CN202841117U - Radio frequency transmitter-receiver set - Google Patents
Radio frequency transmitter-receiver set Download PDFInfo
- Publication number
- CN202841117U CN202841117U CN2012205270520U CN201220527052U CN202841117U CN 202841117 U CN202841117 U CN 202841117U CN 2012205270520 U CN2012205270520 U CN 2012205270520U CN 201220527052 U CN201220527052 U CN 201220527052U CN 202841117 U CN202841117 U CN 202841117U
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- Prior art keywords
- receiving
- transmission device
- waveguide pipe
- signal
- circuit board
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Abstract
Disclosed is a radio frequency transmitter-receiver set. The radio frequency transmitter-receiver set is used for a wireless communication system. The radio frequency transmitter-receiver set comprises a shell body, a first printed circuit board, a second printed circuit board and a wave guide body. The first printed circuit board is arranged on a first surface of the shell body. The second printed circuit board is arranged on a second surface of the shell body and is used for processing received signals in cooperation with the first printed circuit board. The wave guide body is connected with the shell body. The wave guide body comprises an orthogonal mode switch, a first low-pass filter and a separation filter. The orthogonal mode switch comprises a universal port used for transferring transmitted signals and received signals. The first low-pass filter is connected with the same polarization port of the orthogonal mode switch in a coupled mode. The separation filter is connected with the orthogonality polarization port of the orthogonal mode switch in a coupled mode, and is used for separating the transmitted signals and received signals in cooperation with the first low-pass filter. The connection mode between the shell body and the wave guide body is of an L shape roughly. The radio frequency transmitter-receiver set is capable of reducing signal bandwidth attenuation. The waterproof aim is achieved further.
Description
Technical field
The utility model relates to a kind of RF receiving/transmission device, espespecially a kind ofly reduces the signal bandwidth decay that waveguide pipe causes, and also can reach the RF receiving/transmission device of waterproof purpose.
Background technology
Satellite communication has the vast advantages such as not being subjected to the ground environment interference that reaches of coverage, is widely used in military affairs, detection and business telecommunication service, such as satellite navigation, satellite voice broadcast service or satellite television broadcasting etc.In known technology, waveguide pipe (Waveguide) is a kind of communications component that is widely used in the satellite communication transceiver.For example, traditional satellite communication transceiver includes an antenna (Antenna), a waveguide pipe and a transmitting-receiving housing (Transceiver housing), the satellite radio signal that send or receive to process tendency to develop, wherein waveguide pipe is one of main spare part, be used for transmitting wireless signal, and the wireless signal of two polarised direction quadratures can be separated, make it by different output port output.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of a known RF receiving/transmission device 10.RF receiving/transmission device 10 includes an antenna 100, a waveguide pipe 102 and a transmitting-receiving housing 104.Antenna 100 is used for sending one and transmits signal and receive signal.Waveguide pipe 102 is used for transmitting and isolation transmits signal and receives signal, wherein transmits signal and receive signal to be formed by combining by different polarity, frequency or time diversity.Be coupled to waveguide pipe 102 as for 104 of housings of transmitting-receiving, be used for carrying out relevant signal handler.
Yet, waveguide pipe and transmitting-receiving housing are two stand-alone assemblies, therefore the combination of waveguide pipe and transmitting-receiving housing needs by again assembling, assembling process can produce a junction, drainage easily occurs in this junction, and also may cause waveguide pipe crooked thereby cause the signal bandwidth decay for the purpose that reaches assembling.In addition, oblique angle or baffle design are adopted in the design of traditional waveguide pipe, but oblique angle design can cause the waveguide pipe size oversize, and baffle design also can cause reaching broadband effects.Therefore, how to reduce the signal bandwidth decay that waveguide pipe causes, become one of target that industry makes great efforts.
Thereby, need to provide a kind of RF receiving/transmission device to solve the problems referred to above.
The utility model content
Therefore, the utility model mainly provides a kind of RF receiving/transmission device, and it can reduce the signal bandwidth decay that waveguide pipe causes and reach the waterproof purpose.
