CN201839389U - Power source circuit of satellite signal receiver - Google Patents
Power source circuit of satellite signal receiver Download PDFInfo
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- CN201839389U CN201839389U CN2010205627261U CN201020562726U CN201839389U CN 201839389 U CN201839389 U CN 201839389U CN 2010205627261 U CN2010205627261 U CN 2010205627261U CN 201020562726 U CN201020562726 U CN 201020562726U CN 201839389 U CN201839389 U CN 201839389U
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Abstract
A power source circuit of a satellite signal receiver can effectively prevent interference of tone control signals of the input power source of a television set top box through a plurality of cut-off circuits, senses the input power source through a plurality of switch components, and controls the conducting and the operation of an amplifier of an intermediate-frequency circuit of the satellite signal receiver.
Description
Technical field
The utility model is relevant with the satellite signals receiver, is meant a kind of power circuit of satellite signals receiver especially.
Background technology
See also a satellite signals receiver 1 as shown in Figure 1, as the satellite electromagnetic wave signal SAv that receives vertical and horizontal polarization directions, behind the SAh, with several low noise amplifiers 111,112 with signal processing and amplifying one by one, each satellite electromagnetic wave signal SAv or SAh then import a frequency down circuit 13, through difference be filtered into two radio-frequency (RF) signal RFv1, RFv2 or RFh1, RFh2, wherein vertically reach a pair of radio-frequency (RF) signal RFv1 of horizontal polarization, RFh1 or RFv2, RFh2 cooperates a local oscillator (the local oscillator with same tone controlling signal (ie.0k or 22k), LO) LO1 or LO2, with different voltage control signal (ie.13V or 18V) respectively through a mixer 131,134 or 132,133 with down conversion process, so forms the intermediate frequency signal IFv1 after the frequency reducing, IFv2, IFh1, IFh2 imports an intermediate-frequency circuit 15; So intermediate frequency signal IFv1, IFv2, IFh1, IFh2 is also respectively through intermediate frequency amplifier 151,152,153,154 so that after the Filtering Processing, can utilize the multiple matrix switch 17 of multiple-input and multiple-output to make arbitrary intermediate frequency signal IFv1, IFv2, IFh1, IFh2 all can be again through an amplifier 155,156,157,158 handle the back from same link OUT1, OUT2, OUT3, OUT4 output, a plurality of satellite signals like this receive the user can be connected to each link OUT1, OUT2, OUT3, OUT4 is with the arbitrary intermediate frequency signal IFv1 of selective reception, IFv2, IFh1, the satellite TV channel of IFh2 correspondence.
Therefore, the box (not shown) is in case after opening on arbitrary satellite signals reception user's the television set, then drop into power supply and give satellite signals receiver 1, receive the dc operation of the processing of circuit assembly of television channel correspondence for all circuit units or institute's desire from link OUT1, OUT2, OUT3, OUT4; A general direct current method of supplying satellite signals receiver 2 as shown in Figure 2, establish a pressurizer 19 as connecing respectively in each link OUT1, OUT2, OUT3, OUT4 after above-mentioned frequency down circuit 13 and the intermediate-frequency circuit 15, box provides the conducting running that the voltage control signal as above-mentioned driving local oscillator LO1, LO2 makes on the television set that is connected by correspondence, the pressurizer 19 of all conducting runnings can produce a dc operation power Vcc of same potential output, thereby the running of prime frequency down circuit 13 and back level intermediate-frequency circuit 15 is provided.Yet, because the tone control signal of carrying secretly in the middle of the voltage control signal of box input on the television set is kilo hertz frequency of time progression, intermediate frequency signal IFv1, IFv2, IFh1, IFh2 compared to more than one hundred million conspicuous time progression that satellite TV channel transmitted are the low-frequency transmission condition, although satellite signals receiver 2 has rigorous high-frequency circuit design specification, design especially but generally there is no, will drive the removal of the tone control signal of local oscillator LO1, LO2 especially as described above at the interference in the electric power loop; Therefore as long as wherein one receive that box is connected conducting with satellite signals receiver 2 on user's the television set, be 22k tone control signal in case carry secretly in the box power supply on the television set that just connects thereafter, then can make the local oscillator LO1 of frequency down circuit 13 or LO2 transmit the reception user of this low-frequency disturbance in moment to conducting.
