CN217766603U - Ultra-wideband power detection circuit and system - Google Patents
Ultra-wideband power detection circuit and system Download PDFInfo
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- CN217766603U CN217766603U CN202221657581.2U CN202221657581U CN217766603U CN 217766603 U CN217766603 U CN 217766603U CN 202221657581 U CN202221657581 U CN 202221657581U CN 217766603 U CN217766603 U CN 217766603U
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The utility model discloses an ultra wide band power detection circuitry and system. The ultra-wideband power detection circuit includes: the input end of the power distribution unit is used for accessing a coupling signal of the ultra-wideband radio frequency link, and the power distribution unit is used for shunting the signal input by the input end and then outputting the signal by a first output end and a second output end of the power distribution unit; the input end of the power voltage detection unit is electrically connected with the first output end of the power distribution unit and used for detecting the voltage of the coupling signal; the input end of the frequency divider unit is electrically connected with the second output end of the power distribution unit, and the frequency divider unit is used for dividing the frequency of the coupling signal and outputting the frequency divided coupling signal from the output end of the frequency divider unit; and the processing unit is electrically connected with the output end of the power voltage detection unit and the output end of the frequency divider unit and is used for calculating the frequency of the coupling signal according to the output signal of the frequency divider unit and calculating the power of the coupling signal according to the frequency of the coupling signal and the voltage of the coupling signal. The utility model discloses can improve the accuracy of power detection.
Description
Technical Field
The embodiment of the utility model provides a relate to the power detection technique, especially relate to an ultra wide band power detection circuitry and system.
Background
With the rapid development of microwave technology, the requirements of communication systems on communication capacity and bandwidth are higher and higher, and the ultra-wideband technology is more and more emphasized; the ultra-wideband technology is a development direction of future mobile communication technology because of its larger bandwidth and can carry more information, thereby being capable of improving communication capacity and speed, and meanwhile, the ultra-wideband technology is also more and more widely applied in electronic countermeasure, which can even determine success or failure of future war.
At present, the ultra-wideband power amplifier is mainly used in the fields of testing and measuring instruments, communication or interference, aviation control and the like, and the product has the functions of power detection, automatic power control, output standing-wave ratio protection and the like. Since the power amplifier mainly amplifies small rf signals, users are more concerned about how much small rf signals are amplified, i.e., how much output power is, and therefore, the requirement for the ultra-wideband power amplifier to have an accurate power detection function is increasing.
Because the ultra-wideband is very wide in relative bandwidth, and some frequency doubling devices or even multiple frequency doubling devices have limitations on any power detection device and chip, and the accurate power detection function in the full frequency band cannot be realized, so that the realization of the accurate power detection function only by the power detection device is not practical.
SUMMERY OF THE UTILITY MODEL
The utility model provides an ultra wide band power detection circuitry and system to the realization is to the accurate detection of ultra wide band power signal.
In a first aspect, an embodiment of the present invention provides an ultra wide band power detection circuit, including:
the input end of the power distribution unit is used for accessing a coupling signal of an ultra-wideband radio frequency link, and the power distribution unit is used for shunting the signal input by the input end and then outputting the signal by a first output end and a second output end of the power distribution unit;
the input end of the power voltage detection unit is electrically connected with the first output end of the power distribution unit, and the power voltage detection unit is used for detecting the voltage of the coupling signal;
the input end of the frequency divider unit is electrically connected with the second output end of the power distribution unit, and the frequency divider unit is used for dividing the frequency of the coupling signal and outputting the frequency divided coupling signal by the output end of the frequency divider unit;
and the processing unit is electrically connected with the output end of the power voltage detection unit and the output end of the frequency divider unit, and is used for calculating the frequency of the coupling signal according to the output signal of the frequency divider unit and calculating the power of the coupling signal according to the frequency of the coupling signal and the voltage of the coupling signal.
Optionally, the frequency divider unit comprises cascaded N frequency dividers; n is greater than or equal to 2.
Optionally, the frequency divider of the first stage is electrically connected to the second output terminal of the power distribution unit, and the frequency division multiple of the frequency divider of the mth stage is greater than that of the frequency divider of the M +1 th stage; wherein M is more than or equal to 1 and less than or equal to N-1.
Optionally, the division multiples of the N dividers are equal.
Optionally, the processing unit is a micro control unit.
Optionally, the ultra-wideband power detection circuit further includes:
and the upper computer is in communication connection with the processing unit.
Optionally, the ultra-wideband power detection circuit further includes: and the power automatic control unit is configured to control the output power of the ultra-wideband radio frequency link to be within a preset range according to the control signal of the processing unit.
