CN101803211A - Satellite signal reception converter - Google Patents
Satellite signal reception converter Download PDFInfo
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- CN101803211A CN101803211A CN200880108268.XA CN200880108268A CN101803211A CN 101803211 A CN101803211 A CN 101803211A CN 200880108268 A CN200880108268 A CN 200880108268A CN 101803211 A CN101803211 A CN 101803211A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0266—Waveguide horns provided with a flange or a choke
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Abstract
A satellite signal reception converter wherein a case with which a waveguide constituting a primary radiator is integrally formed accommodates a board on which a converter circuit part including reception probes is formed. In the converter circuit part having the horizontal and vertical polarization probes, two signal paths extending from a pair of feeding points of the respective probes, which amplify RF signals received by the probes, to first RF transmission lines have nearly equal path lengths. Further, the line lengths of a pair of first input lines constituting the first RF transmission lines are established such that the reactance component in a case where a first RF amplifier circuit, which is in an inactive state, is seen from a first mutual connection point is nearly zero.
Description
Technical field
The present invention relates in the parabolic antenna that receives from the transmission electric wave of satellite, be used to receive the satellite signal reception converter (converter) of the electric wave of the electric wave of horizontal polarized wave and vertically polarized wave.
Background technology
In the past, as the satellite signal reception converter that receives from the transmission electric wave of a plurality of satellites, proposed in the shell main body, to be provided with integratedly the waveguide of formation corresponding to the once-used emitter of each satellite, and receive the satellite signal reception converter (for example, with reference to patent documentation 1 etc.) of the substrate that formed the converter circuit part at this shell body matter.
Satellite signal reception converter according to this motion, the substrate printing detector (probe) that forms owing to the opening portion that on substrate, has formed corresponding to each once-used emitter, so structure becomes simply, can realize that the cost of satellite signal reception converter descends and miniaturization.
For example as shown in Figure 7, at the satellite signal reception converter that is used for receiving from the signal of two satellites, formed the substrate printing detector 2 that opening portion corresponding to each once-used emitter forms, is made of with detector 2a and perpendicular polarization wave detector 2b horizontal polarized wave on substrate 23, the signal that takes out by these detectors 2a, 2b amplifies in high frequency (RF) amplifying circuit 3a, 3b to be selected by horizontal/ vertical diverter switch 4a, 4b afterwards.
In RF amplifying circuit 6, amplified after should further selecting by the signal that horizontal/ vertical diverter switch 4a, 4b select, and be input in the frequency changer 7 by satellite diverter switch 5.In this frequency changer 7, the vibration output of input local oscillator 8.Frequency changer 7 will be exported as intermediate frequency signal from the received signal of RF amplifying circuit 6 and frequency signal from the difference of the signal of local oscillator 8.Exported from terminal 10 after should intermediate frequency signal amplifying circuit 9, amplifying from the signal of frequency changer 7 outputs.
Patent documentation 1: the spy opens flat 10-173562 communique
Summary of the invention
The problem that invention will solve
But,,, use three HF switch that constitute by horizontal/ vertical diverter switch 4a, 4b, satellite diverter switch 5 for receiving the signal of the satellite of wishing reception according to above-mentioned satellite signal reception converter in the past.
But (for example, the signal of 12GHz band the cost of) HF switch is very high, so the problem that exists the product cost of satellite signal reception converter (and then parabolic antenna) to uprise can directly to switch received signal from the electric wave of satellite.
In addition, because HF switch is the switch that switches the path of received signal, so produce following problem: received signal produces by loss by HF switch, worsens because be somebody's turn to do the C/N (carrier-to-noise ratio) of the received signal by loss.
In addition, this problem occurs in reception too from the satellite signal reception converter of the different electric wave in the polarization corrugated of a satellite transmission.
Promptly, owing in this satellite signal reception converter, also use HF switch (horizontal/vertical diverter switch) for switching polarized wave, so received signal produces by loss by this HF switch, for the deterioration of the C/N of received signal, should become the loss that to ignore by loss.
The present invention finishes in view of such problem, and its purpose is, a kind of HF switch of not using is provided, and also can carry out the polarization corrugated of received signal and the satellite signal reception converter of the switching that receives satellite.
For solving the means of problem
The 1st aspect of the present invention that forms for achieving the above object is, a kind of satellite signal reception converter, form by in the shell that is provided with the waveguide that constitutes once-used emitter integratedly, holding substrate, on described substrate, formed the converter circuit part of the detector that comprises receiving signals from satellites, it is characterized in that
The converter circuit that forms on described substrate partly comprises:
Horizontal polarized wave is with detector and vertically polarized wave detector, is configured in the correspondence position with the opening portion of described once-used emitter, and receives the two kinds of mutually orthogonal electric waves of corrugated that polarize respectively;
A pair of 1RF amplifying circuit is connected respectively to the supply terminals of described each detector, and the RF signal that receives by described each detector is amplified;
The RF amplification control circuit based on the control signal from the outside, switches the operate condition of described a pair of 1RF amplifying circuit, makes in described a pair of 1RF amplifying circuit, and during a 1RF amplifying circuit action, the non-action of another 1RF amplifying circuit;
The 1RF transmission line, be connected respectively to the outlet side of described a pair of 1RF amplifying circuit, to transfer to the 1st interlinkage via a pair of the 1st incoming line from the output of described each 1RF amplifying circuit, and export via the 1st outlet line from the 1st interlinkage with roughly the same line length;
Filter circuit, will from the signal of the 1st outlet line of described 1RF transmission line output, the RF signal-selectivity ground that amplified by described each 1RF amplifying circuit passes through;
Frequency-conversion circuit, the RF signal frequency converting that will pass through described filter circuit is the IF signal of midband; And
The IF amplifying circuit amplifies the IF signal that has carried out frequency translation by described frequency-conversion circuit,
Two signal paths from the supply terminals of described each detector to described each 1RF transmission line are formed path about equally,
And the line length that constitutes a pair of the 1st incoming line of described each 1RF transmission line is set to reactive component when described the 1st interlinkage is seen the 1RF amplifying circuit that is in non-action status becomes roughly zero.