The utility model discloses a kind of RF receiving/transmission device, and this RF receiving/transmission device is used for a wireless communication system, and this RF receiving/transmission device comprises: a housing; One first printed circuit board (PCB), this first printed circuit board (PCB) is arranged at a first surface of this housing; One second printed circuit board (PCB), this second printed circuit board (PCB) are arranged at one second of this housing, are used for cooperating this first printed circuit board (PCB) to process one and receive signal; And a waveguide pipe body, this waveguide pipe body is connected in this housing, and this waveguide pipe body comprises: an orthomode transducer, this orthomode transducer comprises a universal port, and this universal port is used for transmitting one and transmits signal and this reception signal; One first low pass filter, this first low pass filter coupled is in a same polarization port of this orthomode transducer; And a separation filter, this separation filter is coupled to an orthogonal polarization port of this orthomode transducer, is used for cooperating this first low pass filter to separate this transmission signal and this reception signal; Wherein, the connected mode of this housing and this waveguide pipe body roughly is a L shaped shape.
It is crooked to reduce the signal bandwidth decay that the utility model can make the waveguide pipe body avoid by L shaped and integrated connected mode, also two printed circuit board (PCB)s can the be placed in two sides of housing, the local oscillator that separately two frequencies of oscillation are different by this is to avoid that signal is caused interference; In addition, the outside that utilizes over cap to be covered in RF receiving/transmission device also can avoid the inter-module junction easily to cause the common fault of leaking.Therefore, the signal bandwidth decay of the utility model except reducing waveguide pipe and causing also can further reach the purpose of waterproof.
Description of drawings
Fig. 1 is the schematic diagram of a known RF receiving/transmission device.
Fig. 2 is the schematic diagram of the RF receiving/transmission device of the utility model embodiment.
Fig. 3 is the detailed structure schematic diagram of the waveguide pipe body among Fig. 2.
Fig. 4 is the schematic diagram of the orthomode transducer among Fig. 2.
Fig. 5 is the schematic diagram of function mode of the waveguide pipe body of Fig. 3.
Fig. 6 is the bandwidth-reflection loss Relationship Comparison figure of receiving terminal of the orthomode transducer of the waveguide pipe body of Fig. 3 and traditional waveguide pipe.
Fig. 7 is the bandwidth-reflection loss Relationship Comparison figure of the orthomode transducer of Fig. 4.
The primary clustering symbol description:
10 RF receiving/transmission devices
100 antennas
102 waveguide pipe
104 transmitting-receiving housings
20 RF receiving/transmission devices
200 housings
202 waveguide pipe bodies
204 first printed circuit board (PCB)s
206 second printed circuit board (PCB)s
208 orthomode transducers
210 separation filters
212 first dividing plates
214 first over caps
216 second partitions
218 second over caps
220 waveguide pipe loam cakes
222 waveguide pipe over caps
224 universal ports
226 first low pass filters
VT transmits signal
VR receives signal
300 high pass filters
302 second low pass filters
304 delivery port
306 first receiving ports
308 second receiving ports
The X horizontal direction
The Y vertical direction
The S cross section
L1～L4 the first edge～the 4th edge
400 same polarization ports
402 orthogonal polarization ports
The VR1 same polarization receives signal
The VR2 orthogonal polarization receives signal
Embodiment
Please refer to Fig. 2, Fig. 2 is the schematic diagram of the RF receiving/transmission device 20 of the utility model embodiment.RF receiving/transmission device 20 is used for such as wireless communication systems such as satellite voice broadcast service or satellite television broadcasting, and it is mainly by a housing 200 and 202 formations of a waveguide pipe body (Waveguide), and both connect in the mode of approximate vertical, and are formed in one.In other words, it is one L shaped that the connection shape of housing 200 and waveguide pipe body 202 roughly is, and do not connect junction between the two.RF receiving/transmission device 20 also includes one first printed circuit board (PCB) (Printed Circuit Board), 204 and 1 second printed circuit board (PCB) 206, is arranged at respectively the relative two sides of housing 200, is used for cooperatively interacting to process one and receives signal V
R202 of waveguide pipe bodies include an orthomode transducer (Orthomode Transducer) 208,1 first low pass filter 226 and a separation filter (Diplexer) 210.Wherein, orthomode transducer 208 includes a universal port 224, is used for transmitting one and transmits signal V
TAnd reception signal V
RThe first low pass filter 226 is coupled to a same polarization port (will illustrate) of orthomode transducer 208 in Fig. 4.Separation filter 210 then is coupled to an orthogonal polarization port (will illustrate) of orthomode transducer 208 in Fig. 4, be used for cooperating the first low pass filter 226 to separate and transmit signal V
TAnd reception signal V
RIn addition, RF receiving/transmission device 20 also includes one first dividing plate 212, a second partition 216, one first over cap 214, one second over cap 218, a waveguide pipe loam cake 220 and a waveguide pipe over cap 222.The first dividing plate 212 is covered on the first printed circuit board (PCB) 204, and the first over cap 214 is covered on the first dividing plate 212.And second partition 216 is covered on the second printed circuit board (PCB) 206, and the second over cap 218 is covered on the second partition 216.220 one sides that are covered in waveguide pipe body 202 of waveguide pipe loam cake are to consist of a complete waveguide pipe.Waveguide pipe over cap 222 is covered on the waveguide pipe loam cake 220.