Moreover, owing to need only a wherein link OUT1, OUT2, OUT3, box conducting on OUT4 and the television set, satellite signals receiver 2 all circuit units all obtain direct current operative power source Vcc, so not only there is unnecessary power supply to expend, and the link OUT1 of conducting just thereafter, OUT2, OUT3, the high frequency output impedance that OUT4 then makes the corresponding intermediate-frequency circuit of back level 15 produce instantaneous variation, cause the high frequency reflection characteristic of intermediate-frequency circuit 15 of corresponding conducting change, and then influence the high frequency characteristics of prime frequency down circuit 13, more make the reception user of conducting have unnecessary surging signal to disturb.Even if " power saver " that is provided for M288470 number just like the TaiWan, China patent, it is directly to import the single power supply supply that each link connects the input power supply of establishing box on the television set, each link is respectively equipped with a pressurizer to trigger the conducting of two-stage switch module, makes the conducting of the last level of control power supply unit and intermediate frequency signal amplifier; In addition disclose " Satelliet broadcast receiving converter of tool low power consumption " that is provided for 2003-204278 number just like Japan Patent, is the interlock circuit assembly of the specific controlling signal receiving channels that conducting is desired carried secretly with the input power supply; Thereby aforementioned two patents all have the signal interference of avoiding link moment conducting that high frequency output impedance is changed and causing, yet for the 22k tone control signal of being carried secretly by the input power supply of box on the television set, this two patent still can't avoid directly arriving by power supply unit the low-frequency disturbance that frequency down circuit caused.Moreover with the circuit structure of M288470 patent, the input power supply that pressurizer receives is still carried this tone control signal secretly, and what influence the stability of switch module output potential, so that influence the power output of the intermediate frequency amplifier of its control conducting.
In view of this, everybody is the circuit studies improvement of being devoted to be correlated with for the utility model application, has low power consumption and glitch-free high-quality satellite output signal to provide satellite signals to receive the user.
The utility model content
The purpose of this utility model is to provide a kind of power circuit of satellite signals receiver, and it has low power consumption and glitch-free high-quality satellite output signal.
For achieving the above object, the power circuit of the satellite signals receiver that the utility model provides, aforementioned satellite signals receiver has an intermediate-frequency circuit in order to handle the satellite signals after frequency reducing, intermediate frequency signal is exported from a plurality of intermediate frequency signal outputs, receive box reception on the television set that users institute is provided with respectively for a plurality of satellite signals, the aforementioned power source circuit is characterised in that:
A plurality of cut-off circuits, electrically connect a direct current transducer, respectively this cut-off circuit connects respectively and establishes above-mentioned each intermediate frequency signal output, box provides an input power supply in this intermediate frequency signal output on above-mentioned each television set, respectively this cut-off circuit input power turn-on that the intermediate frequency signal output of correspondence is received is to this direct current transducer, and the AC signal that the intermediate frequency signal output is transmitted by conducting to this direct current transducer; And,
A plurality of switch modules, respectively this switch module has a trigger end and electrically connects respectively that this cut-off circuit, a direct current power end electrically connect this direct current transducer and a direct current output electrically connects above-mentioned intermediate-frequency circuit, the above-mentioned input power supply of this trigger end sensing with this direct current transducer conducting to this intermediate-frequency circuit.
Described power circuit, wherein respectively this cut-off circuit has a filter and a unidirectional guiding subassembly of mutual series connection, the AC signal conducting that the above-mentioned input power supply of this filter limits is transmitted is to this direct current transducer, and this unidirectional guiding subassembly limits input power turn-on that other intermediate frequency signal output received to this cut-off circuit and the corresponding intermediate frequency signal output of establishing that connects thereof.