In addition, the 2nd aspect of the present invention is in the satellite signal reception converter aspect the 1st, it is characterized in that, be used for being adjusted at the 1st interlinkage being provided with of described 1RF transmission line described each the 1st incoming line the RF signal transmission characteristic the 1st adjust member, make reactive component when described the 1st interlinkage is seen the 1RF amplifying circuit that is in non-action status become roughly zero.
In addition, the 3rd aspect of the present invention is in the satellite signal reception converter aspect the 2nd, to it is characterized in that, the described the 1st adjusts member is made of length-adjustable stub (stub).
On the other hand, the 4th aspect of the present invention is in each described satellite signal reception converter aspect the 1st to the 3rd, to it is characterized in that, in described shell, is respectively arranged with the waveguide that constitutes two once-used emitters,
On described substrate, as described converter circuit part,
To each reflector in described each once-used emitter, described horizontal polarized wave detector, described vertically polarized wave detector, described a pair of 1RF amplifying circuit and described 1RF transmission line are set,
And, be provided with:
A pair of 2RF amplifying circuit is connected respectively to the 1st outlet line corresponding to the 1RF transmission line of described each once-used emitter, and the RF signal from described each 1RF transmission line output is amplified; And
The 2RF transmission line, be connected respectively to the outlet side of described a pair of 2RF amplifying circuit, and will be from the output of described each 2RF amplifying circuit, via a pair of the 2nd incoming line with roughly the same line length, transfer to the 2nd interlinkage, and from the 2nd interlinkage, via the 2nd outlet line, output to described filter circuit
Described RF amplification control circuit constitutes, based on control signal from the outside, make one of totally 4 1RF amplifying circuits action that described two once-used emitters are provided with, the action of other 1RF amplifying circuit is stopped, and in described a pair of 2RF amplifying circuit, the 2RF amplifying circuit action that RF signal to the 1RF amplifying circuit output from action is amplified stops the action of other 2RF amplifying circuit
Four signal paths from the supply terminals of described each detector to described each 2RF transmission line form path about equally,
And the line length that constitutes a pair of incoming line of described 2RF transmission line is set to, and the reactive component when described the 2nd interlinkage is seen the 2RF amplifying circuit that is in non-action status becomes roughly zero.
In addition, the 5th aspect of the present invention is in the satellite signal reception converter aspect the 4th, it is characterized in that, be arranged in the printing cloth line model (pattern) on the described substrate for forming described converter circuit part, printing cloth line model till from the described a pair of detector that corresponds respectively to described two once-used emitters to described the 2nd interlinkage, the center line that forms with respect to the intermediate point by two once-used emitters becomes the substantial line symmetry.
In addition, the 6th aspect of the present invention is in the satellite signal reception converter aspect the 4th or the 5th, it is characterized in that, be used for being adjusted at the 2nd interlinkage being provided with of described 2RF transmission line described each the 2nd incoming line the RF signal transmission characteristic the 2nd adjust member, make reactive component when described the 2nd interlinkage is seen the 2RF amplifying circuit that is in non-action status become roughly zero.
In addition, the 7th aspect of the present invention is in the satellite signal reception converter aspect the 6th, to it is characterized in that, the described the 2nd adjusts member is made of length-adjustable stub.
The invention effect
In the satellite signal reception converter aspect the of the present invention the 1st, from use detector and the signal (RF signal) of vertically polarized wave by horizontal polarized wave with the detector reception, selection is during from the signal on the polarization corrugated of external command, use the RF amplification control circuit, rather than HF switch as in the past.
And, this RF amplification control circuit makes in to a pair of 1RF amplifying circuit that amplifies from the received signal (RF signal) of each detector, any circuit operation, other circuit are non-action status, thereby can make frequency-conversion circuit carry out the RF signal of frequency translation based on selecting from the control signal of outside.
Therefore, according to satellite signal reception converter of the present invention, need not in the switching on polarization corrugated, to use HF switch as in the past, so can realize the converter circuit part with low cost.
In addition, if as the present invention, in a pair of 1RF amplifying circuit, make a circuit operation, other circuit stop action, thereby select to output to the RF signal of filter circuit (and then frequency-conversion circuit), then can take into account the influence that the RF signal that outputs to the 1st outlet line by the 1st interlinkage is subjected to the transmission line (the 1st incoming line) of the 1RF amplifying circuit side that stops to move.
But, in the satellite signal reception converter aspect the of the present invention the 1st, be set to roughly the same from the supply terminals of each detector length by the transmission path of 1RF amplifying circuit and the 1st incoming line to the 1 interlinkage, and, transmit line length from the 1st incoming line of the RF signal of each detector respectively and be set to reactive component when the 1st interlinkage is seen the 1RF amplifying circuit that is in non-action status and become roughly zero.
Therefore, in a pair of 1RF amplifying circuit, make a circuit operation, when the action of other circuit was stopped, the frequency characteristic that outputs to the RF signal of filter circuit (and then frequency-conversion circuit) can not be subjected to the influence of the 1st incoming line of the 1RF amplifying circuit side that stops to move and be at random.
Therefore, according to satellite signal reception converter of the present invention, can stably select received signal (RF signal) from the polarization corrugated of external command, and can not worsen the frequency characteristic of this signal, and can pass through frequency-conversion circuit, with the IF signal of RF signal frequency converting for expecting of this selection.
Here, in the present invention, set the length of the 1st incoming line, make reactive component when the 1st interlinkage is seen the RF amplifying circuit that is in non-action status become roughly zero, but to be used for reactive component be zero length changes according to the deviation of the characteristic (especially, output impedance) of 1RF amplifying circuit etc.
Therefore, when producing satellite signal reception converter in a large number, expectation can be adjusted the length (its transmission characteristic specifically) of the 1st incoming line according to this deviation, for this reason, as the 2nd aspect of the present invention, be provided for being adjusted at the 1st the adjusting member and get final product of transmission characteristic of the RF signal in each the 1st incoming line at the 1st interlinkage of 1RF transmission line.
