CN103915664B - Separation filter and waveguide - Google Patents
Separation filter and waveguide Download PDFInfo
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- CN103915664B CN103915664B CN201310001523.3A CN201310001523A CN103915664B CN 103915664 B CN103915664 B CN 103915664B CN 201310001523 A CN201310001523 A CN 201310001523A CN 103915664 B CN103915664 B CN 103915664B
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Abstract
A kind of separation filter and waveguide.This separation filter, for a waveguide, includes a power divider, is used for transmitting a transmission signal and one first cross polarization receives signal；One first low pass filter, is coupled to this power divider, is used for filtering this transmission signal, and transmits this first cross polarization reception signal；One connectivity port, is coupled to this power divider, has one first bending, is used for transmitting this transmission signal；And a high pass filter, it is coupled to this connectivity port, is used for filtering this first cross polarization and receives signal, and transmit this transmission signal.
Description
Technical field
The present invention relates to a kind of separation filter, particularly relate to a kind of by bending a high pass filter to reduce the separation filter of volume.
Background technology
It is vast and not by advantages such as ground environment interference that satellite communication has coverage, is widely used in military affairs, detection and commercial communications service such as satellite navigation, satellite voice is broadcasted or satellite television broadcasting etc..
In prior art, waveguide (Waveguide) is a kind of communication element being widely used in satellite communication transceiver.Such as, waveguide is used for transmitting satellite radio signal, and can be separated by the wireless signal of horizontal polarization orthogonal for polarised direction and vertical polarization so that it is by different output port output, process, in order to rear end transmitting-receiving processor, the wireless signal being intended to transmit or receive.
But, satellite communication transceiver is often set up at skin or higher spacious of physical features, in order to transmitting and the reception of satellite signals.Therefore, the volume of satellite communication transceiver should reduce as far as possible and alleviate its weight, the convenience of satellite communication transceiver is installed promoting engineering staff, and maintains toleration and the safety of satellite communication transceiver, in order to avoid satellite communication transceiver blowing and dropping in high wind.Therefore, waveguide and the volume of satellite communication transceiver entirety and weight how are reduced, it has also become one of target that industry is made great efforts.
Summary of the invention
Therefore, the main object of the present invention is i.e. to provide a kind of separation filter, by bending a high pass filter to reduce its area and volume.
The present invention discloses a kind of separation filter, for a waveguide, includes a power divider, is used for transmitting a transmission signal and a cross polarization receives signal；One low pass filter, is coupled to this power divider, is used for filtering this transmission signal, and transmits this cross polarization reception signal；One connectivity port, is coupled to this power divider, has one first bending, is used for transmitting this transmission signal；And a high pass filter, it is coupled to this connectivity port, is used for filtering this cross polarization and receives signal, and transmit this transmission signal.
The present invention also discloses a kind of waveguide, includes a separation filter；One power divider, is used for transmitting a transmission signal and one first cross polarization receives signal；One first low pass filter, is coupled to this power divider, is used for filtering this transmission signal, and transmits this first cross polarization reception signal；One connectivity port, is coupled to this power divider, has one first bending, is used for transmitting this transmission signal；And a high pass filter, it is coupled to this connectivity port, is used for filtering this first cross polarization and receives signal, and transmit this transmission signal；One transmission port, is coupled to this high pass filter, is used for inputting this transmission signal；One first receiving port, is used for receiving this first cross polarization and receives signal；One second receiving port, is used for receiving one second cross polarization and receives signal；One universal port, is used for exporting this transmission signal and input one reception signal；One second low pass filter, is coupled to this receiving port, is used for filtering this transmission signal and this first cross polarization receives signal, and transmit this second cross polarization reception signal to this second receiving port；And an orthomode transducer, it is coupled to this universal port, this second low pass filter and this separation filter, is used for transmitting this transmission signal and coordinating this second low pass filter that this reception signal is separated into this first cross polarization reception signal and this second cross polarization reception signal.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention one waveguide.
Fig. 2 is the detailed construction schematic diagram of the separation filter of embodiment of the present invention Fig. 1.
Fig. 3 is the analog quantity mapping inserting consume, return consume and transmission port and the isolation of receiving port of the transmission port of Fig. 1.
Fig. 4 is the analog quantity mapping inserting consume, return consume and receiving port and the isolation of transmission port of the receiving port of Fig. 1.
