difference waveguide (2) links to each other short circuit face (3) is installed; The port of the short circuit face of installation (3) is the output port of said multiplexer; Wherein, between the port that two difference rectangular waveguides (2) link to each other and between difference rectangular waveguide (2) and port that short circuit face (3) links to each other phase place diaphragm (8) is being installed.
2. C frequency range large span multichannel output multiplexer according to claim 1 is characterized in that: surpass 10 path filters (1) and be connected on a plurality of difference rectangular waveguides (2).
3. C frequency range large span multichannel output multiplexer according to claim 1; It is characterized in that: the waveguide port on the said difference rectangular waveguide (2) can be positioned on the broadside or narrow limit of difference rectangular waveguide (2), and the waveguide port on the difference rectangular waveguide (2) also can be positioned at the both sides or a side of difference rectangular waveguide (2).
4. C frequency range large span multichannel output multiplexer according to claim 1 and 2; It is characterized in that: said path filter (1) comprises resonant cavity (12), middle diaphragm (13), input adapter (14), input coupling ring adjusting contact pin (15), tuning screw (16), the fastener (17) that input resonator body (11), main waveguide connect
Said path filter (1) adopts invar thin-walled cylindrical cavity dual mode filter, is 4 rank filters, and input resonator body (11) links to each other through the resonant cavity (12) that middle diaphragm (13) is connected with main waveguide, and utilizes fastener (17) to link together;
Input resonator body (11) is selected cylinder cylindrical cavity or ladder cylinder cylindrical cavity according to the needs of monofilm bandwidth of operation; Path filter (1) is operated in pattern TE111 mould, and the centre of resonant cavity (12) height that is connected with main waveguide at input resonator body (11) and the broadside of waveguide port and the unidirectional position on narrow limit and the angular bisector position of this both direction are equipped with tuning screw (16); The intersection that the resonant cavity (12) that middle diaphragm (13) is connected with main waveguide is gone up cylindrical cavity and waveguide handing-over is diaphragm structure, and centre bit is equipped with the rectangle coupling aperture, and the direction of coupling aperture is identical with waveguide; Input adapter (14) is installed on the top of input resonator body (11); Input coupling ring is regulated the sidewall that contact pin (15) is installed on input resonator body (11); Input adapter (14) and input coupling ring are regulated contact pin (15) and are cooperated the formation input coupling ring, and plane, coupling loop place is vertical with the direction at the waveguide broadside place of path filter (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011202718742U CN202172113U (en) | 2011-07-28 | 2011-07-28 | C frequency range large span multichannel output multiplexer |
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| CN2011202718742U CN202172113U (en) | 2011-07-28 | 2011-07-28 | C frequency range large span multichannel output multiplexer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746158A (en) * | 2014-01-26 | 2014-04-23 | 成都赛纳赛德科技有限公司 | Waveguide multiplexer |
| CN109241582A (en) * | 2018-08-16 | 2019-01-18 | 北方天穹信息技术（西安）有限公司 | A kind of design method of V-band high-performance multiplexer |
-
2011
- 2011-07-28 CN CN2011202718742U patent/CN202172113U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746158A (en) * | 2014-01-26 | 2014-04-23 | 成都赛纳赛德科技有限公司 | Waveguide multiplexer |
| CN103746158B (en) * | 2014-01-26 | 2016-02-24 | 成都赛纳赛德科技有限公司 | waveguide multiplexer |
| CN109241582A (en) * | 2018-08-16 | 2019-01-18 | 北方天穹信息技术（西安）有限公司 | A kind of design method of V-band high-performance multiplexer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an spaceflight Hengxing precision electromechanical Co., Ltd. Assignor: China Academy of Space Technology (Xi'an) Contract record no.: 2014610000131 Denomination of utility model: C frequency range large span multichannel output multiplexer Granted publication date: 20120321 License type: Exclusive License Record date: 20140903 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120321 |