CN2932829Y - Radio frequency difference receiver - Google Patents
Radio frequency difference receiver Download PDFInfo
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- CN2932829Y CN2932829Y CN 200620072434 CN200620072434U CN2932829Y CN 2932829 Y CN2932829 Y CN 2932829Y CN 200620072434 CN200620072434 CN 200620072434 CN 200620072434 U CN200620072434 U CN 200620072434U CN 2932829 Y CN2932829 Y CN 2932829Y
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- reception device
- difference
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- poor reception
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Abstract
The utility model discloses a radio frequency sum-and-difference receiver, which comprises four sum-and-difference receivers, including sum coupling plate sum-and-difference signal coupling window, two import channels, difference channel and sum channel, the import channels of the first and the second sum-and-difference receivers are respectively connected with four imports, the import channels of the third sum-and-difference receiver are connected with the difference channels of the first and the second sum-and-difference receivers, the import channels of the fourth sum-and-difference receiver are connected with the sum channels of the first and the second sum-and-difference receivers, the sum channel of the third sum-and-difference receiver is connected with the sum pitching difference ports, the difference channel of the third sum-and-difference receiver is connected with the loading port, the sum channel of the fourth sum-and-difference receiver is connected with the port of sum channel, the difference channel of the fourth sum-and-difference receiver is connected with azimuth equation port, the sum coupling plate sum-and-difference signal coupling window is located in the central line of the sum channels, the sum coupling plate is arranged in the crossover position of the two import channels, the difference signal coupling window is provided on the contact wall of the import channel and the difference channel. The utility model has excellent capability and reasonable volume and size.
Description
Technical field
The utility model relates to a kind of radio frequency and poor reception device, and horizontal radio frequency and poor reception device in the dull and stereotyped slot antenna of especially a kind of radar belong to microwave antenna feeder technical field.
Background technology
That the dull and stereotyped vertically slot array (antenna) antenna of waveguide is widely used in is airborne, missile-borne and satellite antenna, in order to carry out the bidimensional precision angle, usually adopt bidimensional pulse angle measurement system, that is front is divided into four quadrant: A, B, C, D, and A+B+C+D is that ∑ and channel, A+B-(C+D) are Δ β trim channel for Δ α gun parallax channel, A+C-(B+D).In order to realize extracting with difference signal, often adopt radio frequency and poor reception device (double T) to realize that the right and left homophase enters the H arm in the above waveguide transmission system of L-band, form and signal, the anti-phase E arm that enters of the right and left forms difference signal.
Do not have in the ground radar system under the restriction of volume size, adopt vertical radio frequency and poor reception device (double T) usually.In airborne, missile-borne PD radar flat slot antenna, because volume, size and weight are subjected to strict restriction, therefore do not allow to adopt vertical radio frequency and poor reception device (double T), can only adopt horizontal radio frequency and poor reception device (double T).
In horizontal double T, horizontal radio frequency of using in the past and poor reception device (double T) because the defective in the design is very dissatisfactory with difference isolation, Insertion Loss and volume in 5% absolute bandwidth, all have certain limitation.
Summary of the invention
It is a kind of in 5% absolute bandwidth that the utility model provides, radio frequency that excellent performance and volume size are good and poor reception device.
The utility model adopts following technical scheme to solve its technical problem: the utility model is a kind of radio frequency and poor reception device, it comprise first and poor reception device, second and poor reception device, the 3rd and poor reception device and the 4th and the poor reception device, first and the poor reception device, second and the poor reception device, the 3rd and the poor reception device and the 4th and the poor reception device include with coupling piece and difference signal coupling window, input channel, difference passage and and passage; First and two input channels of poor reception device connect the first input end and second input respectively, second and two input channels of poor reception device connect the 3rd input and four-input terminal respectively, the 3rd and two input channels of poor reception device connect first and the poor reception device respectively, second and the poor passage of poor reception device, the 4th and two input channels of poor reception device connect first and the poor reception device respectively, second and the poor reception device and passage, the 3rd and the connecing and the trim port of poor reception device with passage, the 3rd and the poor passage of poor reception device connect load port, the the 4th and the connecing and access port of poor reception device, the 4th with passage and the poor passage of poor reception device connect the gun parallax port; With coupling piece and difference signal coupling window all be positioned at channel centerline on and coupling piece be located at the intersection of two input channels, the difference signal coupling window is located on the contacted conduit wall of input channel and difference passage.
Compare with prior art, the utlity model has following advantage:
Because in the utility model and coupling piece and difference signal coupling window all be positioned at channel centerline on, be located at the intersection of two input channels with coupling piece, the difference signal coupling window is located on the contacted conduit wall of input channel and difference passage, and such design is more reasonable.Through the Ansoft simulation optimization, in 5% absolute bandwidth, V.S.W.R≤2, be better than 30dB with the difference isolation, Insertion Loss is less than 0.1dB, and unbalance in phase is less than 1 °, from Fig. 5～Fig. 8 as seen, clearly should and the performance that produces of differential receiver more excellent, when input channel and the difference signal coupling window near when being provided with the difference channel match block performance further excellent stable.And export in the same side with channel, difference channel in this radio frequency and the differential receiver, two-layer up and down relying on recently, institute takes up space very little, and volume size is more good, be particularly useful for airborne and missile-borne PD radar flat slot array antenna and difference pulse network, carry out the angle measurement of bidimensional pulse.