Reference numeral explanation
10 waveguides
11 hand over weighted-voltage D/A converter
13 separation filters
131 power dividers
132 connectivity ports
133 high pass filters
12,134 low pass filter
21 conducting parts
22,23,24 staged transducer
TX transmits signal
RX receives signal
RX2, RX1 hand over polarization reception signal
RP2, RP1 receiving port
TP transmits port
CMP universal port
B1, B2 bend
D1, D2 spacing
θ 1, θ 2 angle
CO ends reflecting surface
Detailed description of the invention
Refer to the schematic diagram that Fig. 1, Fig. 1 are the embodiment of the present invention one waveguide 10.Waveguide 10 can be used for a satellite communication transceiver, and it includes an orthomode transducer (OrthomodeTransducer) 11, low pass filter 12, separation filter (Diplexer) 13, one universal port CMP, receiving port RP2 and RP1 and a transmission port TP.Specifically, universal port CMP is used for exporting a transmission signal TX and input one reception signal RX.Orthomode transducer 11 is coupled to universal port CMP, low pass filter 12 and separation filter 13, is used for transmitting transmission signal TX and coordinating low pass filter 12 that reception signal RX is separated into cross polarization reception signal RX2 and RX1.Such as, it can be a horizontal polarization signal that cross polarization receives signal RX2, and cross polarization reception signal RX1 can be a vertical polarization signal.Low pass filter 12 is coupled between orthomode transducer 11 and receiving port RP2, is used for filtering transmission signal TX and cross polarization receives signal RX1, and transmit cross polarization reception signal RX2 to receiving port RP2.Separation filter 13 is coupled to orthomode transducer 11, it is used for coordinating low pass filter 134 to separate transmit signal TX and receive signal cross polarization reception signal RX1, to be transmitted signal TX by transmission port TP transmission, and cross polarization is received signal RX1 it is transferred to receiving port RP1.
Separation filter 13 includes power divider 131, connectivity port 132, high pass filter 133 and a low pass filter 134.Power divider 131 is coupled to orthomode transducer 11, is used for transmitting transmission signal TX and coordinating low pass filter 134 to be separated into cross polarization reception signal RX1.Low pass filter 134 is coupled to power divider 131, is used for filtering transmission signal TX, and transmits cross polarization reception signal RX1 to receiving port RP1.Connectivity port 132 is coupled to power divider 131, is used for transmitting transmission signal TX.High pass filter 133 is coupled to connectivity port 132, is used for filtering cross polarization and receives signal RX1, and is transmitted signal TX by transmission port TP transmission.
Consequently, it is possible to waveguide 10 can transmit wireless signal in a satellite communication transceiver, i.e. transmit signal TX and receive signal RX, and cross polarization reception signal RX2 and RX1 can be separated into by receiving signal RX so that it is being exported by receiving port RP2 and RP1 respectively.
Specifically, refer to the detailed construction schematic diagram that Fig. 2, Fig. 2 are embodiment of the present invention separation filter 13.Connectivity port 132 has a bending B1, can be equivalent to a signal reflecting surface, and the cross polarization for reflecting part receives signal RX1, therefore can improve the isolation (Isolation) between receiving port RP1 and transmission port TP.High pass filter 133 preferably bilateral staged (DoubleCorrugated) wave filter, it includes a conducting part 21 and staged transducer (CorrugatedTransformer) 22 and 23.Conducting part 21 includes multiple bending B2, makes high pass filter 133 in a serpentine shape.Staged transducer 22 is formed between one end of conducting part 21 and bending B1, is used for transmitting transmission signal TX, and is used as a cut-off reflecting surface CO of cross polarization reception signal RX1, it is to avoid cross polarization receives signal RX1 by high pass filter 133.Staged transducer 23 is formed at the other end of conducting part 21, transmits signal TX with cause transmission ends mouth TP transmission.Low pass filter 134 includes a staged transducer 24, and staged transducer 24 is formed between low pass filter 134 and power divider 131, is used for transmitting cross polarization and receives signal RX1.
Should be noted, staged transducer can be considered a matching element, it is arranged on the intersection that element is connected with element, by design different rank and stairstepping (the widest or tapered ladder bore), can be used to the equiva lent impedance between matching element and reduce signal attenuation.For example, staged transducer 22 is that second order, bore are from connectivity port 132 toward the shape that conducting part 21 is tapered；Staged transducer 23 is that quadravalence, bore are not plotted in Fig. 2 from conducting part 21 toward transmission port TP() the widest shape；Staged transducer 24 is that second order, bore are from power divider 131 toward the widest shape of low pass filter 134.The configuration mode of staged transducer does not limits, and designer can not use staged transducer, select single staged transducer 22,23 or 24 respectively according to actual demand, or select multiple staged transducer simultaneously.For example, designer can select staged transducer 22 and 23, simultaneously selection staged transducer 22 and 24, simultaneously selection staged transducer 23 and 24 etc. simultaneously.