Promptly, like this, can adjust the transmission characteristic that member is adjusted at the RF signal in the 1st incoming line by the 1st, make reactive component when the 1st interlinkage is seen the RF amplifying circuit that is in non-action status become roughly zero, even in the characteristic of 1RF amplifying circuit etc., have deviation, also can select the RF signal well and carry out frequency translation.
In addition, as the 1st adjustment member,,, adjust its electric capacity between the 1st interlinkage and ground wire so the capacitor of adjustable capacitance for example also can be set as long as can adjust the transmission characteristic of the 1st incoming line that constitutes the 1RF transmission line.But, if as the 3rd aspect of the present invention, constitute the 1st by length-adjustable stub and adjust member, just its structure can be made as extremely simple.
Promptly, such shown in Figure 1A, 1B, stub can be made of the cloth line model that a pair of incoming line and interlinkage together are formed on the substrate, and, when adjusting the characteristic of incoming line, adjust the length of stub, make impedance when interlinkage is seen the RF amplifying circuit that is in non-action status for example be changed to the C point and get final product from the A point shown in Fig. 1 C.
Therefore, if adjust member and use stub as the 1st, not only can be simply, and can the utmost point adjust the characteristic of the 1st incoming line simply, can realize satellite signal reception converter at low cost its structure.
In addition, Fig. 1 C uses Smith chart (figure is an impedance diagram) expression by the impedance variation that stub produces is set on interlinkage, when the expression of A point on the Smith chart is not provided with stub like that shown in Figure 1A, the impedance when interlinkage is seen the RF amplifying circuit that is in non-action status.
In addition, in Fig. 1 C, the expression of C point is provided with stub like that shown in Figure 1B, and adjust its length, thereby the impedance when interlinkage is seen the RF amplifying circuit that is in non-action status is turned to the only optimum state of reactive component, the B zone of ordering and exceed the variation of the impedance that D region representation that C orders changes according to the length of stub from the A point to C.
And, if like this will the reactive component when interlinkage is seen the RF amplifying circuit that is in non-action status become roughly zero, then become and on interlinkage, connect resistance, even so the RF signal might be decayed under the little situation of its resistance value, the frequency characteristic of RF signal can be not chaotic yet, so the RF signal that is received by specific detector can be transferred to well the frequency-conversion circuit of back level.
In addition, be under the situation of non-action (action power disconnection etc.) at the RF amplifying circuit, the high value of the general expression of the I/O impedance of RF amplifying circuit (being equivalent to above-mentioned resistance value) so the decay of RF signal becomes very little, does not have problems in the practicality.
Then, in the satellite signal reception converter aspect the of the present invention the 4th, in shell, be respectively arranged with the waveguide that constitutes two once-used emitters, on substrate, to each reflector in each once-used emitter, be provided with horizontal polarized wave detector, vertically polarized wave detector, a pair of 1RF amplifying circuit and 1RF transmission line.
And, on the 1st outlet line corresponding to the 1RF transmission line of each once-used emitter, connected the 2RF amplifying circuit respectively, the RF amplification control circuit is based on the control signal from the outside, make one of totally 4 1RF amplifying circuits action that two once-used emitters are provided with, the action of other 1RF amplifying circuit is stopped, and in a pair of 2RF amplifying circuit, the 2RF amplifying circuit action that RF signal to the 1RF amplifying circuit output from action is amplified stops the action of other 2RF amplifying circuit.
In addition, at the outlet side of the 2RF amplifying circuit of change action state so optionally, connected the 2RF transmission line that constitutes with the 1RF transmission line roughly the samely, filter circuit (and then, frequency-conversion circuit) in, the input rf signal via this 2RF transmission line.
Therefore, according to satellite signal reception converter of the present invention, action by the RF amplification control circuit, one of received signal (RF signal) that is received by totally 4 detectors that two once-used emitters are provided with optionally is transferred to frequency-conversion circuit, can select from the RF signal on the expectation polarization corrugated of expectation satellite transmission, and need not as in the past, use polarized wave to switch two HF switch of usefulness and HF switch that satellite switches usefulness totally three HF switch
In addition, in the satellite signal reception converter aspect the of the present invention the 4th, four signal paths from the supply terminals of each detector to each 2RF transmission line form path about equally, and the line length that constitutes a pair of incoming line of 2RF transmission line is set at reactive component when the 2nd interlinkage is seen the 2RF amplifying circuit that is in non-action status becomes roughly zero.
Therefore, even the RF amplification control circuit stops the action of 3 1RF amplifying circuits and 1 2RF amplifying circuit for the RF signal of selecting the satellite/polarization corrugated from external command, the frequency characteristic that outputs to the RF signal of filter circuit (and then frequency-conversion circuit) can not be subjected to the influence of signal path of the RF amplifying circuit side that stops to move and confusion yet, can with from the RF signal stabilization on the satellite/polarization corrugated of external command transfer to frequency-conversion circuit.
In addition, in the satellite signal reception converter aspect the of the present invention the 4th, in order more stably to transfer to frequency-conversion circuit from the RF signal on the satellite/polarization corrugated of external command, as the 5th aspect of the present invention, be arranged in the printing cloth line model on the substrate for forming the converter circuit part, the center line that the printing cloth line model till a pair of detector to the 2 interlinkages that correspond respectively to two once-used emitters forms with respect to the intermediate point by two once-used emitters becomes the substantial line symmetry.
In addition, also can be as the 6th aspect of the present invention, with the 1st interlinkage of 1RF transmission line in the same manner, the 2nd interlinkage of 2RF transmission line be provided for being adjusted at the RF signal in each the 2nd incoming line transmission characteristic the 2nd adjust member, make reactive component when the 2nd interlinkage is seen the 2RF amplifying circuit that is in non-action status become roughly zero better.
And, also can as the 7th aspect of the present invention,, the 2nd adjustment member and the 1st constitute by length-adjustable stub in the same manner if adjusting member, then can simplify the structure of the 2nd adjustment member, carry out its length adjustment extremely simply.