In brief, produce drainage for fear of waveguide pipe and housing because again assembling, even cause waveguide pipe crooked and cause the signal bandwidth decay, the housing 200 of the utility model embodiment and waveguide pipe body 202 connect and are formed in one in L shaped mode roughly, therefore, waveguide pipe body 202 can avoid causing bending because of assembling.The relative two sides of housing 200 and the first printed circuit board (PCB) 204 and the second printed circuit board (PCB) 206 also can be placed in, thus, not only can reduce the signal bandwidth decay, also the local oscillator of two different frequencies of oscillation that interlock circuit is required is placed in the first dividing plate 212 and the second partition 216 by this, to avoid that signal is caused interference.In addition, the top of the two side faces of housing 200 and waveguide pipe body 202 is the covering protection lid all, the common fault that can avoid the inter-module junction easily to leak.
Please continue with reference to figure 3, Fig. 3 is the detailed structure schematic diagram of the waveguide pipe body 202 of Fig. 2.As shown in Figure 3, waveguide pipe body 202 comprises orthomode transducer 208, the first low pass filter 226 and separation filter 210.Orthomode transducer 208 is used for separating reception signal V
RSame polarization receive signal V
R1, receive signal V
ROrthogonal polarization receive signal V
R2And transmission signal V
TAnd the first low pass filter 226 is used for filtering transmission signal V
T, and filter out same polarization reception signal V
R1, and by one first receiving port, 306 output same polarizations reception signal V
R1In addition, separation filter 210 includes a high pass filter 300 and one second low pass filter 302.High pass filter 300 is used for filtering reception signal V
R, and will transmit signal V by a delivery port 304
TBe passed to orthomode transducer 208.Also be used for filtering transmission signal V as for the second low pass filter 302
T, be different from the first low pass filter 226 parts and be that the second low pass filter 302 is used for filtering out reception signal V
ROrthogonal polarization receive signal V
R2, and by one second receiving port, 308 output orthogonals polarization reception signal V
R2Therefore, can signal V will be received respectively by the first receiving port 306 and the second receiving port 308
RSame polarization receive signal V
R1And orthogonal polarization receives signal V
R2Export the first printed circuit board (PCB) 204 and the second printed circuit board (PCB) 206 to, to carry out follow-up signal handler.
In addition, orthomode transducer 208 roughly is a rectangular shape, and as shown in Figure 4, the width of orthomode transducer 208 is taked interim convergent, length and highly then not changing with width change.In other words, on a section S of orthomode transducer 208, the one first edge L1 that is parallel to each other on the horizontal direction X and the stepped convergent of one the 3rd edge L3, the one second edge L2 that is parallel to each other on the vertical direction Y and one the 4th edge L4 then do not change thereupon.In addition, orthomode transducer 208 includes a same polarization port 400 and an orthogonal polarization port 402, and orthomode transducer 208 can will receive signal V by same polarization port 400
RSame polarization receive signal V
R1Export the first low pass filter 226 to, and can will receive signal V by orthogonal polarization port 402
ROrthogonal polarization receive signal V
R2 Export separation filter 210 to and will transmit signal V
TBe passed to orthomode transducer 208.
The function mode of RF receiving/transmission device 20 should be known in the art, thus below be divided into and transmit and receive two parts and cooperate Fig. 5 to be summarized as follows.For transfer operation, RF receiving/transmission device 20, transmits and transmits signal V again by high pass filter 300 by delivery port 304
TTo orthomode transducer 208, and the universal port 224 that correctly leads.The first low pass filter 226 and the second low pass filter 302 will stop transmission signal V
TEnter the first receiving port 306 and the second receiving port 308.And for receiving operation, 20 of RF receiving/transmission devices pass through universal port 224 and transmit reception signal V
RTo orthomode transducer 208, will receive signal V by orthomode transducer 208 again
RSame polarization receive signal V
R1The first low pass filter 226 and will receive signal V correctly leads
ROrthogonal polarization receive signal V
R2The second low pass filter 302 leads; Then utilize the first low pass filter 226 and the second low pass filter 302 to filter out respectively and receive signal V
RSame polarization receive signal V
R1And orthogonal polarization receives signal V
R2, will receive signal V respectively by the first receiving port 306 and the second receiving port 308 again
RSame polarization receive signal V
R1And orthogonal polarization receives signal V
R2Export the first printed circuit board (PCB) 204 and the second printed circuit board (PCB) 206 to, to carry out follow-up signal handler.