Described power circuit, wherein these filter two ends electrically connect trigger end and this intermediate frequency signal output of this switch module respectively.
Described power circuit, wherein these unidirectional guiding subassembly two ends electrically connect trigger end and this direct current transducer of this switch module respectively.
Described power circuit, the input power supply that box provided on wherein above-mentioned each television set has one first and one second voltage of different potentials height, the trigger end of this switch module electrically connects this an intermediate frequency signal output and a stabipack, this stabipack has a strangulation current potential, be less than or equal to this first and second voltage wherein than electronegative potential.
Described power circuit, wherein intermediate-frequency circuit has at least one multiple matrix switch and a plurality of intermediate frequency amplifier, those intermediate frequency amplifiers are located between this multiple matrix switch and those intermediate frequency signal outputs, and respectively the dc output end of this switch module electrically connects at least one this intermediate frequency amplifier.
Described power circuit, wherein respectively the dc output end of this switch module electrically connects contiguous respectively this intermediate frequency signal output and connects the intermediate frequency amplifier of establishing.
The power circuit of the satellite signals receiver that the utility model provides, effectively prevent the interference that the input power supply of box on the television set is carried secretly the tone control signal with those cut-off circuits, and by this switch module sensing respectively from the input power supply of intermediate frequency signal output, just control the amplifier of the direct current operative power source conducting of direct current transducer output to this intermediate-frequency circuit.
Description of drawings
Fig. 1 is the circuit function schematic diagram of known satellite signals receiver;
Fig. 2 is the circuit construction of electric power schematic diagram of known satellite signals receiver;
Fig. 3 provides the circuit construction of electric power schematic diagram of satellite signals receiver for the utility model first preferred embodiment;
Fig. 4 provides the circuit construction of electric power schematic diagram of satellite signals receiver for the utility model second preferred embodiment;
Fig. 5 provides the circuit construction of electric power schematic diagram of satellite signals receiver for the utility model the 3rd preferred embodiment.
Primary clustering symbol description in the accompanying drawing:
1,3,3 ', 4 satellite signals receivers; 13 frequency down circuit; 15,15 ' intermediate-frequency circuit; 17 multiple matrix switches; 155,156,157,158,155 ', 156 ', 157 ', 158 ' intermediate frequency amplifier; 30,35,40 power circuits; 32 direct current transducers; 34 cut-off circuits; 341 filters; 343 unidirectional guiding subassemblies; 36 switch modules; 361 trigger ends; 363 dc power supply terminals; 365 dc output ends; 42 stabipacks; LO1, LO2 local oscillator; OUT1, OUT2, OUT3, OUT4 intermediate frequency signal output; V1, V2 voltage control signal.
Embodiment
The power circuit of satellite signals receiver provided by the utility model includes:
A plurality of cut-off circuits, electrically connect a direct current transducer, respectively this cut-off circuit connects each intermediate frequency signal output of establishing above-mentioned satellite signals receiver respectively, receive by each satellite signals that box provides an input power supply in this intermediate frequency signal output on the set television set of user, respectively this cut-off circuit input power turn-on that the intermediate frequency signal output of correspondence is received is to this direct current transducer, and the AC signal that the intermediate frequency signal output is transmitted by conducting to this direct current transducer; And,
A plurality of switch modules, respectively this switch module has a trigger end and electrically connects respectively this cut-off circuit, a direct current power end and electrically connect the intermediate-frequency circuit that this direct current transducer and a direct current output electrically connect above-mentioned satellite signals receiver, the above-mentioned input power supply of this trigger end sensing with this direct current transducer conducting to this intermediate-frequency circuit.
The power circuit of this satellite signals receiver effectively prevents the interference that the input power supply of box on the television set is carried secretly the tone control signal with those cut-off circuits, and by this switch module sensing respectively from the input power supply of intermediate frequency signal output, just control the amplifier of the direct current operative power source conducting of direct current transducer output to this intermediate-frequency circuit.
