CN105186486A - Four-channel anti-interference antenna radio frequency power supply circuit - Google Patents
Four-channel anti-interference antenna radio frequency power supply circuit Download PDFInfo
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- CN105186486A CN105186486A CN201510667791.8A CN201510667791A CN105186486A CN 105186486 A CN105186486 A CN 105186486A CN 201510667791 A CN201510667791 A CN 201510667791A CN 105186486 A CN105186486 A CN 105186486A
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Abstract
The invention discloses a four-channel anti-interference antenna radio frequency power supply circuit. The circuit comprises a self-recovery overcurrent protection circuit F1, a DC filter unit N1, a switch-type power switching circuit, and a four-way linear voltage-stabilizing circuit. The circuit connection is achieved in a mode that DC input is connected with the self-recovery overcurrent protection circuit F1, the self-recovery overcurrent protection circuit F1 is connected with the DC filter unit N1, the DC filter unit N1 is connected with the switch-type power switching circuit, and the switch-type power switching circuit is connected with the four-way linear voltage-stabilizing circuit. The beneficial effects of the invention are that the circuit achieves voltage conversion through the combination of a high-withstand-voltage non-isolation DCDC switch power conversion circuit with a miniwatt linear voltage-stabilizing circuit and outputs a DC 5V voltage; noises and ripples can be controlled under the level of mV, and can be lower than dozens of microvolt; a preposed standard DC filter unit N1 can meet the requirements of related indexes of electromagnetic compatibility; the size is smaller; the design cost is lower; and the circuit can supply a very stable DC voltage for a radio frequency channel.
Description
Technical field
The present invention relates to power supply circuits, particularly a kind of four-way anti-interference antenna radio frequency powered circuit, is applied to Beidou satellite navigation system.
Background technology
At present, day by day perfect along with China's Beidou satellite system, the navigation product for Beidou satellite system has had to be applied widely.Big Dipper anti-interference antenna adopts four antenna element to carry out receiving satellite signal, and through four radio-frequency channels of inner antenna for digital circuit provides anti-interference process signal, one of them passage is main channel, and other three passages are accessory channel.Anti-interference antenna requires to be received by antenna element and signal through four radio-frequency channel treatment and supplied digital processing elements can have lower noise jamming, therefore requires that the power supply of passage has lower ripple and noise.The supply power voltage of radio-frequency channel is direct current 5V, the electric power system of anti-interference antenna is 28V direct current system, the non-isolated DC/DC converter circuit of many employings or isolated DC/DC power module are that radio-frequency channel powers at present, adopt non-isolated DC/DC converter circuit switching noise larger, be approximately 100mV, the normal work of radio frequency circuit can produce larger harmful effect, switching noise can affect the transmission quality of radiofrequency signal, be unfavorable for the normal table transmission of radiofrequency signal, and then affect the antijamming capability of anti-interference antenna, reduce the accuracy of its antijamming capability and locating information.Adopt isolated DC/DC power module volume ratio larger, conventional-volume is approximately 50 × 25 × 10mm, cost compare is high, space flight level Module Price is approximately 3,000 yuan, and the operating current of four passages is less, and operating current is approximately 100mA, be unfavorable for the type selecting of isolated DC/DC power module, and its conversion efficiency is lower, is approximately about 80%, more power loss can be caused.Interiors of products all includes digital circuit usually, digital circuit also needs direct current 5V voltage to power, employing digital circuit and radio circuit are parallel to the mode that a road direct current 5V powers, the noise that two parts circuit produces can be interacted by input power, all can exert an adverse impact to the normal work of two parts circuit, be unfavorable for all technical of whole product, if adopt two-way DC/DC change-over circuit to convert two-way direct current 5V to be respectively digital circuit and radio circuit is powered, greatly can improve design volume and the design cost of product, improve the design difficulty of product and be unfavorable for the market competitiveness of product.