Please continue with reference to figure 6, Fig. 6 is the bandwidth (GHz)-reflection loss (dB) Relationship Comparison figure of waveguide pipe body 202 with the receiving terminal of the orthomode transducer of traditional waveguide pipe of Fig. 3.Solid line among Fig. 6 is the bandwidth-reflection loss relation curve of receiving terminal of the orthomode transducer 208 of waveguide pipe body 202, and dotted line then is the bandwidth-reflection loss relation curve of receiving terminal of the orthomode transducer of a traditional waveguide pipe.As shown in Figure 6, the bandwidth efficiency of orthomode transducer 208 can reach 18.7%, it is higher than the bandwidth efficiency 15.5% of the orthomode transducer of this tradition waveguide pipe, hence one can see that, the signal bandwidth decay of its orthomode transducer can be effectively lowered in the design of the waveguide pipe body of the utility model embodiment, to reach broadband effects.
Please in addition with reference to figure 7, Fig. 7 is the bandwidth-reflection loss Relationship Comparison figure of the orthomode transducer 208 of Fig. 4.Orthomode transducer 208 is realized by the staged orthomode transducer on one or three rank, solid line among Fig. 7 is the transmission end of orthomode transducer 208 and the bandwidth of orthogonal polarization receiving terminal-reflection loss relation curve, and dotted line then is the bandwidth-reflection loss relation curve of the same polarization receiving terminal of orthomode transducer 208.As shown in Figure 7, the staged orthomode transducer 208 on these three rank in reflection loss (return loss) is-bandwidth efficiency during 20dB can be up to 32%, hence one can see that, and stepped design can effectively lower the signal bandwidth decay of orthomode transducer, to reach broadband effects.
Briefly, oversize and can't reach broadband effects for fear of the orthomode transducer size of waveguide pipe, the orthomode transducer 208 of the utility model embodiment can adopt three rank staged frameworks, not only can minification, and the signal bandwidth decay that can effectively lower orthomode transducer, to reach broadband effects.
Should be noted, RF receiving/transmission device 20 is embodiment of the present utility model, and those of ordinary skill in the art should do different modifications according to this, and is not limited to this.For instance, orthomode transducer 208 realized with the staged orthomode transducer on one or three rank, and the staged orthomode transducer that they can also other exponent numbers replaces it.On the other hand, the connection angle of housing 200 and waveguide pipe body 202 roughly is 90 degree, main purpose is to make the waveguide pipe body not crooked, therefore, take this purpose as prerequisite, the connection angle of housing 200 and waveguide pipe body 202 can the person of being used in conjunction with demand and be adjusted to the angles that are greater than or less than 90 degree, and not limit by this.In addition, the first over cap 214, the second over cap 218 and waveguide pipe over cap 222 can be made of sheet metal component, but are not limited to this.
In known technology, the combination of waveguide pipe and housing is by again assembling, easily produce drainage, also may cause the waveguide pipe bending and cause the signal bandwidth decay, and the design of traditional waveguide pipe adopts oblique angle or baffle design, causes the waveguide pipe size oversize or can't reach broadband effects.By contrast, the utility model adopts roughly L shaped mode in conjunction with waveguide pipe and housing, can avoid on the one hand the waveguide pipe bending to reach the purpose that reduces the signal bandwidth decay, the two sides that printed circuit board (PCB) can be divided on the other hand two and the housing that is placed in, the local oscillator that separately two frequencies of oscillation are different by this is to avoid that signal is caused interference.And the utility model utilizes the staged orthomode transducer to realize waveguide pipe, not only dwindles the waveguide pipe size, also can reduce further the signal bandwidth decay.In addition, the utility model is realized RF receiving/transmission device in integrated mode, and adds over cap in the outside of RF receiving/transmission device, can reach the purpose of waterproof.
In sum, by L shaped and integrated connected mode the waveguide pipe body is avoided crooked to reduce the signal bandwidth decay, also two printed circuit board (PCB)s can the be placed in two sides of housing, the local oscillator that separately two frequencies of oscillation are different by this is to avoid that signal is caused interference.In addition, the outside that utilizes over cap to be covered in RF receiving/transmission device also can avoid the inter-module junction easily to cause the common fault of leaking.Therefore, by RF receiving/transmission device of the present utility model, except reducing the signal bandwidth decay that waveguide pipe causes, also can further reach the purpose of waterproof.