Under such configuration, bending B1 and B2 makes high pass filter 133 in a serpentine shape, so can reduce the area shared by high pass filter 133, is equivalent to reduce separation filter 13 and the area of waveguide 10 entirety and volume, therefore can reduce its weight and manufacturing cost.Furthermore, bending B1 collocation staged transducer 22 can make cut-off reflecting surface CO reflection cross polarization receive the better of signal RX1, it is possible to improves the isolation between receiving port RP1 and transmission port TP.
In brief, the present invention mainly couples the connectivity port 132 with bending B1 between high pass filter 133 and power divider 131, except area and the volume of separation filter 13 entirety can be reduced, under the design of collocation staged transducer 22, it is possible to improve the isolation between receiving port RP1 and transmission port TP.Those skilled in the art can changes in modification according to this, and be not limited to the present embodiment.
For example, an angle, θ 1 of bending B1 can arbitrarily adjust.The quantity of multiple bending B2 does not limits, as in figure 2 it is shown, high pass filter 133 at least has two bending B2.One angle, θ 2 of bending B2 also can arbitrarily adjust.High pass filter 133 and low pass filter 134 are at a distance of a space D 1.At a distance of a space D 2 between two adjacent bend B2.Space D 1, D2 also can suitably adjust area and the volume of separation filter 13, to meet actual demand.
On the other hand, separation filter 13 can be T-shaped junction (T-junction-type) waveguide, is used for separating electric field plane (E-plane) or the wireless signal of H plane (H-plane).In other words, the special bending B1 design of the present invention can the low-frequency signal (i.e. cross polarization receive signal RX1) of reflecting part, make separation filter 13 separate equipolarization but the wireless signal of different frequency (i.e. cross polarization receives signal RX1 and transmission signal TX) has preferably effect.
Refer to Fig. 3, Fig. 3 and depict insertion consume (InsertionLoss) of transmission port TP, return consume (ReturnLoss) and the isolation of transmission port TP and receiving port RP1.Wherein inserting consume to represent with solid line, return consume represents with long dotted line, and isolation represents with short dash line.The operation frequency of transmission port TP is 13.75～14.5GHz.Form 1 is the measurement numerical value of Fig. 3:
Form 1
From form 1, transmission port TP has good usefulness in operation frequency, and the transmission signal TX inserting consume display at least 94.6% can be transferred to universal port CMP by transmission port TP.The return consume display transmission signal TX less than 1.16% reflexes to transmit port TP.The isolation of transmission port TP and receiving port RP1, close to 0%, transmits almost without signal between the two.
Refer to Fig. 4, Fig. 4 and depict the isolation inserting consume, return consume and receiving port RP1 and transmission port TP of receiving port RP1.Wherein inserting consume to represent with solid line, return consume represents with long dotted line, and isolation represents with short dash line.The operation frequency of receiving port RP1 is 10.7～12.75GHz.Form 2 is the measurement numerical value of Fig. 4:
Form 2
From form 2, receiving port RP1 has good usefulness in operation frequency, and the cross polarization reception signal RX1 inserting consume display at least 92.5% can be transferred to receiving port RP1 by universal port CMP.The return consume display cross polarization less than 0.85% receives signal RX1 and reflexes to receiving port RP1.The isolation of receiving port RP1 and transmission port TP, close to 0%, transmits almost without signal between the two.
In sum, the present invention mainly couples the connectivity port 132 with bending B1 between high pass filter 133 and power divider 131, except area and the volume of separation filter 13 entirety can be reduced, under the design of collocation staged transducer 22, cut-off reflecting surface CO reflection cross polarization can be made to receive the better of signal RX1, it is possible to improve the isolation between receiving port RP1 and transmission port TP.The design of multiple bending B1 and B2 can make high pass filter 133 in meandering shape, so can be reduced further by the area of high pass filter 133, is equivalent to reduce separation filter 13 and the area of waveguide 10 entirety and volume.Therefore, the present invention can reduce separation filter 13 and the weight of waveguide 10 and manufacturing cost, and promote engineering staff and install the convenience of satellite communication transceiver, also maintains toleration and the safety of satellite communication transceiver.