Description of drawings
Figure 1A-Fig. 1 C is the key diagram of the action when being used to illustrate the transmission characteristic of using stub to adjust incoming line.
Fig. 2 A-Fig. 2 B is the summary construction diagram of structure of the satellite signal reception converter of expression the 1st execution mode.
Fig. 3 is the circuit structure diagram of the converter circuit circuit structure partly of expression the 1st execution mode.
Fig. 4 is the key diagram of structure of the printed board of the expression converter circuit part that formed the 1st execution mode.
Fig. 5 A-Fig. 5 B is around the 1RF transmission line that explains in Fig. 4 and the key diagram around the 2RF transmission line.
Fig. 6 is the circuit structure diagram of the converter circuit circuit structure partly of expression the 2nd execution mode.
Fig. 7 is a circuit structure diagram of representing the converter circuit circuit structure partly of satellite signal reception converter in the past.=
Label declaration
1... converter circuit part, 2... detector, 2a... horizontal polarized wave detector, 2b... vertically polarized wave detector, 3a, 3b... the 1RF amplifying circuit, 6a, 6b... the 2RF amplifying circuit, the 7... frequency changer, 8... local oscillator, 9...IF amplifying circuit, 10... terminal, 11...RF amplification control circuit, 12a, 12b... detector supply terminals, 13a, 13b... capacitor, 14... 1RF transmission line, 15... the 1st incoming line, 16... the 1st interlinkage, 17... the 1st outlet line, 18... stub, the small model of 18a... (pattern), 19... filter circuit, 19a... ... input terminal, 20... ... converter circuit part, 21,22,23... printed board, 24... 2RF transmission line, 25... the 2nd incoming line, 26... the 2nd interlinkage, 27... the 2nd outlet line, 28... stub, 28a-1,28a-2... mark, 29... capacitor, 34...RF transmission line, 35... the 1st incoming line, 36... the 1st interlinkage, 37... the 1st outlet line, 38... stub, 40... shell main body, 40a... the bottom surface, 41... once-used emitter, 42... circular waveguide, 43... once-used emitter opening portion, 44... choke (choke), 45... terminal part, 46... space, 47... shielding (shield) member, the 48...IF lead-out terminal.
Embodiment
Below, with accompanying drawing embodiments of the present invention are described together.
[the 1st execution mode]
Fig. 2 A-Fig. 2 B represents to use the structure of the satellite signal reception converter of the 1st execution mode of the present invention, and Fig. 2 A is the rearview of outward appearance of the shell main body of this satellite signal reception converter of expression, and Fig. 2 B is the line sectional view of the 2B-2B` among Fig. 2 A.
In addition, in the following description, under the situation of expression direction, short ofly express especially, then the right among Fig. 2 B (being provided with the direction of once-used emitter 41) be made as the place ahead, with left to being made as the rear.
In Fig. 2 A, Fig. 2 B, the 40th, constitute the shell main body of the satellite signal reception converter of present embodiment, and be the main body of the electric conducting material of cast aluminium etc. being carried out metal forming.At the front side of this shell main body 40, once-used emitter 41 forms with shell main body 40.
Because once-used emitter 41 can be tackled the reception from the electric wave of two satellites, so be made of two circular waveguides 42,42, in the shell main body, has formed this two circular waveguides 42,42, be set up in parallel to keep proper spacing.Therefore, in shell main body 40, formed the opening portion 43,43 of two once-used emitters 41 in the coupling part of these two circular waveguides 42,42.
In addition, by in the place ahead of circular waveguide 42,42 to the end periphery, keep proper spacing and a plurality of chokes 44 (being 3 chokes in an embodiment of the present invention) be set, thereby can obtain good frequency characteristic.
In addition, by rear side wall is set in shell main body 40, outstanding rearward with four limits from the bottom surface 40a of shell main body 40, formed the space 46 that has opening overleaf, this space 46 and circular waveguide 42,42 are communicated with via the once-used emitter opening portion 43,43 that forms on the 40a of the bottom surface of shell main body 40.
In the present embodiment, in this space 46, hold the printed board 21 that has formed converter circuit part 1.And, shield member 47 has been installed on printed board 21, be used to use known screw etc. and printed board 21 is fixed on bottom surface 40a.
This shield member 47 is made of the electric conducting material of cast aluminium etc., and integrally formed shielding wall to shielding between the terminal part 45 of once-used emitter 41, RF amplifying circuit described later, the local oscillator etc.
In addition, in Fig. 2 A, Fig. 2 B 48 be in shell main body 40 inside, to be connected to the terminal 10 of converter circuit part 1 and to be used for received signal is fetched into outside IF lead-out terminal.This IF lead-out terminal 48 can form with shell main body 40, also can constitute respectively.
Then, Fig. 3 is the circuit structure diagram that is illustrated in the circuit structure of the converter circuit part 1 that forms on the printed board 21.In addition, can be installed as,, be clamped in the bottom 30a in space 46 by known fixed part (screw etc.) and shield member 47 at the printed board 21 that has formed this converter circuit part 1.
As shown in Figure 3, on printed board 21, the position corresponding with the opening portion 43,43 of above-mentioned two once-used emitters formed detector 2 by printing cloth line model (pattern).This detector 2 is one group with detector 2a and vertically polarized wave with detector 2b with horizontal polarized wave and constitutes, and is provided with the detector 2 of each group at the opening portion 43,43 of each once-used emitter.
In addition, in the present embodiment, formed detector 2, but detector 2 also can be by metallic object etc., and print the cloth line model and form differently by printing the cloth line model.
Then, use the outlet side of detector 2b with detector 2a and vertically polarized wave at horizontal polarized wave, connected respectively and be used for 1RF amplifying circuit 3a, the 3a that the signal to the horizontal polarized wave that takes out by detector 2a amplifies and be used for 1RF amplifying circuit 3b, the 3b (that is the 1RF amplifying circuit of whole in the present embodiment 4 systems) that the signal to the vertically polarized wave that takes out by detector 2b amplifies.
