CN103297074A - Satellite receiver high-frequency special integrated circuit - Google Patents
Satellite receiver high-frequency special integrated circuit Download PDFInfo
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- CN103297074A CN103297074A CN2013100862704A CN201310086270A CN103297074A CN 103297074 A CN103297074 A CN 103297074A CN 2013100862704 A CN2013100862704 A CN 2013100862704A CN 201310086270 A CN201310086270 A CN 201310086270A CN 103297074 A CN103297074 A CN 103297074A
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Abstract
The invention discloses a satellite receiver high-frequency special integrated circuit which comprises a polarization selection function module and a function module. The polarization selection function module comprises a comparison module and a control circuit module. The function module is used for providing a working point for corresponding horizontal polarization or vertical polarization, and comprises a negative voltage generation module, a reference voltage and current module, a drain current regulation circuit module, a first amplifier tube deviation and protection module and a second amplifier tube deviation and protection module. The integrated circuit is concise in system, low in cost, convenient to produce in bulk and easy to maintain, has good high-frequency-noise-proof performance and signal-interference-proof performance, and has good consistency and good protection functions.
Description
Technical field
The present invention relates to a kind of satellite and receive the high frequency application-specific integrated circuit (ASIC), belong to integrated circuit fields.
Background technology
Along with developing rapidly of satellite television, the kind of tuner is also more and more abundanter, and wherein, the amplifying circuit in the tuner generally all needs suitable voltage and current, just can be in preferable working region.And the part tuner also needs horizontal polarization and perpendicular polarization selection function.Existing scheme generally adopts the discrete device scheme, but use the discrete device system configuration complicated, poor stability, production cycle is long, the cost height, though the design that also has some to adopt integrated circuit at present, for the tuner of the particular types that needs one tunnel work of horizontal polarization and perpendicular polarization, existing integrated circuit still is difficult to provide only function.
Summary of the invention
The object of the present invention is to provide a kind of simple in structurely, cost is low, and the satellite with better defencive function receives the high frequency application-specific integrated circuit (ASIC), thereby overcomes deficiency of the prior art.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of satellite receives the high frequency application-specific integrated circuit (ASIC), and it comprises:
Polarization selection function module comprises comparison module and control circuit module;
With thinking that corresponding horizontal polarization or perpendicular polarization provide the functional module of working point, comprise negative voltage generation module, reference voltage and current module, drain current adjustment circuit module, first amplifier tube bias and protection module and second amplifier tube bias and protection module;
Described comparison module is connected with described control circuit module; described control circuit is connected with described second amplifier tube bias and protection module with described first amplifier tube bias and protection module respectively; described reference voltage and current module are connected with described comparison module, described control circuit module and described drain current adjustment circuit module respectively, and described drain current adjustment circuit module is connected with described second amplifier tube bias and protection module with described first amplifier tube bias and protection module respectively.
Preferably, described comparison module selects the pin of signal to be connected with at least one in order to the input polarization; Described negative voltage generation module is connected with at least one pin in order to negative voltage output; Described first amplifier tube bias and protection module are connected in order to the pin with outside first amplifier tube drain electrode cooperation with at least one; Described first amplifier tube bias and protection module are connected in order to the pin with outside first amplifier tube grid cooperation with at least one; Described second amplifier tube bias and protection module are connected in order to the pin with outside second amplifier tube drain electrode cooperation with at least one; Described second amplifier tube bias and protection module are connected in order to the pin with outside second amplifier tube grid cooperation with at least one.
Preferably, the described pin of exporting in order to negative voltage is through a capacity earth.
Particularly preferred, described in order to serial connection one resistance before the pin of input polarization selection signal.
Preferably, described integrated circuit adopts the SOP8 integrated circuit package structure.
The present invention can select signal to select the polarization of a road in horizontal polarization or perpendicular polarization path in running order according to polarization, and another road is in closed condition; When taking place under the abnormal conditions, when the drain current of outside amplifier tube is no longer controlled, and when increasing to certain value, drain current is limited in certain value and is not exceeded the quata electric current and damage with the protection amplifier tube with interior.
Compared with prior art, beneficial effect of the present invention is:
1, system is succinct, cost is low, is convenient to produce in enormous quantities and easy-maintaining; Have good anti-high-frequency noise and antinoise signal and disturb characteristic mutually, have better consistency and better protect function;
2, have more suitably pin function, 8 pins are only arranged; Necessary peripheral components is few, only an external electric capacity, a resistance (this resistance can be adjusted resistance according to actual operating position, also can save this resistance in some cases) and two amplifier tubes.
Description of drawings
Fig. 1 is the circuit block diagram that satellite receives the high frequency application-specific integrated circuit (ASIC) in a preferred embodiment of the present invention;
Fig. 2 is the IC pin figure that satellite receives the high frequency application-specific integrated circuit (ASIC) among Fig. 1 embodiment.
Embodiment
Consult Fig. 1-2, this satellite receives the high frequency application-specific integrated circuit (ASIC) and comprises comparison module, the control circuit module, the negative voltage generation module, reference voltage and current module, drain current adjustment circuit module, first amplifier tube bias and protection module and second amplifier tube bias and protection module; Comparison module is connected with the control circuit module; control circuit is connected with second amplifier tube bias and protection module with first amplifier tube bias and protection module respectively; reference voltage and current module are connected with comparison module, control circuit module and drain current adjustment circuit module respectively, and the drain current adjustment circuit module is connected with second amplifier tube bias and protection module with first amplifier tube bias and protection module respectively.