Description of drawings
Fig. 1 is the structural network schematic diagram of the utility model embodiment.
Fig. 2 is the part figure of the utility model embodiment for radio frequency and poor reception device.
Fig. 3 is the utility model embodiment another local figure for radio frequency and poor reception device.
Fig. 4 is that the utility model embodiment is the A-A profile in radio frequency and the poor reception device.
Fig. 5 is a trim channel voltage standing-wave ratio of the present utility model.
Fig. 6 is gun parallax of the present utility model and trim isolation.
Fig. 7 is a gun parallax channel voltage standing wave of the present utility model.
Fig. 8 is of the present utility model and the channel voltage standing wave.
Embodiment
A kind of radio frequency and poor reception device, it comprises first and poor reception device 1, second and poor reception device 2, the 3rd and poor reception device 3 and the 4th and poor reception device 4, first and poor reception device 1, second and poor reception device 2, the 3rd and poor reception device 3 and the 4th and poor reception device 4 include with coupling piece 5 and difference signal coupling window 6, input channel 7,8, difference passage and and path 10; First and two input channels of poor reception device 1 connect the first input end 11 and second input 12 respectively, second and two input channels of poor reception device 2 connect the 3rd input 13 and four-input terminal 14 respectively, the 3rd and two input channels of poor reception device 3 connect first and poor reception device 1 respectively, second and the poor passage 91 of poor reception device 2,92, the 4th and two input channels of poor reception device 4 connect first and the poor reception device respectively, second and the poor reception device with passage 15,16, the 3rd and poor reception device 3 connect trim port one 7 with passage, the 3rd and the poor passage 93 of poor reception device connect load port 18, the 4th and the poor passage 94 that connects with access port 19, the four and poor reception device with passage of poor reception device 4 connect gun parallax port 20; With coupling piece 5 and difference signal coupling window 6 all be positioned at channel centerline on and coupling piece be located at the intersection of two input channels, the difference signal coupling window is located on the contacted conduit wall of input channel and difference passage.Input channel and the difference signal coupling window near be provided with difference channel match block 21. Input channel 7,8, the difference passage 9 and and path 10 be waveguide.
Claims (3)
1. radio frequency and poor reception device, it comprises first and poor reception device (1), second and poor reception device (2), the 3rd and poor reception device (3) and the 4th and poor reception device (4), first and poor reception device (1), second and poor reception device (2), the 3rd and poor reception device (3) and the 4th and poor reception device (4) includes and coupling piece (5) and difference signal coupling window (6), input channel (7,8), difference passage and and passage (10); First and two input channels of poor reception device (1) connect first input end (11) and second input (12) respectively, second and two input channels of poor reception device (2) connect the 3rd input (13) and four-input terminal (14) respectively, the 3rd and two input channels of poor reception device (3) connect first and poor reception device (1) respectively, second and the poor passage (91 of poor reception device (2), 92), the 4th and two input channels of poor reception device (4) connect first and the poor reception device respectively, second and the poor reception device and passage (15,16), the 3rd and poor reception device (3) connect trim port (17) with passage, the 3rd and the poor passage (93) of poor reception device connect load port (18), the the 4th and the connecing with passage and access port (19) of poor reception device (4), the 4th and the poor passage (94) of poor reception device connect gun parallax port (20); It is characterized in that: and coupling piece (5) and difference signal coupling window (6) all be positioned at channel centerline on and coupling piece be located at the intersection of two input channels, the difference signal coupling window is located on the contacted conduit wall of input channel and difference passage.
2. radio frequency according to claim 1 and poor reception device is characterized in that: input channel and the difference signal coupling window near be provided with difference channel match block (21).
3. radio frequency according to claim 1 and poor reception device is characterized in that: input channel (7,8), the difference passage (9) and and passage (10) be waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620072434 CN2932829Y (en) | 2006-04-21 | 2006-04-21 | Radio frequency difference receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620072434 CN2932829Y (en) | 2006-04-21 | 2006-04-21 | Radio frequency difference receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2932829Y true CN2932829Y (en) | 2007-08-08 |
Family
ID=38349318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620072434 Expired - Fee Related CN2932829Y (en) | 2006-04-21 | 2006-04-21 | Radio frequency difference receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2932829Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835285B (en) * | 2006-04-21 | 2010-05-12 | 南京璇星科技发展有限公司 | RF sum-difference receiver |
-
2006
- 2006-04-21 CN CN 200620072434 patent/CN2932829Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835285B (en) * | 2006-04-21 | 2010-05-12 | 南京璇星科技发展有限公司 | RF sum-difference receiver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 Termination date: 20100421 |