In order to describe structure of the present utility model, feature and effect place in detail, lift following preferred embodiment and conjunction with figs. and be described as follows.
See also the satellite signals receiver 3 that the utility model first preferred embodiment is as shown in Figure 3 provided, have a power circuit 30 and the frequency down circuit 13 and the intermediate-frequency circuit 15 of satellite signals receiver 1 as shown in Figure 1, so the satellite signals that received of satellite antenna are after frequency down circuit 13 and intermediate-frequency circuit 15 are treated to intermediate frequency signal, can be from a plurality of intermediate frequency signal output OUT1, OUT2, OUT3, OUT4 output, receive box (not shown) reception on the television set that users institute is provided with respectively for a plurality of satellite signals; Wherein this power circuit 30 includes a direct current transducer 32, a plurality of cut-off circuit 34 and a plurality of switch module 36, and details are as follows for its circuit structure:
This direct current transducer 32 is in order to carry out the DC potential signal DC/DC conversion (DC to DC) output, the input power supply of box includes voltage control signal V1 or the V2 that drives local oscillator LO1, LO2 in the frequency down circuit 13 on from television set, after in case this direct current transducer 32 receives then through the direct current conversion process, the exportable power supply of flow operation at least always is with the required dc operation of circuit unit of prime frequency down circuit 13 that this satellite signals receiver 3 is provided and back level intermediate-frequency circuit 15.
Those cut-off circuits 34 electrically connect this direct current transducer 32, and respectively this cut-off circuit 34 connects respectively and establishes each intermediate frequency signal output OUT1, OUT2, OUT3, OUT4, and has a filter 341 and a unidirectional guiding subassembly 343; Respectively this filter 341 is in order to the AC signal filtering with kilohertz time (kHz) progression, and respectively this unidirectional guiding subassembly 343 electrically connects with the cut-off circuit 34 of adjacency.Box provides the input power supply in this intermediate frequency signal output OUT1, OUT2, OUT3, OUT4 on each television set, respectively this filter 341 will be imported the AC signal filtering of carrying secretly in the power supply, drive the 22k tone control signal of local oscillator LO1, LO2 in the frequency down circuit 13 as described above, make conducting to this direct current transducer 32 only be the voltage control signal V1 or the V2 of dc signal composition; This unidirectional guiding subassembly 343 makes input power source voltage controlling signal V1 or V2 conducting to this direct current transducer 32, and prevents that the dc signal composition that the cut-off circuit 34 of adjacency is transmitted from flowing through.
Respectively this switch module 36 has the respectively final stage intermediate frequency amplifier 155,156,157,158 of this cut-off circuit 34, a direct current power end 363 these direct current transducers 32 of electric connection and the above-mentioned intermediate-frequency circuit 15 of a direct current output 365 electric connections of a trigger end 361 electric connections; This trigger end 361 is that the above-mentioned input power supply of sensing makes switch module 36 conductings running, be arranged in after the filter 341 of cut-off circuit 34 for making trigger end 361 with switch module that present embodiment was provided 36, therefore sensing is by the DC potential composition after the filter 341 filtering AC signal, so that this dc power supply terminal 363 and dc output end 365 are electrically conducted, a dc operation power supply V3 conducting that makes direct current transducer 32 outputs is to respectively this intermediate frequency signal output OUT1, OUT2, OUT3, OUT4 corresponding amplifier 155,156,157,158.
Comprehensive as can be known above-mentioned, present embodiment provides the power circuit 30 of satellite signals receiver 3 not only effectively to prevent the interference that the input power supply of box on the television set is carried secretly the tone control signal with those cut-off circuits 34, and by these switch module 36 sensings respectively from intermediate frequency signal output OUT1, OUT2, OUT3, the input power supply of OUT4, the direct current operative power source V3 conducting of just controlling direct current transducer 32 output pairing final amplifier 155 to this intermediate-frequency circuit 15,156,157,158, also, can make intermediate-frequency circuit 15 have stable output signal power because of the switch module 36 trigger end 361 galvanic current position compositions that are received as.