Optionally, the power automatic control unit comprises: the circuit comprises an input end, an output end, a control end, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, a second diode, a third diode and a fourth diode;
a first end of the first capacitor is used as an input end of the automatic power control unit, and a second end of the first capacitor is electrically connected with a cathode of the first diode;
the first end of the first resistor is electrically connected with the second end of the first capacitor, and the second end of the first resistor is grounded;
the cathode of the second diode is electrically connected with the anode of the first diode;
a first end of the second resistor is electrically connected with an anode of the second diode, a first end of the third resistor is electrically connected with a second end of the second resistor, a second end of the third resistor is used as a control end of the automatic power control unit, a first end of the second capacitor is electrically connected with a second end of the second resistor, and a second end of the second capacitor is grounded;
the anode of the third diode is electrically connected with the anode of the second diode, and the anode of the fourth diode is electrically connected with the cathode of the third diode;
a first end of the fourth resistor is electrically connected with a cathode of the fourth diode, and a second end of the fourth resistor is grounded; and a first end of the third capacitor is electrically connected with a cathode of the fourth diode, and a second end of the third capacitor is used as an output end of the automatic power control unit.
Optionally, the first diode, the second diode, the third diode and the fourth diode are all PIN tubes.
In a second aspect, an embodiment of the present invention further provides an ultra-wideband power detection system, where the ultra-wideband power detection system includes the ultra-wideband power detection circuit and the ultra-wideband radio frequency link described in the first aspect; and the coupling signal output end of the ultra-wideband radio frequency link is electrically connected with the input end of the power distribution unit.
The utility model discloses technical scheme, the ultra wide band power detection circuitry of adoption, include: the input end of the power distribution unit is used for accessing a coupling signal of the ultra-wideband radio frequency link, and the power distribution unit is used for shunting the signal input by the input end and then outputting the signal by a first output end and a second output end of the power distribution unit; the input end of the power voltage detection unit is electrically connected with the first output end of the power distribution unit, and the power voltage detection unit is used for detecting the voltage of the coupling signal; the input end of the frequency divider unit is electrically connected with the second output end of the power distribution unit, and the frequency divider unit is used for dividing the frequency of the coupling signal and outputting the frequency divided coupling signal from the output end of the frequency divider unit; and the processing unit is electrically connected with the output end of the power voltage detection unit and the output end of the frequency divider unit and is used for calculating the frequency of the coupling signal according to the output signal of the frequency divider unit and calculating the power of the coupling signal according to the frequency of the coupling signal and the voltage of the coupling signal. When the power of the ultra-wideband signal is detected, the frequency of the ultra-wideband signal is automatically involved in the calculation of the power, so that the accuracy of the power detection of the ultra-wideband signal can be greatly improved.
Drawings
Fig. 1 is a schematic circuit diagram of an ultra-wideband power detection circuit according to an embodiment of the present invention;
fig. 2 is a graph illustrating a relationship between voltage, frequency and power of an ultra-wideband signal according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of another ultra-wideband power detection circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of another ultra-wideband power detection circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of an ultra-wideband power detection system according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of an automatic power control unit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is the embodiment of the utility model provides a circuit structure schematic diagram of an ultra wide band power detection circuit, refer to fig. 1, ultra wide band power detection circuit includes: the input end of the power distribution unit 101 is used for accessing a coupling signal of an ultra-wideband radio frequency link, and the power distribution unit 101 is used for shunting the signal input by the input end and then outputting the signal by a first output end and a second output end; the input end of the power voltage detection unit 102 is electrically connected with the first output end of the power distribution unit 101, and the power voltage detection unit 102 is used for detecting the voltage of the coupling signal; the input end of the frequency divider unit 103 is electrically connected with the second output end of the power distribution unit 102, and the frequency divider unit 103 is used for dividing the frequency of the coupling signal and outputting the coupled signal through the output end of the frequency divider unit 103; and the processing unit 104, the processing unit 104 is electrically connected with the output end of the power voltage detection unit 102 and the output end of the frequency divider unit 103, and the processing unit 104 is used for calculating the frequency of the coupling signal according to the output signal of the frequency divider unit 103 and calculating the power of the coupling signal according to the frequency of the coupling signal and the voltage of the coupling signal.