The 1RF amplifying circuit 3a, 3b, 3a, the 3b that constitute by these 4 systems, for example by HEMT (High Electron Mobility Transistor: High Electron Mobility Transistor) or the high frequency amplifier element of FET etc. constitute and output after will suitably amplifying by the signal that detector 2 takes out.In addition, in the present embodiment, use HEMT to constitute each 1RF amplifying circuit 3a, 3b, 3a, 3b respectively, and can be such as shown in the figure, constitute by 1 transistor, also the multistage connection of a plurality of HEMT can be constituted.
In addition, these 4 1RF amplifying circuit 3a, 3b, 3a, 3b be the change action state optionally, make when 1RF amplifying circuit 3 actions of any system, the 1RF amplifying circuit 3 of remaining 3 systems becomes non-action, with the signal that can tackle in the signal from two satellites, expectation receives.
And this handover operation is for example based on the control signal from the terminal installation of the outside that is connected to not shown satellite tuner etc., by being undertaken by the RF amplification control circuit shown in 11 among Fig. 3.
Then, outlet side at these 1RF amplifying circuits 3a, 3b, 3a, 3b, to each 1RF amplifying circuit 3a, 3b corresponding to 1RF amplifying circuit 3a, the 3b of 2 systems of each once-used emitter opening portion 43,43, connected 1RF transmission line 14 (two 1RF transmission lines in the present embodiment).
This 1RF transmission line 14 is to form by printing the cloth line model, and constitute by the 1st incoming line 15,15, the 1st interlinkage 16 of output end that has connected the 1st incoming line 15,15 and the 1st outlet line 17 that is connected to the 1st interlinkage 16 at least, wherein, the 1st incoming line 15,15 is connected to the outlet side of 1RF amplifying circuit 3a, 3b, and forms amplifying signal in 1RF amplifying circuit 3a, 3b is transmitted and has an identical line length.
That is, this 1RF transmission line 14,14 constitutes, and the horizontal polarized wave that optionally amplifies in any that respectively will be in 1RF amplifying circuit 3a, the 3b of correspondence or the received signal (RF signal) of vertically polarized wave output to the 1st outlet line 17.And, in the 1RF transmission line 14,14 of these 2 systems, be provided with the stub 18 of the 1st interlinkage 16 that is connected to the 1st incoming line 15 respectively.
That is, in the present embodiment, in being connected to two 1RF amplifying circuit 3a, 3b of the 1st interlinkage 16, when any stops to move, another amplifying circuit must become the action halted state.
Therefore, in the present embodiment, set the length of each the 1st incoming line 15, make the reactive component of the impedance when the 1st interlinkage 16 is seen the RF amplifying circuit that is in non-action status become roughly zero, thereby can not bring influence to the frequency characteristic of the RF signal after amplifying, and then, stub 18 is set, thereby can be adjusted at the transmission characteristic of the RF signal in each the 1st incoming line 15 in order to compensate the deviation of the characteristic that can not adjust by its length setting.
Then, at the outlet side of 1RF transmission line 14,14, the 2RF amplifying circuit 6,6 via the back level has connected 2RF transmission line 24.
Promptly, in the present embodiment, RF amplification control circuit 11 moves one of 4 1RF amplifying circuits 3 and one of 2 2RF amplifying circuits 6, make other RF amplifying circuit all be made as the action halted state, thereby select to output to 2RF and to transmit road 24 from the received signal (RF signal) on the satellite/polarization corrugated of the external device (ED) instruction of satellite tuner etc. afterwards.
In addition, this 2RF amplifying circuit 6,6 also can be made as multilevel hierarchy in the same manner with 1RF amplifying circuit 3a, the 3b of prime, or also can not have.
Then, 2RF transmission line 24 is to form by printing the cloth line model, and constitute by the 2nd incoming line 25,25, the 2nd interlinkage 26 of output end that has connected the 2nd incoming line 25,25 and the 2nd outlet line 27 that is connected to the 2nd interlinkage 26 at least, wherein, the 2nd incoming line 25,25 is connected to the outlet side of 1RF transmission line 14,14, and forms transmitting from the received signal of 1RF transmission line 14,14 output and having an identical line length.
That is, this 2RF transmission line 24 constitutes, will from two satellites, the received signal of the satellite that receives of expectation outputs to the 2nd outlet line 27.And, in 2RF transmission line 24, be provided with the stub 28 of the 1st interlinkage 26 that is connected to the 2nd incoming line 25 respectively.
With above-mentioned stub 18 in the same manner, stub 28 is the transmission characteristics that are used to adjust the RF signal, make in two 2RF amplifying circuits 6,6 that are connected to the 2nd interlinkage 26 via a pair of the 2nd incoming line 25,25, when any stops to move, can not bring the line of influence frequency characteristic from the received signal (RF signal) of another amplifying circuit output.
That is, in the present embodiment, in being connected to two 2RF amplifying circuits 6,6 of the 2nd interlinkage 26, when any stops to move, another amplifying circuit must become the action halted state.
Therefore, in the present embodiment, set the length of each the 2nd incoming line 25, make the reactive component of the impedance when the 2nd interlinkage 26 is seen the RF amplifying circuit that is in non-action status become roughly zero, thereby can not bring influence to the frequency characteristic of the RF signal after amplifying, and then, stub 28 is set, thereby can be adjusted at the transmission characteristic of the RF signal in each the 2nd incoming line 25 in order to compensate the deviation of the characteristic that can not adjust by its length setting.
Then, at the outlet side of 2RF transmission line 24, connected filter circuit 19.This filter circuit 19 is circuit that the received signal of having passed through 2RF transmission line 24 is optionally passed through, and in the present embodiment, by printing the cloth line model, constitutes as band pass filter.