Summary of the invention
In view of the deficiency that prior art exists, the invention provides a kind of four-way anti-interference antenna radio frequency powered circuit, input voltage range is 18 to 50V, for the feature that radio-frequency channel operating current is smaller, the mode adopting high withstand voltage non-isolated DCDC Switching Power Supply change-over circuit to combine with small-power linear voltage-stabilizing circuit carries out voltage transitions, export direct current 5V voltage, noise and ripple can control below mV level, tens μ V can be low to moderate, the DC filter unit of preposition standard is to meet the index of correlation requirement of electromagnetic compatibility, small volume, design cost is lower, can be the direct current supply voltage that radio-frequency channel provides highly stable.
The present invention for achieving the above object, the technical scheme taked is: a kind of four-way anti-interference antenna radio frequency powered circuit, is characterized in that: comprise self-recovering type current foldback circuit F1, DC filter unit N1, switch mode power change-over circuit, four linear voltage stabilizing circuits; Circuit connects for direct current input is connected with self-recovering type current foldback circuit; self-recovering type current foldback circuit is connected with DC filter unit N1; DC filter unit is connected with switch mode power change-over circuit, and switch mode power change-over circuit is connected with four linear voltage stabilizing circuits.
Beneficial effect of the present invention is: adopt four tunnel small-power linear stabilized power supply change-over circuits to be respectively four radio-frequency channels, tunnel and power, power supply ripple and noise can control in μ V rank, very pure stabilized voltage power supply can be provided for radio-frequency channel, switching noise is very little, be approximately 100 μ V, the normal work of radio circuit can be ensured completely, switching noise affects the transmission quality of radiofrequency signal hardly, be conducive to the normal table transmission of radiofrequency signal, ensure that four radio-frequency channels, tunnel are all in optimum Working, and then improve the antijamming capability of anti-interference antenna and the accuracy of locating information.The switch voltage-stabilizing circuit of high withstand voltage demand is adopted to be arranged on circuit front-end, the long-term availability of equipment can be improved, high voltage transient is avoided to cause damage to switching power source chip, and its small volume, cost is lower, can draw a road power-switching circuit again provides 5V direct voltage to be separately supplying digital circuits, digital circuit and radio circuit can be reduced further and produce interference mutually under operating state at the same time, meet design production requirement, best operating state can be reached with lower design cost and less design space, be conducive to the design ap-plication of product and can the competitiveness of product in market be improved, front end arranges DC filter unit, the stability adding equipment use also can meet the index of correlation requirement of electromagnetic compatibility, improve the practicality of product.
Accompanying drawing explanation
Fig. 1 is that circuit of the present invention connects block diagram;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 1 and Figure 2, a kind of four-way anti-interference antenna radio frequency powered circuit, is characterized in that: comprise self-recovering type current foldback circuit F1, DC filter unit N1, switch mode power change-over circuit, four linear voltage stabilizing circuits; Circuit connects for direct current input is connected with self-recovering type current foldback circuit; self-recovering type current foldback circuit is connected with DC filter unit N1; DC filter unit is connected with switch mode power change-over circuit, and switch mode power change-over circuit is connected with four linear voltage stabilizing circuits.
Physical circuit connects: self-recovering type current foldback circuit is made up of resettable fuse F1; The positive pole of direct current input connects 1 pin of DC filter unit N1 by resettable fuse F1, the negative pole of direct current input connects 5 pin of DC filter unit N1,3 pin of DC filter unit N1 and the equal ground connection of 4 pin.
4 pin of switch mode power change-over circuit breaker in middle power supply chip N2 are connected with one end of resistance R2, 6 pin respectively with electric capacity C2, one end of resistance R1 connects, the other end of resistance R1 by electric capacity C1 respectively with electric capacity C2, the other end of resistance R2 and 7 pin of switching power source chip N2, one end of resistance R3, the negative pole of electric capacity C5 and electric capacity C6, one end of electric capacity C3 and 2 pin of DC filter unit N1 connect and ground connection, 5 pin of switching power source chip N2 respectively with the other end of resistance R3, one end of resistance R4 connects, 8 pin of switching power source chip N2 respectively with the negative pole of diode D1, inductance L 1, one end of electric capacity C4 connects, the plus earth of diode D1, 1 pin of switching power source chip N2 connects the other end of electric capacity C4, another termination capacitor C5 of inductance L 1 and the positive pole of electric capacity C6, 2 pin of switching power source chip N2 are connected with the other end of electric capacity C3 and 2 pin of DC filter unit N1 respectively.