Specifically, fig. 2 is a graph of a relationship between voltage, frequency and power of an ultra-wideband signal provided by an embodiment of the present invention, and with reference to fig. 1 and fig. 2, in power detection, a power signal generally needs to be converted into a voltage signal to reversely deduce a specific power value of the power signal; however, in the ultra-wideband signal, even if the signals have the same power, when the frequencies of the signals are different, the corresponding voltage values are different, and in the conventional detection, only the voltage of the power signal is detected, and then the power value is reversely deduced according to the voltage, and the error of the detected power value is large because the frequency factor is not considered. In the present application, as shown in fig. 1, the power distribution unit 101 receives a coupling signal from a coupling signal output end of an ultra-wideband radio frequency link, where the coupling signal may be a low-power signal coupled from the ultra-wideband radio frequency link, and then the power distribution unit 101 divides the coupling signal into two paths, which are respectively output by a first output end and a second output end; the power voltage detection unit 102 detects the voltage of the coupling signal and sends the voltage to the processing unit 104; the frequency divider unit 103 divides the frequency of the coupled signal so that the frequency of the finally output signal is within a frequency range that can be processed by the processing unit 104; the processing unit 104 can calculate the frequency of the coupling signal according to the frequency division signal of the frequency divider unit 103 and the frequency division multiple of the frequency divider unit 103; then, the processing unit 104 calculates the power of the coupling signal according to the frequency of the coupling signal and the voltage of the coupling signal, so as to obtain the accurate power of the ultra-wideband signal. In the embodiment, when the power of the ultra-wideband signal is detected, the frequency of the ultra-wideband signal is automatically involved in the calculation of the power, so that the accuracy of the power detection of the ultra-wideband signal can be greatly improved.
The technical scheme of this embodiment, the ultra wide band power detection circuit who adopts includes: the input end of the power distribution unit is used for accessing a coupling signal of the ultra-wideband radio frequency link, and the power distribution unit is used for shunting the signal input by the input end and then outputting the signal by a first output end and a second output end of the power distribution unit; the input end of the power voltage detection unit is electrically connected with the first output end of the power distribution unit, and the power voltage detection unit is used for detecting the voltage of the coupling signal; the input end of the frequency divider unit is electrically connected with the second output end of the power distribution unit, and the frequency divider unit is used for dividing the frequency of the coupling signal and outputting the frequency divided coupling signal from the output end of the frequency divider unit; and the processing unit is electrically connected with the output end of the power voltage detection unit and the output end of the frequency divider unit and is used for calculating the frequency of the coupling signal according to the output signal of the frequency divider unit and calculating the power of the coupling signal according to the frequency of the coupling signal and the voltage of the coupling signal. When the power of the ultra-wideband signal is detected, the frequency of the ultra-wideband signal is automatically involved in the calculation of the power, so that the accuracy of the power detection of the ultra-wideband signal can be greatly improved.
Optionally, with continued reference to fig. 1, the divider unit 103 comprises a cascade of N dividers, N being greater than or equal to 2.
Specifically, the frequency of the ultra-wideband signal is generally large, and if only a first-stage frequency divider is adopted, the frequency division multiple of the frequency divider needs to be large, so that the frequency-divided signal can reach the frequency range that can be processed by the processing unit 104, which has a high requirement on the performance of the frequency divider; therefore, this embodiment may use a plurality of cascaded frequency dividers, and the signal is divided once by one stage of frequency divider, so as to more easily reach the frequency range that the processing unit 104 can process.
Optionally, with continued reference to fig. 1, a first stage frequency divider is electrically connected to the second output terminal of the power distribution unit 101, and a division multiple of an mth stage frequency divider is greater than a division multiple of an M +1 th stage frequency divider; wherein M is more than or equal to 1 and less than or equal to N-1.
Specifically, the frequency division multiple of the frequency divider is a ratio of the frequency of the input signal to the frequency of the output signal, that is, if the frequency of the input signal is f0 and the frequency division multiple is n1, the frequency of the output signal is f0/n1; in this embodiment, the frequency division multiple of the mth-stage frequency divider is set to be greater than the frequency division multiple of the M +1 th-stage frequency divider, that is, n1 is greater than n2 and n2 is greater than nm in fig. 1, so that the coupled signal can be quickly divided into a smaller frequency range for the processing unit 104 to process.
Optionally, with continued reference to fig. 1,N, the division multiples of the frequency dividers are equal, in other words, n1 is equal to n2 and equal to nm, and thus, the type selection of the frequency dividers can be simpler, which is beneficial to reducing the overall cost of the ultra-wideband power detection circuit.
Optionally, with continued reference to fig. 1, the processing unit 104 is a micro control unit MCU. The micro control unit MCU has the advantages of low cost, high working stability and the like, and can further reduce the cost of the ultra-wideband power detection circuit. In other embodiments, the processing unit 104 may also be a single chip or an FPGA.