And, having connected frequency changer 7 at the outlet side of this filter circuit 19, the desired signal that has passed through filter circuit 19 is input to this frequency changer 7.In addition, on frequency changer 7, connected local oscillator 8, be input to frequency conversion unit 7 by the local oscillations that in local oscillator 8, generates, thereby from frequency conversion unit 7 output intermediate frequency signal (IF signal), this intermediate frequency signal (IF signal) has from the desired signal of filter circuit 19 outputs and the frequency of the difference of exporting from the local oscillations of local oscillator 8.In addition, constitute frequency-conversion circuit of the present invention by frequency changer 7 and local oscillator 8.
In addition, at the outlet side of frequency changer 7, connected IF amplifying circuit 9.This IF amplifying circuit 9 for example is made of the high-frequency component of transistor or IC etc., output after the IF signal that generates in frequency changer 7 is amplified.And the outlet side of this IF amplifying circuit 9 is connected to terminal 10, and the IF signal outputs to the outside via this terminal 10.
Then, Fig. 4 is the structure chart of concrete structure that expression has formed the printed board 21 of converter circuit part 1, Fig. 5 A is that Fig. 5 B is the further explanatory drawings of the 2RF transmission line 24 in Fig. 4 from the further explanatory drawings of supply terminals 12a to the 1RF transmission line 14 of the detector among Fig. 42.
As shown in Figure 4, the horizontal polarized wave that is provided with respectively in 2 once-used emitter opening portions 43 is connected via the transmission line (printing the cloth line model) that extends from the supply terminals 12a of each detector 2a, 2b and 12b with detector 2b and RF amplifying circuit 3a, 3b with detector 2a and vertically polarized wave, passes through RF amplifying circuit 3a, 3b amplification from the received signal that detector power pack 12a, 12b take out.
Outlet side at RF amplifying circuit 3a, 3b, connected by received signal and cut off capacitor 13a, the 13b (with reference to Fig. 5 A) of DC power supply, each RF amplifying circuit 3a, 3b are connected to the 1st incoming line 15 of 1RF transmission line 14 via this capacitor 13a, 13b.In addition, this capacitor 13a, 13b can be made of the capacitor of the sheet type shown in Fig. 5 A (chip type), but get final product because of can and cutting off DC power supply by received signal, so can also form by printing the cloth line model.
And, in the present embodiment, from detector supply terminals 12a via RF amplifying circuit 3a to the signal path of the output of capacitor 13a with form path about equally via RF amplifying circuit 3b to the signal path of the output of capacitor 13b from detector supply terminals 12b.In addition, as, a pair of the 1st incoming line 15,15 that constitutes 1RF transmission line 14 also forms line length about equally.
Therefore, from the path of the 1st interlinkage 16 of detector supply terminals 12a to the 1RF transmission line 14 with from the path of the 1st interlinkage 16 of detector supply terminals 12b to the 1RF transmission line 14 about equally.
In addition, from the path of detector supply terminals 12a to the 1RF transmission line 14, be provided with respectively from the path of detector supply terminals 12b to the 1RF transmission line 14 and the opening portion 43,43 of 14 pairs of 2 once-used emitters of 1RF transmission line, these various pieces form, center line (center line of the central point of the left and right directions of connection printed board 21 in the present embodiment) CL with respect to the intermediate point that passes through opening portion 43,43 becomes the line symmetry.
In addition, in 2RF transmission line 24, configuration forms the printing cloth line model of the 2nd outlet line 27, is located on the above-mentioned centre line C L, forms the printing cloth line model that it forms the 2nd incoming line 25,25, makes it become the line symmetry across centre line C L.
Therefore, in the present embodiment, 4 signal paths of the 2nd interlinkage 26 from each detector supply terminals 12 to 2RF transmission line 24, which signal path, its path-length are all about equally.
In addition, shown in Fig. 5 A, like that, be connected to the substantial middle of stub 18 between a pair of the 1st incoming line 15,15 of the 1st interlinkage 16 of 1RF transmission line 14, and form to opposite to outstanding with the 1st outlet line 17.And, near the front end of stub 18, formed the small model 18a that prints wiring across small space.
This small model is the model that is used to adjust the length of stub 18, connects the leading section and the small model 18a of stub 18 by known methods such as solderings, can carry out the length adjustment of stub 18 simply.
In addition, such shown in Fig. 5 B, be connected to the stub 28 of the 2nd interlinkage 26 of 2RF transmission line 24 by formation, make its an outstanding circuit (the 2nd incoming line on right side among the figure) and substantial middle between the 2nd outlet line 27 (direction under about among the figure) that is arranged on a pair of the 2nd incoming line 25,25, thereby between the input terminal 19a of the 2nd outlet line 27 and filter circuit 19, extend, on wide cut, be arranged to one with the 2nd outlet line 27.
And, near the outside of the base portion of stub 28 and leading section, mark 28a-1, the 28a-2 of the sign when becoming on printed board 21 width of adjusting stub 28 or length have been formed by (resist) against corrosion printing, with this mark 28-1,28-2 as benchmark, on the printing cloth line model of stub 28, connect electric conducting material, thereby can carry out the length adjustment of stub 28 simply.
As described above such, in the satellite signal reception converter of present embodiment, in converter circuit part 1, form roughly the same length from the signal path of detector supply terminals 12a and detector supply terminals 12b to the 1RF transmission line 14, and, these signal paths form respectively each once-used emitter of correspondence, become the substantial line symmetry with respect to the centre line C L of the intermediate point by once-used emitter opening portion 43,43.In addition, 2RF transmission line 24 is configured to the 2nd outlet line 27 and is positioned on the centre line C L, and the printing cloth line model that forms the 2nd incoming line 25,25 becomes the substantial line symmetry across centre line C L.Therefore, 4 signal paths of the 2nd interlinkage 26 from 4 detector supply terminals 12 to 2RF transmission line 24, which signal path, its path-length are all about equally.
In addition, in 1RF transmission line 14 and 2RF transmission line 24, on interconnecting members 16 and 26, be provided with length- adjustable stub 18,28 respectively, can adjust the transmission characteristic of incoming line 15,25 via these each stubs 18,28, make and see that from interlinkage 16,26 reactive component of 3,6 o'clock the impedance of RF amplifying circuit that is in the action halted state becomes roughly zero.