The above only is preferred embodiment of the present utility model, and every equivalent variations and modification of doing according to the scope of the utility model claims all should belong to covering scope of the present utility model.
Claims (10)
1. RF receiving/transmission device, this RF receiving/transmission device is used for a wireless communication system, and this RF receiving/transmission device comprises:
One housing; And
One first printed circuit board (PCB), this first printed circuit board (PCB) is arranged at a first surface of this housing;
It is characterized in that, this RF receiving/transmission device also comprises one second printed circuit board (PCB), and this second printed circuit board (PCB) is arranged at one second of this housing, is used for cooperating this first printed circuit board (PCB) to process one and receives signal; And
One waveguide pipe body, this waveguide pipe body is connected in this housing, and this waveguide pipe body comprises:
One orthomode transducer, this orthomode transducer comprises a universal port, this universal port is used for transmitting one and transmits signal and this reception signal;
One first low pass filter, this first low pass filter coupled is in a same polarization port of this orthomode transducer; And
One separation filter, this separation filter are coupled to an orthogonal polarization port of this orthomode transducer, are used for cooperating this first low pass filter to separate this transmission signal and this reception signal;
Wherein, the connected mode of this housing and this waveguide pipe body roughly is a L shaped shape.
2. RF receiving/transmission device as claimed in claim 1 is characterized in that, this housing and this waveguide pipe body are integrated housing and waveguide pipe body.
3. RF receiving/transmission device as claimed in claim 1 is characterized in that, this orthomode transducer roughly is a rectangular shape.
4. RF receiving/transmission device as claimed in claim 1, it is characterized in that, cross section perpendicular to a transmission direction of this reception signal of this orthomode transducer comprises one first edge and one the 3rd edge in a horizontal direction, and comprise one second edge and one the 4th edge in a vertical direction, this first edge and the 3rd edge receive the transmission direction of signal and stepped convergent along this.
5. RF receiving/transmission device as claimed in claim 4 is characterized in that, this second edge and the 4th edge do not receive the transmission direction of signal and convergent along this.
6. RF receiving/transmission device as claimed in claim 1, it is characterized in that, this first low pass filter is to filter this transmission signal, and filters out the same polarization reception signal of this reception signal, and exports the first low pass filter that this same polarization receives signal by one first receiving port.
7. RF receiving/transmission device as claimed in claim 1 is characterized in that, this separation filter comprises:
One high pass filter, this high pass filter are used for filtering this reception signal, and transmit this transmission signal by a delivery port; And
One second low pass filter, this second low pass filter is used for filtering this transmission signal, and filters out the orthogonal polarization reception signal of this reception signal, and exports this orthogonal polarization reception signal by one second receiving port.
8. RF receiving/transmission device as claimed in claim 1 is characterized in that, this RF receiving/transmission device also comprises one first dividing plate and one first over cap, and this first dividing plate is covered on this first printed circuit board (PCB), and this first over cap is covered on this first dividing plate.
9. RF receiving/transmission device as claimed in claim 1 is characterized in that, this RF receiving/transmission device also comprises a second partition and one second over cap, and this second partition is covered on this second printed circuit board (PCB), and this second over cap is covered on this second partition.
10. RF receiving/transmission device as claimed in claim 1; it is characterized in that; this RF receiving/transmission device also comprises a waveguide pipe loam cake and a waveguide pipe over cap, and this waveguide pipe loam cake is covered in the one side of this waveguide pipe body, and this waveguide pipe over cap is covered on this waveguide pipe loam cake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205270520U CN202841117U (en) | 2012-10-15 | 2012-10-15 | Radio frequency transmitter-receiver set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205270520U CN202841117U (en) | 2012-10-15 | 2012-10-15 | Radio frequency transmitter-receiver set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202841117U true CN202841117U (en) | 2013-03-27 |
Family
ID=47952711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205270520U Expired - Fee Related CN202841117U (en) | 2012-10-15 | 2012-10-15 | Radio frequency transmitter-receiver set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202841117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915664A (en) * | 2013-01-04 | 2014-07-09 | 启碁科技股份有限公司 | Separation filter and waveguide pipe |
-
2012
- 2012-10-15 CN CN2012205270520U patent/CN202841117U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915664A (en) * | 2013-01-04 | 2014-07-09 | 启碁科技股份有限公司 | Separation filter and waveguide pipe |
| CN103915664B (en) * | 2013-01-04 | 2016-08-03 | 启碁科技股份有限公司 | Separation filter and waveguide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20191015 |