After 8 pin of four linear voltage stabilizing circuit neutral line pressurizer N3 are connected with 5 pin respectively with electric capacity C7, one end of electric capacity C8 and one end of fuse F2 connect, 3 pin of linear voltage regulator N3, 6 pin, 7 pin are connected with one end of resistance R5 and 2 pin of linear voltage regulator N3 respectively by resistance R6, 1 pin of linear voltage regulator N3 respectively with electric capacity C9, electric capacity C10, one end of electric capacity C11 and the other end of resistance R5 connect, and be the output cathode of passage one, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, the other end of electric capacity C11 and the 7 pin ground connection of linear voltage regulator N3 are also the output negative pole of passage one.
After 8 pin of linear voltage regulator N4 are connected with 5 pin respectively with electric capacity C12, one end of electric capacity C13 and one end of fuse F3 connect, 3 pin of linear voltage regulator N4, 6 pin, 7 pin are connected with one end of resistance R7 and 2 pin of linear voltage regulator N4 respectively by resistance R8, 1 pin of linear voltage regulator N4 respectively with electric capacity C14, electric capacity C15, one end of electric capacity C16 and the other end of resistance R7 connect, and be the output cathode of passage two, electric capacity C12, electric capacity C13, electric capacity C14, electric capacity C15, the other end of electric capacity C16 and the 7 pin ground connection of linear voltage regulator N4 are also the output negative pole of passage two.
After 8 pin of linear voltage regulator N5 are connected with 5 pin respectively with electric capacity C17, one end of electric capacity C18 and one end of fuse F4 connect, 3 pin of linear voltage regulator N5, 6 pin, 7 pin are connected with one end of resistance R9 and 2 pin of linear voltage regulator N5 respectively by resistance R10, 1 pin of linear voltage regulator N5 respectively with electric capacity C19, electric capacity C20, one end of electric capacity C21 and the other end of resistance R9 connect, and be the output cathode of passage three, electric capacity C17, electric capacity C18, electric capacity C19, electric capacity C20, the other end of electric capacity C21 and the 7 pin ground connection of linear voltage regulator N5 are also the output negative pole of passage three.
After 8 pin of linear voltage regulator N6 are connected with 5 pin respectively with electric capacity C22, one end of electric capacity C23 and one end of fuse F5 connect, 3 pin of linear voltage regulator N6, 6 pin, 7 pin are connected with one end of resistance R11 and 2 pin of linear voltage regulator N6 respectively by resistance R12, 1 pin of linear voltage regulator N6 respectively with electric capacity C24, electric capacity C25, one end of electric capacity C26 and the other end of resistance R11 connect, and be the output cathode of passage four, electric capacity C22, electric capacity C23, electric capacity C24, electric capacity C25, the other end of electric capacity C26 and the 7 pin ground connection of linear voltage regulator N6 are also the output negative pole of passage four, the positive pole of the electric capacity C6 of another termination switch mode power change-over circuit of fuse F2, fuse F3, fuse F4, fuse F5.
The switching power source chip of to be model the be TPS54360 that switching power source chip N2 adopts; The model that linear voltage regulator N3, linear voltage regulator N4, linear voltage regulator N5, linear voltage regulator N6 adopt is LT1963, and the model that DC filter unit N1 adopts is WKF312803.
In Fig. 2, F1 is resettable fuse, and concrete model is selected according to the power for operation of equipment and operating voltage, forms self-recovering type short-circuit protection circuit.
N1 is universal DC filter unit, selects concrete model according to relevant electromagnetic compatibility index request and voltage and current, forms DC filter unit.