Therefore, satellite signal reception converter according to present embodiment, select to make the RF amplifying circuit 3,6 of its action via RF amplification control circuit 11, thereby can carry out the switching on the satellite that will receive and polarization corrugated, and can prevent that the influence of transmission line that can not stopped RF amplifying circuit 3,6 sides of action by this frequency characteristic of switching selected received signal (RF signal) from changing.
Therefore,, need not to use as in the past HF switch, can carry out the switching on satellite and polarization corrugated, can realize converter circuit part 1 with low cost according to the satellite signal reception converter of present embodiment.
[the 2nd execution mode]
Then, the 2nd execution mode of the present invention is described.
Fig. 6 is the converter circuit circuit structure diagram partly that constitutes the satellite signal reception converter of the 2nd execution mode.In addition, in the following description, give identical label, omit detailed explanation for the structural element identical with the satellite signal reception converter of the 1st execution mode.
In the 1st execution mode, the satellite signal reception converter that has comprised converter circuit part 1 has been described, wherein, converter circuit part 1 constitutes can be 4 signals that send with horizontal polarized wave and vertically polarized wave from two satellites, carry out the selection of polarized wave and the selection of satellite, but in the present embodiment, the satellite signal reception converter that comprises converter circuit part 20 is shown, wherein, converter circuit part 20 constitutes can be 2 signals that send with horizontal polarized wave and vertically polarized wave from a satellite, the signal on the corrugated of expecting to polarize.
As shown in Figure 6, in the converter circuit part 20 of present embodiment, in printed board 22, comprise: one group of detector 2, the horizontal polarized wave that is disposed accordingly by the opening portion 43 with an once-used emitter that is arranged on not shown shell main body constitutes with detector 2a and perpendicular polarization wave detector 2b; 1RF amplifying circuit 3a, the 3b of 2 systems amplify the received signal of taking out from each detector 2a, 2b; And 1RF transmission line 34, be arranged on the outlet side of these each 1RF amplifying circuit 3a, 3b, make 2 any actions among 1RF amplifying circuit 3a, the 3b by RF amplification control circuit 11 according to control signal from external device (ED), another action is stopped, thereby selection outputs to the filter circuit 19 of back level from 1RF transmission line 34 after the RF signal on the polarization corrugated of external command.
In addition, with the 1st execution mode in the same manner, 1RF transmission line 34 comprises: a pair of the 1st incoming line 35,35 with roughly the same line length; The 1st interlinkage 36 that connects the output of each the 1st incoming line 35,35; And the 3rd outlet line 37 that is connected to the 1st interlinkage 36, from the path of two signal paths of each detector 2a, 2b to the 1 interlinkage 36 which signal path all about equally.
In addition, with the 1st execution mode in the same manner, the 1st interlinkage 36 is provided with length-adjustable stub 38, by this stub 38, can set the transmission characteristic of the 1st incoming line 35,35, make the reactive component of the impedance when the 1st interlinkage 36 is seen the 1RF amplifying circuit 3 that is in the action halted state become roughly zero.
Therefore, according to the satellite signal reception converter of present embodiment, need not to use as in the past HF switch, optional selecting a time hoped the received signal (RF signal) on polarization corrugated and frequency translation is the IF signal, can simplify the structure of converter circuit part 20, thereby can realize at an easy rate.
More than, 2 execution modes of the present invention have been described, but the present invention is not limited to above-mentioned execution mode, can get variety of way in the scope that does not break away from intention of the present invention.
For example, in the above-described embodiment, as on the 2nd interlinkage 26 of the 1st interlinkage 16 (36) of 1RF transmission line 14 (34) or 2RF transmission line 24, the structure of stub 18 (38), 28 that is provided for proofreading and correct the transmission characteristic of the 1st incoming line 15 (35) or the 2nd incoming line 25 is illustrated.
But at length setting by the 1st incoming line 15 (35) or the 2nd incoming line 25, the reactive component of seeing the impedance of the RF amplifying circuit 3 that is in non-action status or from the 1st interlinkage 16 (36) or the 2nd interlinkage 26 at 6 o'clock can be roughly under zero the situation, can leave out stub 18 (38), 28.
In addition, these stubs 18 (38), 28 need not to form by printing the cloth line model like that shown in Fig. 5 A, Fig. 5 B, also can form by connect electric conductor on interlinkage 16 (36) or 26.In addition, the shape of these stubs 18 (38), 28 is also as long as suitably set, and then stub 18 (38), 28 can replace the such open stub of above-mentioned execution mode, and is made of closed stub (short stub).
Claims (7)
1. a satellite signal reception converter forms by hold substrate in the shell that is provided with the waveguide that constitutes once-used emitter integratedly, has formed the converter circuit part of the detector that comprises receiving signals from satellites on described substrate, it is characterized in that,
The converter circuit that forms on described substrate partly comprises:
Horizontal polarized wave is with detector and vertically polarized wave detector, is configured in the correspondence position with the opening portion of described once-used emitter, and receives the two kinds of mutually orthogonal electric waves of corrugated that polarize respectively;
A pair of 1RF amplifying circuit is connected respectively to the supply terminals of described each detector, and the RF signal that receives by described each detector is amplified;
The RF amplification control circuit based on the control signal from the outside, switches the operate condition of described a pair of 1RF amplifying circuit, makes in described a pair of 1RF amplifying circuit, and during a 1RF amplifying circuit action, the non-action of another 1RF amplifying circuit;
The 1RF transmission line, be connected respectively to the outlet side of described a pair of 1RF amplifying circuit, to transfer to the 1st interlinkage via a pair of the 1st incoming line from the output of described each 1RF amplifying circuit, and export via the 1st outlet line from the 1st interlinkage with roughly the same line length;
Filter circuit, will from the signal of the 1st outlet line of described 1RF transmission line output, the RF signal-selectivity ground that amplified by described each 1RF amplifying circuit passes through;
Frequency-conversion circuit, making the RF signal frequency converting that has passed through described filter circuit is the IF signal of midband; And
The IF amplifying circuit amplifies the IF signal that has carried out frequency translation by described frequency-conversion circuit,
Two signal paths from the supply terminals of described each detector to described each 1RF transmission line are formed path about equally,
And the line length that constitutes a pair of the 1st incoming line of described each 1RF transmission line is set to reactive component when described the 1st interlinkage is seen the 1RF amplifying circuit that is in non-action status becomes roughly zero.