Satellite receives the high frequency application-specific integrated circuit (ASIC) and adopts SOP8 integrated circuit packing forms, and wherein, comparison module is connected with the VPOL pin, is used for receiving polarization and selects signal; Described negative voltage generation module is connected with the CSUB pin, and described CSUB pin is through a capacity earth; First amplifier tube bias and protection module are connected with the D1 pin, are used for connecing outside first amplifier tube drain electrode, and first amplifier tube bias and protection module are connected with the G1 pin, are used for connecing the outside first amplifier tube grid; Second amplifier tube bias and protection module are connected with the D2 pin, are used for connecing outside second amplifier tube drain electrode, and second amplifier tube bias and protection module are connected with the G2 pin, are used for connecing the outside second amplifier tube grid.
The D1 pin connects outside first amplifier tube drain electrode, and the G1 pin connects the outside first amplifier tube grid, and the D2 pin connects outside second amplifier tube drain electrode, and the G2 pin connects the outside second amplifier tube grid; Satellite receiver provides one tunnel polarization and selects signal, the reference voltage signal that this signal and satellite receive the generation of high frequency application-specific integrated circuit (ASIC) relatively is input to the control circuit module, the control circuit module is selected a kind of in the two states according to comparison module output result: first kind of state is that the first amplifier tube work, second amplifier tube are closed, and second kind of state is that the second amplifier tube work, first amplifier tube are closed.Every kind of state is respectively applied to select the polarization of a road in horizontal polarization or perpendicular polarization path in running order, and another road is in closed condition.
Can connect a resistance before pin VPOL, this resistance can be adjusted resistance according to actual operating position, also can save this resistance in some cases.The negative voltage generation module is to generate negative voltage, and the CSUB pin is through capacitor C 1 ground connection, and capacitor C 1 is used for slackening the ripple on the negative voltage VSUB.First amplifier tube bias and protection module and second amplifier tube bias and protection module are used for when taking place under the abnormal conditions; when the drain current of outside amplifier tube is no longer controlled; and when increasing to certain value, drain current is limited in certain value and is not exceeded the quata electric current and damage with the protection amplifier tube with interior.
Below only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the rights protection scope of the present invention.
Claims (5)
1. a satellite receives the high frequency application-specific integrated circuit (ASIC), it is characterized in that it comprises:
Polarization selection function module comprises comparison module and control circuit module;
With thinking that corresponding horizontal polarization or perpendicular polarization provide the functional module of working point, comprise negative voltage generation module, reference voltage and current module, drain current adjustment circuit module, first amplifier tube bias and protection module and second amplifier tube bias and protection module;
Described comparison module is connected with described control circuit module; described control circuit is connected with described second amplifier tube bias and protection module with described first amplifier tube bias and protection module respectively; described reference voltage and current module are connected with described comparison module, described control circuit module and described drain current adjustment circuit module respectively, and described drain current adjustment circuit module is connected with described second amplifier tube bias and protection module with described first amplifier tube bias and protection module respectively.
2. satellite according to claim 1 receives the high frequency application-specific integrated circuit (ASIC), it is characterized in that, described comparison module selects the pin of signal to be connected with at least one in order to the input polarization; Described negative voltage generation module is connected with at least one pin in order to negative voltage output; Described first amplifier tube bias and protection module are connected in order to the pin with outside first amplifier tube drain electrode cooperation with at least one; Described first amplifier tube bias and protection module are connected in order to the pin with outside first amplifier tube grid cooperation with at least one; Described second amplifier tube bias and protection module are connected in order to the pin with outside second amplifier tube drain electrode cooperation with at least one; Described second amplifier tube bias and protection module are connected in order to the pin with outside second amplifier tube grid cooperation with at least one.
3. satellite according to claim 2 receives the high frequency application-specific integrated circuit (ASIC), it is characterized in that, the described pin of exporting in order to negative voltage is through a capacity earth.
4. satellite according to claim 2 receives the high frequency application-specific integrated circuit (ASIC), it is characterized in that, and is described in order to serial connection one resistance before the pin of input polarization selection signal.
5. satellite according to claim 1 and 2 receives the high frequency application-specific integrated circuit (ASIC), it is characterized in that, described integrated circuit adopts the SOP8 integrated circuit package structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100862704A CN103297074A (en) | 2013-03-18 | 2013-03-18 | Satellite receiver high-frequency special integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100862704A CN103297074A (en) | 2013-03-18 | 2013-03-18 | Satellite receiver high-frequency special integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103297074A true CN103297074A (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100862704A Pending CN103297074A (en) | 2013-03-18 | 2013-03-18 | Satellite receiver high-frequency special integrated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103297074A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1276322A1 (en) * | 2001-07-10 | 2003-01-15 | Matsushita Electric Industrial Co., Ltd | Satellite receiver and operation method |
| CN101895698A (en) * | 2010-06-29 | 2010-11-24 | 苏州市华芯微电子有限公司 | Integrated circuit with functions of bias and polarization selection |
| CN201699849U (en) * | 2010-06-29 | 2011-01-05 | 苏州华芯微电子股份有限公司 | Integrated circuit with bias and polarization choice function |
-
2013
- 2013-03-18 CN CN2013100862704A patent/CN103297074A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1276322A1 (en) * | 2001-07-10 | 2003-01-15 | Matsushita Electric Industrial Co., Ltd | Satellite receiver and operation method |
| CN101895698A (en) * | 2010-06-29 | 2010-11-24 | 苏州市华芯微电子有限公司 | Integrated circuit with functions of bias and polarization selection |
| CN201699849U (en) * | 2010-06-29 | 2011-01-05 | 苏州华芯微电子股份有限公司 | Integrated circuit with bias and polarization choice function |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130911 |