Optionally, fig. 3 is a schematic circuit structure diagram of another ultra wide band power detection circuit provided by an embodiment of the present invention, referring to fig. 3, the ultra wide band power detection circuit further includes: and the upper computer 105, wherein the upper computer 105 is in communication connection with the processing unit 104.
Specifically, the upper computer 105 can communicate with the processing unit 104, for example, the upper computer 105 can display the power calculated by the processing unit 104; the upper computer 105 can also perform human-computer interaction, and perform control such as input of instructions to the processing unit 104.
Optionally, fig. 4 is a schematic circuit structure diagram of another ultra wide band power detection circuit provided by an embodiment of the present invention, referring to fig. 4, the ultra wide band power detection circuit further includes: and a power automatic control unit 106, wherein the power automatic control unit 106 is configured to control the output power of the ultra-wideband radio frequency link to be within a preset range according to the control signal of the processing unit 104.
Specifically, when the processing unit detects that the coupling signal power of the ultra-wideband radio frequency link is large, it indicates that the output power of the ultra-wideband radio frequency link is large, and if the output power is not limited, a device in the radio frequency link or a device connected with the radio frequency link may be damaged; therefore, when the processing unit detects that the power of the coupling signal is large, a control signal (for example, a control voltage) can be output, so as to control the output power of the power automatic control unit 106, the power automatic control unit 106 is cascaded to the ultra-wideband radio frequency link, as shown IN fig. 5, fig. 5 is a schematic circuit structure diagram of an ultra-wideband power detection system provided by an embodiment of the present invention, the ultra-wideband radio frequency link 20 includes an input end IN1, an output end OUT1, a plurality of ultra-wideband radio frequency devices 201 and an ultra-wideband signal coupling device 202, and the ultra-wideband signal coupling device 202 is used for coupling OUT a coupling signal with small power; the power automatic control unit 106 may be cascaded between any two stages of ultra-wideband radio frequency devices 201, a control end of the power automatic control unit 106 is electrically connected with the processing unit 104, an input end and an output end are respectively electrically connected with the corresponding ultra-wideband radio frequency devices 201, and the output power of the ultra-wideband radio frequency link is pulled back to a normal power range through the control of the control signal.
Optionally, fig. 6 is a schematic circuit structure diagram of an automatic power control unit provided in an embodiment of the present invention, referring to fig. 6, the automatic power control unit includes: input terminal IN2, output terminal OUT2, control terminal V ALC The first capacitor C1, the second capacitor C2, the third capacitor C3, the first resistor R1, the second resistor R2, the third resistor R3, the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4; a first end of the first capacitor C1 is used as an input end IN2 of the power automatic control unit, and a second end of the first capacitor C1 is electrically connected with a cathode of the first diode D1; the first end of the first resistor R1 is electrically connected with the second end of the first capacitor C1, and the second end of the first resistor R1Two ends are grounded; the cathode of the second diode D2 is electrically connected to the anode of the first diode D1; a first end of the second resistor R2 is electrically connected to an anode of the second diode D2, a first end of the third resistor R3 is electrically connected to a second end of the second resistor R2, and a second end of the third resistor R3 is used as a control end V of the power automatic control unit ALC A first end of the second capacitor C2 is electrically connected with a second end of the second resistor R2, and a second end of the second capacitor C2 is grounded; the anode of the third diode D3 is electrically connected to the anode of the second diode D2, and the anode of the fourth diode D4 is electrically connected to the cathode of the third diode D3; a first end of the fourth resistor R4 is electrically connected to a cathode of the fourth diode D4, and a second end of the fourth resistor R4 is grounded; a first end of the third capacitor C3 is electrically connected to a cathode of the fourth diode D4, and a second end of the third capacitor C3 serves as an output end OUT2 of the power automatic control unit.
Specifically, the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are all PIN diodes; a preset power value W0 may be set inside the processing unit 104, when it is detected that the output power exceeds the preset power value, an error between the two (an error in voltage) is converted into a control voltage after being subjected to differential operation and amplification, and the processing unit 104 sends the control voltage to the automatic power control unit 106, so that the output power is pulled back to a cell of the preset power value, thereby implementing an accurate power control function. In the power automatic control unit, a first capacitor C1 and a first resistor R1 are used as a radio frequency detection module, four diodes are used as analog attenuation modules to attenuate power signals, and finally, radio frequency signals are output to the next stage through a radio frequency transmitting unit consisting of a third capacitor C3 and a fourth resistor R4.