2. satellite signal reception converter as claimed in claim 1 is characterized in that,
Be used for being adjusted at the 1st interlinkage being provided with of described 1RF transmission line described each the 1st incoming line the RF signal transmission characteristic the 1st adjust member, make reactive component when described the 1st interlinkage is seen the 1RF amplifying circuit that is in non-action status become roughly zero.
3. satellite signal reception converter as claimed in claim 2 is characterized in that,
The described the 1st adjusts member is made of length-adjustable stub.
4. as each described satellite signal reception converter of claim 1 to 3, it is characterized in that,
In described shell, be respectively arranged with the waveguide that constitutes two once-used emitters,
On described substrate, as described converter circuit part,
To each reflector in described each once-used emitter, described horizontal polarized wave detector, described vertically polarized wave detector, described a pair of 1RF amplifying circuit and described 1RF transmission line are set,
And, be provided with:
A pair of 2RF amplifying circuit is connected respectively to the 1st outlet line corresponding to the 1RF transmission line of described each once-used emitter, and the RF signal from described each 1RF transmission line output is amplified; And
The 2RF transmission line, be connected respectively to the outlet side of described a pair of 2RF amplifying circuit, and will be from the output of described each 2RF amplifying circuit, via a pair of the 2nd incoming line with roughly the same line length, transfer to the 2nd interlinkage, and from the 2nd interlinkage, via the 2nd outlet line, output to described filter circuit
Described RF amplification control circuit constitutes, based on control signal from the outside, make one of totally 4 1RF amplifying circuits action that described two once-used emitters are provided with, the action of other 1RF amplifying circuit is stopped, and in described a pair of 2RF amplifying circuit, the 2RF amplifying circuit action that RF signal to the 1RF amplifying circuit output from action is amplified stops the action of other 2RF amplifying circuit
Four signal paths from the supply terminals of described each detector to described each 2RF transmission line form path about equally,
And the line length that constitutes a pair of incoming line of described 2RF transmission line is set to, and the reactive component when described the 2nd interlinkage is seen the 2RF amplifying circuit that is in non-action status becomes roughly zero.
5. satellite signal reception converter as claimed in claim 4 is characterized in that,
Be arranged in the printing cloth line model on the described substrate for forming described converter circuit part, printing cloth line model till from the described a pair of detector that corresponds respectively to described two once-used emitters to described the 2nd interlinkage, the center line that forms with respect to the intermediate point by two once-used emitters becomes the substantial line symmetry.
6. as claim 4 or 5 described satellite signal reception converters, it is characterized in that,
Be used for being adjusted at the 2nd interlinkage being provided with of described 2RF transmission line described each the 2nd incoming line the RF signal transmission characteristic the 2nd adjust member, make reactive component when described the 2nd interlinkage is seen the 2RF amplifying circuit that is in non-action status become roughly zero.
7. satellite signal reception converter as claimed in claim 6 is characterized in that,
The described the 2nd adjusts member is made of length-adjustable stub.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007245510 | 2007-09-21 | ||
| JP245510/07 | 2007-09-21 | ||
| PCT/JP2008/067010 WO2009038189A1 (en) | 2007-09-21 | 2008-09-19 | Satellite signal reception converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101803211A true CN101803211A (en) | 2010-08-11 |
| CN101803211B CN101803211B (en) | 2013-03-13 |
Family
ID=40467998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880108268.XA Expired - Fee Related CN101803211B (en) | 2007-09-21 | 2008-09-19 | Satellite signal reception converter |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5198995B2 (en) |
| CN (1) | CN101803211B (en) |
| WO (1) | WO2009038189A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104369877A (en) * | 2014-09-03 | 2015-02-25 | 北京空间飞行器总体设计部 | Method for designing pointing of antenna of deep space probe |
| CN113287225A (en) * | 2019-01-16 | 2021-08-20 | 日立安斯泰莫株式会社 | Signal transmission device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05206711A (en) * | 1992-01-27 | 1993-08-13 | Mitsubishi Electric Corp | High frequency power distributor |
| JPH09294031A (en) * | 1996-04-24 | 1997-11-11 | New Japan Radio Co Ltd | High frequency change-over circuit |
| JP3403907B2 (en) * | 1996-12-09 | 2003-05-06 | 株式会社日立国際電気 | Converter for satellite reception |
| JP2867987B2 (en) * | 1997-01-16 | 1999-03-10 | 日本電気株式会社 | High frequency power combiner |
| JP2000295128A (en) * | 1999-02-03 | 2000-10-20 | Sharp Corp | Satellite receiver |
| JP4419288B2 (en) * | 2000-07-26 | 2010-02-24 | 株式会社デンソー | Radar equipment |
| CN1739252A (en) * | 2002-12-11 | 2006-02-22 | R·F·麦吉克公司 | Signal distribution system cascadable AGC device and method |
-
2008
- 2008-09-19 WO PCT/JP2008/067010 patent/WO2009038189A1/en active Application Filing
- 2008-09-19 JP JP2008240895A patent/JP5198995B2/en not_active Expired - Fee Related
- 2008-09-19 CN CN200880108268.XA patent/CN101803211B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104369877A (en) * | 2014-09-03 | 2015-02-25 | 北京空间飞行器总体设计部 | Method for designing pointing of antenna of deep space probe |
| CN113287225A (en) * | 2019-01-16 | 2021-08-20 | 日立安斯泰莫株式会社 | Signal transmission device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5198995B2 (en) | 2013-05-15 |
| CN101803211B (en) | 2013-03-13 |
| JP2009095014A (en) | 2009-04-30 |
| WO2009038189A1 (en) | 2009-03-26 |
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