The switching power source chip N2 being TPS54360 around model is designed to high withstand voltage Switching Power Supply change-over circuit, the input voltage of direct current 18V ~ 50V is converted to direct current 6.2V output voltage, forms switch mode power change-over circuit.
N3, N4, N5, N6 employing model is that the linear voltage regulator of LT1963 forms four linear voltage stabilizing circuits, input 6.2V is converted to 5V direct current and exports, be respectively follow-up four radio-frequency channels, tunnel and power.
Claims (2)
1. a four-way anti-interference antenna radio frequency powered circuit, is characterized in that: comprise self-recovering type current foldback circuit F1, DC filter unit N1, switch mode power change-over circuit, four linear voltage stabilizing circuits; Circuit connects for direct current input is connected with self-recovering type current foldback circuit; self-recovering type current foldback circuit is connected with DC filter unit N1; DC filter unit is connected with switch mode power change-over circuit, and switch mode power change-over circuit is connected with four linear voltage stabilizing circuits.
2. a kind of four-way anti-interference antenna radio frequency powered circuit according to claim 1, is characterized in that: described self-recovering type current foldback circuit is made up of resettable fuse F1; The positive pole of direct current input connects 1 pin of DC filter unit N1 by resettable fuse F1, the negative pole of direct current input connects 5 pin of DC filter unit N1,3 pin of DC filter unit N1 and the equal ground connection of 4 pin;
4 pin of described switch mode power change-over circuit breaker in middle power supply chip N2 are connected with one end of resistance R2, 6 pin respectively with electric capacity C2, one end of resistance R1 connects, the other end of resistance R1 by electric capacity C1 respectively with electric capacity C2, the other end of resistance R2 and 7 pin of switching power source chip N2, one end of resistance R3, the negative pole of electric capacity C5 and electric capacity C6, one end of electric capacity C3 and 2 pin of DC filter unit N1 connect and ground connection, 5 pin of switching power source chip N2 respectively with the other end of resistance R3, one end of resistance R4 connects, 8 pin of switching power source chip N2 respectively with the negative pole of diode D1, inductance L 1, one end of electric capacity C4 connects, the plus earth of diode D1, 1 pin of switching power source chip N2 connects the other end of electric capacity C4, another termination capacitor C5 of inductance L 1 and the positive pole of electric capacity C6, 2 pin of switching power source chip N2 are connected with the other end of electric capacity C3 and 2 pin of DC filter unit N1 respectively,
After 8 pin of described four linear voltage stabilizing circuit neutral line pressurizer N3 are connected with 5 pin respectively with electric capacity C7, one end of electric capacity C8 and one end of fuse F2 connect, 3 pin of linear voltage regulator N3, 6 pin, 7 pin are connected with one end of resistance R5 and 2 pin of linear voltage regulator N3 respectively by resistance R6, 1 pin of linear voltage regulator N3 respectively with electric capacity C9, electric capacity C10, one end of electric capacity C11 and the other end of resistance R5 connect, and be the output cathode of passage one, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, the other end of electric capacity C11 and the 7 pin ground connection of linear voltage regulator N3 are also the output negative pole of passage one,
After 8 pin of linear voltage regulator N4 are connected with 5 pin respectively with electric capacity C12, one end of electric capacity C13 and one end of fuse F3 connect, 3 pin of linear voltage regulator N4, 6 pin, 7 pin are connected with one end of resistance R7 and 2 pin of linear voltage regulator N4 respectively by resistance R8, 1 pin of linear voltage regulator N4 respectively with electric capacity C14, electric capacity C15, one end of electric capacity C16 and the other end of resistance R7 connect, and be the output cathode of passage two, electric capacity C12, electric capacity C13, electric capacity C14, electric capacity C15, the other end of electric capacity C16 and the 7 pin ground connection of linear voltage regulator N4 are also the output negative pole of passage two,
After 8 pin of linear voltage regulator N5 are connected with 5 pin respectively with electric capacity C17, one end of electric capacity C18 and one end of fuse F4 connect, 3 pin of linear voltage regulator N5, 6 pin, 7 pin are connected with one end of resistance R9 and 2 pin of linear voltage regulator N5 respectively by resistance R10, 1 pin of linear voltage regulator N5 respectively with electric capacity C19, electric capacity C20, one end of electric capacity C21 and the other end of resistance R9 connect, and be the output cathode of passage three, electric capacity C17, electric capacity C18, electric capacity C19, electric capacity C20, the other end of electric capacity C21 and the 7 pin ground connection of linear voltage regulator N5 are also the output negative pole of passage three,
After 8 pin of linear voltage regulator N6 are connected with 5 pin respectively with electric capacity C22, one end of electric capacity C23 and one end of fuse F5 connect, 3 pin of linear voltage regulator N6, 6 pin, 7 pin are connected with one end of resistance R11 and 2 pin of linear voltage regulator N6 respectively by resistance R12, 1 pin of linear voltage regulator N6 respectively with electric capacity C24, electric capacity C25, one end of electric capacity C26 and the other end of resistance R11 connect, and be the output cathode of passage four, electric capacity C22, electric capacity C23, electric capacity C24, electric capacity C25, the other end of electric capacity C26 and the 7 pin ground connection of linear voltage regulator N6 are also the output negative pole of passage four, the positive pole of the electric capacity C6 of another termination switch mode power change-over circuit of fuse F2, fuse F3, fuse F4, fuse F5,
The switching power source chip of to be model the be TPS54360 that switching power source chip N2 adopts; The model that linear voltage regulator N3, linear voltage regulator N4, linear voltage regulator N5, linear voltage regulator N6 adopt is LT1963, and the model that DC filter unit N1 adopts is WKF312803.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510667791.8A CN105186486A (en) | 2015-10-16 | 2015-10-16 | Four-channel anti-interference antenna radio frequency power supply circuit |
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| CN201510667791.8A CN105186486A (en) | 2015-10-16 | 2015-10-16 | Four-channel anti-interference antenna radio frequency power supply circuit |
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| CN105186486A true CN105186486A (en) | 2015-12-23 |
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| CN201510667791.8A Pending CN105186486A (en) | 2015-10-16 | 2015-10-16 | Four-channel anti-interference antenna radio frequency power supply circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106411119A (en) * | 2016-11-21 | 2017-02-15 | 天津七六四通信导航技术有限公司 | Power supply module satisfying requirements for power supply unit of anti-interference antenna of airborne satellite |
| CN109782235A (en) * | 2019-01-30 | 2019-05-21 | 成都西科微波通讯有限公司 | A kind of anti-jamming circuit of 77GHz automobile collision avoidance radar |
| CN111953499A (en) * | 2020-07-06 | 2020-11-17 | 南京熊猫电子股份有限公司 | Intelligent board card debugging power supply device |
| CN112751580A (en) * | 2020-12-25 | 2021-05-04 | 中国电子科技集团公司第十四研究所 | P-waveband LTCC assembly based on clock shielding and power filtering |
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| CN204376698U (en) * | 2014-12-21 | 2015-06-03 | 天津七六四通信导航技术有限公司 | The airborne power reguirements protective circuit of new edition |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411119A (en) * | 2016-11-21 | 2017-02-15 | 天津七六四通信导航技术有限公司 | Power supply module satisfying requirements for power supply unit of anti-interference antenna of airborne satellite |
| CN109782235A (en) * | 2019-01-30 | 2019-05-21 | 成都西科微波通讯有限公司 | A kind of anti-jamming circuit of 77GHz automobile collision avoidance radar |
| CN109782235B (en) * | 2019-01-30 | 2023-09-05 | 成都西科微波通讯有限公司 | Anti-interference circuit of 77GHz automobile anti-collision radar |
| CN111953499A (en) * | 2020-07-06 | 2020-11-17 | 南京熊猫电子股份有限公司 | Intelligent board card debugging power supply device |
| CN112751580A (en) * | 2020-12-25 | 2021-05-04 | 中国电子科技集团公司第十四研究所 | P-waveband LTCC assembly based on clock shielding and power filtering |
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Application publication date: 20151223 |