What deserves to be mentioned is, when the level behind multiple matrix switch 17 of the satellite signals receiver 1 shown in 1 figure only connects the amplifier 155,156,157,158 of establishing single-stage, those switch modules 36 that present embodiment provides satellite signals receiver 3 are promptly in order to the final amplifier 155,156,157,158 of controlling intermediate-frequency circuit 15 and the conducting of direct current transducer 32; But if the back level of multiple matrix switch 17 is equipped with multistage amplifier, arbitrary amplifier that the amplifier that those switch modules 36 are connected only is required to be multiple matrix switch 17 back levels gets final product.The power circuit 35 of a satellite signals receiver 3 ' as shown in Figure 4, the power circuit 30 that is provided compared to aforementioned satellite signals receiver 3 has this direct current transducer 32 equally, those cut-off circuits 34 and switch module 36, difference only is that the intermediate-frequency circuit 15 ' of satellite signals receiver 3 ' is in each intermediate frequency signal output OUT1, OUT2, OUT3, has two-stage intermediate frequency amplifier 155 before the OUT4,156,157,158 and 155 ', 156 ', 157 ', 158 ', those switch modules 36 are control pre-amplifier 155,156,157,158 receive the direct current operative power source V3 of direct current transducers 32 outputs but not the amplifier 155 ' of final stage, 156 ', 157 ', 158 ', right and the foregoing description has the effect that is equal to.
In addition, because the input power supply from box on the television set includes voltage control signal V1 or the V2 that drives local oscillator LO1, LO2 in the frequency down circuit 13, also can cause those amplifiers 155,156,157,158 that different power outputs is arranged and drive those switch modules 36 of conducting with different DC potential; In order to overcome this problem, the utility model provides the power circuit of satellite signals receiver to also have as shown in Figure 5 another preferred embodiment, the partial structurtes of signal one power circuit 40 among the figure, this power circuit 40 is applied to the frequency down circuit 13 and the intermediate-frequency circuit 15 of satellite signals receiver 1 as shown in Figure 1 equally, and has this direct current transducer 32, those cut-off circuits 34 and switch module 36 equally.Compared to above-mentioned first preferred embodiment supplier of institute, this power circuit 40 also is provided with a plurality of stabipacks 42, electrically connects each intermediate frequency signal output OUT1, OUT2 (OUT3, OUT4 do not show) respectively, wherein:
Respectively these cut-off circuit 34 two ends connect respectively and establish this direct current transducer 32 and respectively this intermediate frequency signal output OUT1, OUT2 (OUT3, OUT4 do not show), and the interference that the input power supply that effectively prevents box on the television set that provides as the foregoing description is carried the tone control signal secretly is provided.
Respectively this switch module 36 is equally in order to the amplifier 155,156 (157,158 do not show) of this direct current transducer of conducting 32 output direct current operative power source V3 to this intermediate-frequency circuit 15, is that with the supplier's of the foregoing description institute difference the trigger end 361 of this switch module 36 electrically connects respectively this stabipack 42.
This stabipack 42 is that the component characteristic that is same as silicon reference diode is arranged, have a strangulation current potential be less than or equal to the voltage control signal V1 of local oscillator LO1 (LO2 does not show) or V2 than electronegative potential; On a satellite signals receiver 4 that this power circuit 40 is constituted receives from television set during the input power supply of box, the trigger end 361 that the stabipack 42 that corresponding each intermediate frequency signal output OUT1, OUT2 (OUT3, OUT4 do not show) are connected provides this switch module 36 is equal to the trigger voltage of its strangulation current potential, so no matter the current power that power supply is arbitrary voltage control signal V1 or V2 neither meeting change direct current transducer 32 amplifier that provides 155,156 (157,158 do not show) is provided.