The foregoing is only presently preferred embodiments of the present invention, equalization change and the modification that all claim under this invention is done, all should belong to the covering scope of the present invention.
Claims (8)
1. a separation filter, for a waveguide, includes:
One power divider, is used for transmitting a transmission signal and one first cross polarization receives signal；
One first low pass filter, is coupled to this power divider, is used for filtering this transmission signal, and transmits this first cross polarization reception signal；
One connectivity port, is coupled to this power divider, has one first bending, is used for transmitting this transmission signal；And
One high pass filter, is coupled to this connectivity port, is used for filtering this first cross polarization and receives signal, and transmits this transmission signal,
Wherein this high pass filter includes:
One conducting part, includes multiple second bending, and making this high pass filter is a serpentine shape；
One first staged transducer, is formed between one end of this conducting part and this first bending, is used for transmitting this transmission signal, and is used as a cut-off reflecting surface of this first cross polarization reception signal；And
One second-order ladder type transducer, is formed at the other end of this conducting part, is used for transmitting this transmission signal.
2. separation filter as claimed in claim 1, the most the plurality of second bends a spacing apart.
3. separation filter as claimed in claim 1, wherein this first low pass filter includes the 3rd staged transducer, 3rd staged transducer is formed between this first low pass filter and this power divider, is used for transmitting this first cross polarization and receives signal.
4. separation filter as claimed in claim 1, wherein has a spacing between this high pass filter and this first low pass filter.
5. a waveguide, includes:
One separation filter；
One power divider, is used for transmitting a transmission signal and one first cross polarization receives signal；
One first low pass filter, is coupled to this power divider, is used for filtering this transmission signal, and transmits this first cross polarization reception signal；
One connectivity port, is coupled to this power divider, has one first bending, is used for transmitting this transmission signal；And
One high pass filter, is coupled to this connectivity port, is used for filtering this first cross polarization and receives signal, and transmits this transmission signal；
One transmission port, is coupled to this high pass filter, is used for inputting this transmission signal；
One first receiving port, is used for receiving this first cross polarization and receives signal；
One second receiving port, is used for receiving one second cross polarization and receives signal；
One universal port, is used for exporting this transmission signal and input one reception signal；
One second low pass filter, is coupled to this receiving port, is used for filtering this transmission signal and this first cross polarization receives signal, and transmit this second cross polarization reception signal to this second receiving port；And
One orthomode transducer, it is coupled to this universal port, this second low pass filter and this separation filter, it is used for transmitting this transmission signal and coordinating this second low pass filter that this reception signal is separated into this first cross polarization reception signal and this second cross polarization reception signal
Wherein this high pass filter includes:
One conducting part, includes multiple second bending, and making this high pass filter is a serpentine shape；
One first staged transducer, is formed between one end of this conducting part and this first bending, is used for transmitting this transmission signal, and is used as a cut-off reflecting surface of this first cross polarization reception signal；And
One second-order ladder type transducer, is formed at the other end of this conducting part, is used for transmitting this transmission signal.
6. waveguide as claimed in claim 5, the most the plurality of second bends a spacing apart.
7. waveguide as claimed in claim 5, wherein this first low pass filter includes the 3rd staged transducer, and the 3rd staged transducer is formed between this first low pass filter and this power divider, is used for transmitting this first cross polarization and receives signal.
8. waveguide as claimed in claim 5, wherein has a spacing between this high pass filter and this first low pass filter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310001523.3A CN103915664B (en) | 2013-01-04 | 2013-01-04 | Separation filter and waveguide |
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|---|---|---|---|
| CN201310001523.3A CN103915664B (en) | 2013-01-04 | 2013-01-04 | Separation filter and waveguide |
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| CN103915664A CN103915664A (en) | 2014-07-09 |
| CN103915664B true CN103915664B (en) | 2016-08-03 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605136A (en) * | 2001-10-22 | 2005-04-06 | 胜利微波股份有限公司 | Multiple-channel feed network |
| CN202841117U (en) * | 2012-10-15 | 2013-03-27 | 启碁科技股份有限公司 | Radio frequency transmitter-receiver set |
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- 2013-01-04 CN CN201310001523.3A patent/CN103915664B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605136A (en) * | 2001-10-22 | 2005-04-06 | 胜利微波股份有限公司 | Multiple-channel feed network |
| CN202841117U (en) * | 2012-10-15 | 2013-03-27 | 启碁科技股份有限公司 | Radio frequency transmitter-receiver set |
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| CN103915664A (en) | 2014-07-09 |
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