The embodiment of the utility model also provides an ultra wide band power detection system, which comprises the ultra wide band power detection circuit and the ultra wide band radio frequency link provided by any embodiment of the utility model; and the coupling signal output end of the ultra-wideband radio frequency link is electrically connected with the input end of the power frequency dividing unit. Because of the utility model discloses ultra wide band power detecting system that the embodiment provided includes the utility model discloses the ultra wide band power detection circuit that arbitrary embodiment provided, therefore also have the same beneficial effect, no longer give unnecessary details here.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. An ultra-wideband power detection circuit, comprising:
the input end of the power distribution unit is used for accessing a coupling signal of an ultra-wideband radio frequency link, and the power distribution unit is used for shunting the signal input by the input end and then outputting the signal by a first output end and a second output end of the power distribution unit;
the input end of the power voltage detection unit is electrically connected with the first output end of the power distribution unit, and the power voltage detection unit is used for detecting the voltage of the coupling signal;
the input end of the frequency divider unit is electrically connected with the second output end of the power distribution unit, and the frequency divider unit is used for dividing the frequency of the coupling signal and outputting the frequency divided coupling signal by the output end of the frequency divider unit;
and the processing unit is electrically connected with the output end of the power voltage detection unit and the output end of the frequency divider unit, and is used for calculating the frequency of the coupling signal according to the output signal of the frequency divider unit and calculating the power of the coupling signal according to the frequency of the coupling signal and the voltage of the coupling signal.
2. The ultra-wideband power detection circuit of claim 1, wherein the frequency divider unit comprises a cascade of N frequency dividers; n is greater than or equal to 2.
3. The ultra-wideband power detection circuit of claim 2, wherein a first stage of the frequency divider is electrically connected to the second output of the power distribution unit, and a frequency division multiple of an mth stage of the frequency divider is greater than a frequency division multiple of an M +1 th stage of the frequency divider; wherein M is more than or equal to 1 and less than or equal to N-1.
4. The ultra-wideband power detection circuit of claim 2, wherein the division multiples of the N dividers are equal.
5. The ultra-wideband power detection circuit of claim 1, wherein the processing unit is a micro-control unit.
6. The ultra-wideband power detection circuit of claim 1, further comprising:
and the upper computer is in communication connection with the processing unit.
7. The ultra-wideband power detection circuit of claim 1, further comprising: the power automatic control unit is configured to control the output power of the ultra-wideband radio frequency link to be within a preset range according to the control signal of the processing unit.
8. The ultra-wideband power detection circuit of claim 7, wherein the power automation unit comprises: the circuit comprises an input end, an output end, a control end, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, a second diode, a third diode and a fourth diode;
a first end of the first capacitor is used as an input end of the automatic power control unit, and a second end of the first capacitor is electrically connected with a cathode of the first diode;
the first end of the first resistor is electrically connected with the second end of the first capacitor, and the second end of the first resistor is grounded;
the cathode of the second diode is electrically connected with the anode of the first diode;
a first end of the second resistor is electrically connected with an anode of the second diode, a first end of the third resistor is electrically connected with a second end of the second resistor, a second end of the third resistor is used as a control end of the automatic power control unit, a first end of the second capacitor is electrically connected with a second end of the second resistor, and a second end of the second capacitor is grounded;
the anode of the third diode is electrically connected with the anode of the second diode, and the anode of the fourth diode is electrically connected with the cathode of the third diode;
a first end of the fourth resistor is electrically connected with a cathode of the fourth diode, and a second end of the fourth resistor is grounded; and the first end of the third capacitor is electrically connected with the cathode of the fourth diode, and the second end of the third capacitor is used as the output end of the automatic power control unit.
9. The ultra-wideband power detection circuit of claim 8, wherein the first diode, the second diode, the third diode, and the fourth diode are PIN tubes.
10. An ultra-wideband power detection system, characterized in that it comprises an ultra-wideband power detection circuit and an ultra-wideband radio frequency link according to any of claims 1-9; and the coupling signal output end of the ultra-wideband radio frequency link is electrically connected with the input end of the power distribution unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221657581.2U CN217766603U (en) | 2022-06-28 | 2022-06-28 | Ultra-wideband power detection circuit and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221657581.2U CN217766603U (en) | 2022-06-28 | 2022-06-28 | Ultra-wideband power detection circuit and system |
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| CN217766603U true CN217766603U (en) | 2022-11-08 |
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| CN202221657581.2U Active CN217766603U (en) | 2022-06-28 | 2022-06-28 | Ultra-wideband power detection circuit and system |
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