In sum, the constituent components that the utility model is disclosed in previous embodiment only for illustrating, is not to be used for limiting scope of the present utility model, the alternative or variation of other equivalent elements, and the claim scope that also should be the utility model application contains.
Claims (7)
1. the power circuit of a satellite signals receiver, aforementioned satellite signals receiver has an intermediate-frequency circuit in order to handle the satellite signals after frequency reducing, intermediate frequency signal is exported from a plurality of intermediate frequency signal outputs, receive box reception on the television set that users institute is provided with respectively for a plurality of satellite signals, the aforementioned power source circuit is characterised in that:
A plurality of cut-off circuits, electrically connect a direct current transducer, respectively this cut-off circuit connects respectively and establishes above-mentioned each intermediate frequency signal output, box provides an input power supply in this intermediate frequency signal output on above-mentioned each television set, respectively this cut-off circuit input power turn-on that the intermediate frequency signal output of correspondence is received is to this direct current transducer, and the AC signal that the intermediate frequency signal output is transmitted by conducting to this direct current transducer; And,
A plurality of switch modules, respectively this switch module has a trigger end and electrically connects respectively that this cut-off circuit, a direct current power end electrically connect this direct current transducer and a direct current output electrically connects above-mentioned intermediate-frequency circuit, the above-mentioned input power supply of this trigger end sensing with this direct current transducer conducting to this intermediate-frequency circuit.
2. power circuit according to claim 1, it is characterized in that, respectively this cut-off circuit has a filter and a unidirectional guiding subassembly of mutual series connection, the AC signal conducting that the above-mentioned input power supply of this filter limits is transmitted is to this direct current transducer, and this unidirectional guiding subassembly limits input power turn-on that other intermediate frequency signal output received to this cut-off circuit and the corresponding intermediate frequency signal output of establishing that connects thereof.
3. power circuit according to claim 2 is characterized in that, these filter two ends electrically connect trigger end and this intermediate frequency signal output of this switch module respectively.
4. power circuit according to claim 2 is characterized in that, these unidirectional guiding subassembly two ends electrically connect trigger end and this direct current transducer of this switch module respectively.
5. power circuit according to claim 1 and 2, it is characterized in that, the input power supply that box provided on above-mentioned each television set has one first and one second voltage of different potentials height, the trigger end of this switch module electrically connects this an intermediate frequency signal output and a stabipack, this stabipack has a strangulation current potential, be less than or equal to this first and second voltage wherein than electronegative potential.
6. power circuit according to claim 1, it is characterized in that, intermediate-frequency circuit has at least one multiple matrix switch and a plurality of intermediate frequency amplifier, those intermediate frequency amplifiers are located between this multiple matrix switch and those intermediate frequency signal outputs, and respectively the dc output end of this switch module electrically connects at least one this intermediate frequency amplifier.
7. power circuit according to claim 6 is characterized in that, respectively the dc output end of this switch module electrically connects contiguous respectively this intermediate frequency signal output and connects the intermediate frequency amplifier of establishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205627261U CN201839389U (en) | 2010-10-08 | 2010-10-08 | Power source circuit of satellite signal receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205627261U CN201839389U (en) | 2010-10-08 | 2010-10-08 | Power source circuit of satellite signal receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201839389U true CN201839389U (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205627261U Expired - Lifetime CN201839389U (en) | 2010-10-08 | 2010-10-08 | Power source circuit of satellite signal receiver |
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| CN (1) | CN201839389U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853170A (en) * | 2014-02-14 | 2015-08-19 | 宏观微电子股份有限公司 | Integrated circuit chip for receiver collecting signals from satellites |
-
2010
- 2010-10-08 CN CN2010205627261U patent/CN201839389U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853170A (en) * | 2014-02-14 | 2015-08-19 | 宏观微电子股份有限公司 | Integrated circuit chip for receiver collecting signals from satellites |
| CN104853170B (en) * | 2014-02-14 | 2017-12-05 | 宏观微电子股份有限公司 | A kind of IC chip for being used to collect the receiver of satellite-signal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |