CN204989458U - Power adjustable radar transmitter - Google Patents
Power adjustable radar transmitter Download PDFInfo
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- CN204989458U CN204989458U CN201520692912.XU CN201520692912U CN204989458U CN 204989458 U CN204989458 U CN 204989458U CN 201520692912 U CN201520692912 U CN 201520692912U CN 204989458 U CN204989458 U CN 204989458U
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Abstract
The utility model discloses a power adjustable radar transmitter belongs to radar technical field. Because this transmitter power is adjustable, therefore can be through adjusting the requirement that its transmit power satisfies different test range. This radar transmitter is including the digital circuit board that is provided with digital circuit and the analog circuit board that is provided with analog circuit, for realizing the regulation to its output be provided with the AD unit on the digital circuit board, the AD unit with set up the pressure regulating circuit between the analog circuit. The pressure regulating circuit includes: phase inverter, amplifier, diode, PNP triode and NPN triode. The output of pressure regulating circuit links to each other with the amplifying unit among the analog circuit. The magnification through amplifying unit among the pressure regulating circuit adjusts analog circuit to realize radar transmitter output's regulation.
Description
Technical field
The utility model relates to a kind of transmitter, is specifically related to a kind of transmitter of power adjustable, belongs to Radar Technology field.
Background technology
Traditional radar transmitter only has single emissive power, can not change the size of its power.When the distance that will detect and scope become large, transmitter can only be changed; When the distance that need detect and scope diminish, continue the transmitter adopting power larger, although its request for utilization can be met, certain power dissipation can be caused; And due to power larger, on transmitter circuitry plate, the heating of electronic component is higher, is unfavorable for the prolongation in transmitter serviceable life.
Utility model content
In view of this, the utility model provides with a kind of radar transmitter of power adjustable, can by the requirement regulating its emissive power to carry out satisfied different investigative range.
The radar transmitter of described power adjustable, comprise the digital circuit board being provided with digital circuit and the analog circuit board being provided with mimic channel, described digital circuit for gathering the running parameter of mimic channel, and carries out feedback regulation by the control module of its inside to mimic channel; Described mimic channel comprises wave filter and two or more amplifies metal-oxide-semiconductor, and the signal for inputting it amplifies and filtering, and then output signal receives for radar receiver.
Comprise A/D unit and regulating circuit in addition, described A/D unit is arranged on digital circuit board, and A/D unit is connected with described control module, is converted to analog voltage signal for the digital signal sent by control module.
Described regulating circuit comprises: phase inverter, amplifier, diode, PNP triode and NPN triode; Its annexation is: the output terminal of described A/D unit is connected with the collector of PNP triode by resistance after amplifier; The emitter of described PNP triode is as the output terminal of regulating circuit; The output terminal of described control module is connected by the positive pole of phase inverter with described diode, and the negative pole of described diode is connected by the base stage of resistance with NPN triode, the grounded emitter of NPN triode, and collector is connected with the base stage of PNP triode by resistance; The break-make of described regulating circuit is controlled by the control module on digital circuit board.
The output terminal of described regulating circuit is connected with the amplifying unit in mimic channel, and described amplifying unit can change its enlargement factor by pressure regulation.
As a kind of optimal way of the present utility model, the amplification metal-oxide-semiconductor that described amplifying unit comprises for mimic channel self; The output terminal of described regulating circuit is connected with the above grid amplifying metal-oxide-semiconductor respectively; Front end circuit for regulating metal-oxide-semiconductor input voltage is set simultaneously between the output terminal and the amplification metal-oxide-semiconductor be attached thereto of regulating circuit.
As a kind of optimal way of the present utility model, described amplifying unit is the amplification chip that can be changed its enlargement factor by pressure regulation set up in mimic channel; Described amplifying unit is arranged in the input end that the mimic channel first order amplifies metal-oxide-semiconductor.Beneficial effect:
Because this transmitter power is adjustable, its output power of distance adjustment that will be able to detect according to reality, thus make it use flexibly, and can not power dissipation be caused; Simultaneously when we only need to detect certain scope, reduce power, also mean the heating of electronic component on transmitter circuitry plate, and the heating of whole transmitter, the life-span of whole transmitter can be extended.
Accompanying drawing explanation
Fig. 1 is the structural representation of radar transmitter;
Fig. 2 is radar transmitter power adjustments schematic diagram in embodiment 1;
Fig. 3 is radar transmitter power adjustments schematic diagram in embodiment 2;
Fig. 4 is regulating circuit schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The radar transmitter that the present embodiment provides a kind of emissive power adjustable, can by the requirement regulating its emissive power to carry out satisfied different investigative range.
Radar transmitter comprises digital circuit board and analog circuit board, as shown in Figure 1.Digital circuit wherein on digital circuit board, for gathering the running parameter of mimic channel in analog circuit board, as temperature, operating voltage, electric current, standing-wave ratio (SWR) and power etc., and carries out feedback regulation by the control module of its inside to mimic channel.Analog circuit board is used for amplifying and filtering the signal of its input, and then output signal receives for receiver.Usual analog circuit board is provided with multistage amplification metal-oxide-semiconductor, the mimic channel in the present embodiment adopts two-stage to amplify, and namely this mimic channel comprises one-level amplification metal-oxide-semiconductor, secondary amplification metal-oxide-semiconductor and wave filter.
Embodiment 1:
Change its enlargement factor by the bias voltage changing two metal-oxide-semiconductors (one-level amplifies metal-oxide-semiconductor and secondary amplifies metal-oxide-semiconductor) in mimic channel, thus realize the adjustment of transmitter power.Its principle as shown in Figure 2, digital circuit board arranges D/A conversion unit (the A/D unit be connected with control module, chip TLV5616 is adopted) in the present embodiment, digital signal for being sent by control module is converted to analog voltage signal, A/D unit is connected with the grid of metal-oxide-semiconductor in analog circuit board by regulating circuit, changes its enlargement factor by regulating its bias voltage.The break-make of regulating circuit is controlled by the control module on digital circuit board.Front end circuit for regulating metal-oxide-semiconductor input voltage is set simultaneously between metal-oxide-semiconductor and the output terminal of regulating circuit.The bias voltage controlling one of them or control two metal-oxide-semiconductors simultaneously can be selected.
Described regulating circuit and and A/D unit between connection as shown in Figure 4, described regulating circuit comprises phase inverter, diode, PNP triode and NPN triode, wherein the output terminal of A/D unit is connected with the collector of PNP triode by resistance after amplifier, and the emitter of PNP triode is connected with analog circuit board needing the grid of pressure regulation metal-oxide-semiconductor as the output terminal of regulating circuit.The control signal of control module is connected with the positive pole of diode by phase inverter, and the negative pole of diode is connected by the base stage of resistance with NPN triode, and the grounded emitter of NPN triode, collector is connected with the base stage of PNP triode by resistance.
Its principle of work is: when needing the power changing transmitter, control module output low level signal, and this low level signal becomes high level signal by phase inverter, diode current flow, NPN triode ON; PNP triode conducting, the emitter output voltage signal of PNP triode.Then change the output voltage of A/D chip according to required adjustment multiple, and then change metal-oxide-semiconductor bias voltage by regulating circuit, thus change its amplification coefficient.When input signal one timing, by changing the amplification coefficient of metal-oxide-semiconductor, just can realize the change that mimic channel exports amplifying power, namely changing the output power of radar transmitter.
Embodiment 2
In mimic channel, the input end that the first order amplifies metal-oxide-semiconductor increases the amplification chip (amplifying unit) that can be changed its enlargement factor by pressure regulation, is realized the adjustment of transmitter power by the enlargement factor changing this amplifying unit.Its principle as shown in Figure 3, digital circuit board arranges the D/A conversion unit (A/D unit adopts chip TLV5616 in the present embodiment) be connected with control module, is converted to analog voltage signal for the digital signal sent by control module; A/D unit is connected with the amplifying unit in mimic channel by regulating circuit, for changing its enlargement factor.The break-make of regulating circuit is controlled by the control module on digital circuit board.Regulating circuit in the present embodiment is identical with the regulating circuit in embodiment 1, and in regulating circuit, the emitter of PNP triode is connected with the amplifying unit arranged in mimic channel as the output terminal of regulating circuit.
When needing the power changing transmitter, regulated the enlargement factor of amplifying unit by A/D unit and regulating circuit.This kind of mode, by first doing an amplification to input small-signal, namely by changing the size being input to the signal of metal-oxide-semiconductor, changes the size of its output power.Relative to embodiment 1, this kind of regulative mode controls transmitter the small-signal of input, and its stability is better.
In sum, these are only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the radar transmitter of a power adjustable, comprise the digital circuit board being provided with digital circuit and the analog circuit board being provided with mimic channel, described digital circuit for gathering the running parameter of mimic channel, and carries out feedback regulation by the control module of its inside to mimic channel; Described mimic channel comprises wave filter and two or more amplifies metal-oxide-semiconductor, and the signal for inputting it amplifies and filtering, and then output signal receives for radar receiver;
It is characterized in that, also comprise A/D unit and regulating circuit, described A/D unit is arranged on digital circuit board, and A/D unit is connected with described control module, is converted to analog voltage signal for the digital signal sent by control module,
Described regulating circuit comprises: phase inverter, amplifier, diode, PNP triode and NPN triode; Its annexation is: the output terminal of described A/D unit is connected with the collector of PNP triode by resistance after amplifier; The emitter of described PNP triode is as the output terminal of regulating circuit; The output terminal of described control module is connected by the positive pole of phase inverter with described diode, and the negative pole of described diode is connected by the base stage of resistance with NPN triode, the grounded emitter of NPN triode, and collector is connected with the base stage of PNP triode by resistance; The break-make of described regulating circuit is controlled by the control module on digital circuit board;
The output terminal of described regulating circuit is connected with the amplifying unit in mimic channel, and described amplifying unit can change its enlargement factor by pressure regulation.
2. the radar transmitter of power adjustable as claimed in claim 1, is characterized in that, the amplification metal-oxide-semiconductor that described amplifying unit comprises for mimic channel self; The output terminal of described regulating circuit is connected with the above grid amplifying metal-oxide-semiconductor respectively; Front end circuit for regulating metal-oxide-semiconductor input voltage is set simultaneously between the output terminal and the amplification metal-oxide-semiconductor be attached thereto of regulating circuit.
3. the radar transmitter of power adjustable as claimed in claim 1, it is characterized in that, described amplifying unit is the amplification chip that can be changed its enlargement factor by pressure regulation set up in mimic channel; Described amplifying unit is arranged in the input end that the mimic channel first order amplifies metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520692912.XU CN204989458U (en) | 2015-09-09 | 2015-09-09 | Power adjustable radar transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520692912.XU CN204989458U (en) | 2015-09-09 | 2015-09-09 | Power adjustable radar transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN204989458U true CN204989458U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520692912.XU Active CN204989458U (en) | 2015-09-09 | 2015-09-09 | Power adjustable radar transmitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020191727A1 (en) * | 2019-03-28 | 2020-10-01 | 华为技术有限公司 | Radar power control method and device |
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2015
- 2015-09-09 CN CN201520692912.XU patent/CN204989458U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020191727A1 (en) * | 2019-03-28 | 2020-10-01 | 华为技术有限公司 | Radar power control method and device |
| US20220011425A1 (en) * | 2019-03-28 | 2022-01-13 | Huawei Technologies Co., Ltd. | Radar power control method and apparatus |
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