CN106353591B - Average burst power measuring circuit - Google Patents
Average burst power measuring circuit Download PDFInfo
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- CN106353591B CN106353591B CN201610918216.5A CN201610918216A CN106353591B CN 106353591 B CN106353591 B CN 106353591B CN 201610918216 A CN201610918216 A CN 201610918216A CN 106353591 B CN106353591 B CN 106353591B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
Abstract
The invention discloses an average burst power measuring circuit which utilizes a digital-to-analog converter and a voltage comparator stage peripheral circuit to measure the average burst power and CCDF value of signals.
Description
Technical Field
The invention relates to the field of radio frequency power meters, in particular to an average burst power measuring circuit.
Background
Power reflectometers are commonly used to measure the power of Radio Frequency (RF) or microwave frequency (MW) signals. Typical power reflectometers use a power detector or transducer to convert RF or MW power into an easily measurable electrical parameter. Power reflectometers also have application in many types of RF and MW systems. In practical applications, it is necessary to measure the average burst power and CCDF value of the signal, and thus a specific measurement circuit is required for measurement. The existing measuring circuit is complex, and because the circuit structure is complex, the measuring result error is larger, and the measuring precision is lower.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the peak average burst power measuring circuit with simple circuit structure, small measuring result error and high measuring precision.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the average burst power measurement circuit is characterized by comprising a digital-to-analog converter chip DAC8143, wherein a chip pin 1 is connected with a first resistor R111, a first capacitor C90 and an operational amplifier N11B input "-" end, the other end of the first resistor R111 is connected with a second resistor R112, and the other end of the second resistor R112 is connected with a-5V voltage output interface; the operational amplifier input "+" is grounded, the operational amplifier output end is connected with the other end of the first capacitor C90, the third resistor R92 and the chip pin 16, the other end of the third resistor R92 is connected with the second capacitor C91 and the voltage comparator N14 pin 2, an external data processing signal output interface, the other end of the second capacitor C91 is grounded, the comparator N14 pin 3 is connected with an external peak signal output interface, the comparator N14 pin 1 is grounded, the comparator N14 pin 4 is connected with the third capacitor C92 and the 5V voltage output interface, the other end of the third capacitor C92 is grounded, the comparator N14 pin 5 is connected with the comparator N14 pin 6 through the fourth capacitor C93, the comparator N14 pin 7 is connected with the positive electrode of a diode V20, the fourth resistor R93, the fifth capacitor C94 and the sixth capacitor C95, the other end of the sixth capacitor C94 is grounded, the negative electrode of the diode V20 is connected with the fifth resistor R94 and the sixth resistor LD 94, the other end of the fifth resistor R94 is connected with the chip pin 5, the other end of the chip pin is connected with the chip pin 9 and the chip pin 9, the chip pin is connected with the chip pin 9 and the chip pin 16 through the fourth resistor C92 and the other end is connected with the chip pin 9.
Compared with the prior art, the invention has the beneficial effects that
Compared with the prior art, the average burst power measuring circuit has the advantages of simple structure, small error of measuring results and high measuring precision.
Drawings
Fig. 1 is a circuit diagram showing the average burst power measurement of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1:
fig. 1 shows an average burst power measurement circuit diagram of the present invention, which includes a digital-to-analog converter chip DAC8143, where the chip pin 1 is connected to a first resistor R111, a first capacitor C90, and an op-amp N11B input "-" terminal, the other end of the first resistor R111 is connected to a second resistor R112, and the other end of the second resistor R112 is connected to a-5V voltage output interface; the operational amplifier input "+" is grounded, the operational amplifier output end is connected with the other end of the first capacitor C90, the third resistor R92 and the chip pin 16, the other end of the third resistor R92 is connected with the second capacitor C91 and the voltage comparator N14 pin 2, an external data processing signal output interface, the other end of the second capacitor C91 is grounded, the comparator N14 pin 3 is connected with an external peak signal output interface, the comparator N14 pin 1 is grounded, the comparator N14 pin 4 is connected with the third capacitor C92 and the 5V voltage output interface, the other end of the third capacitor C92 is grounded, the comparator N14 pin 5 is connected with the comparator N14 pin 6 through the fourth capacitor C93, the comparator N14 pin 7 is connected with the positive electrode of a diode V20, the fourth resistor R93, the fifth capacitor C94 and the sixth capacitor C95, the other end of the sixth capacitor C94 is grounded, the negative electrode of the diode V20 is connected with the fifth resistor R94 and the sixth resistor LD 94, the other end of the fifth resistor R94 is connected with the chip pin 5, the other end of the chip pin is connected with the chip pin 9 and the chip pin 9, the chip pin is connected with the chip pin 9 and the chip pin 16 through the fourth resistor C92 and the other end is connected with the chip pin 9.
In one embodiment, the DAC8143 converts the LD signal from the external data processing board into a voltage, and outputs the voltage to the 2 pin of the voltage comparator LT1011 as a reference voltage. The 3 pin of the voltage comparator LT1011 is a signal output from the peak circuit. When the voltage of the 3 feet is smaller than the reference voltage, a high level is output, and when the voltage is larger than the reference voltage, a low level is output, and then the voltage is converted into a direct current level through an integrating circuit of V20, R94 and R95, so that the duty ratio information of a detected signal can be obtained, and the average burst power and the CCDF value are calculated.
Compared with the prior art, the average burst power measuring circuit has the advantages of simple structure, small error of measuring results and high measuring precision.
The present invention is not limited to the above-described embodiments, but various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the claims of the present application.
Claims (1)
1. The average burst power measurement circuit is characterized by comprising a digital-to-analog converter chip DAC8143, wherein a chip pin 1 is connected with a first resistor (R111), a first capacitor (C90) and an operational amplifier N11B input "-" end, the other end of the first resistor (R111) is connected with a second resistor (R112), and the other end of the second resistor (R112) is connected with a-5V voltage output interface; the operational amplifier input "+" is grounded, the operational amplifier output end is connected with the other end of the first capacitor (C90), a third resistor (R92) and the chip pin 16, the other end of the third resistor (R92) is connected with a second capacitor (C91) and a voltage comparator LT1011 (N14) pin 2, an external data processing signal output interface is connected with the other end of the second capacitor (C91) and grounded, the pin 3 of the comparator (N14) is connected with an external peak signal output interface, the pin 1 of the comparator (N14) is grounded, the pin 4 of the comparator (N14) is connected with a third capacitor (C92), a-5V voltage output interface, the other end of the third capacitor (C92) is grounded, the pin 5 of the comparator (N14) is connected with the pin 6 of the comparator (N14) through a fourth capacitor (C93), the pin 7 of the comparator (N14) is connected with a diode (V20) positive electrode, a fourth resistor (R93), a fifth capacitor (C94), a sixth capacitor (C95), the other end of the comparator (N14) is connected with the chip pin 4, the other end of the comparator (N14) is connected with the chip, the other end of the third capacitor (C92), the other end of the comparator (C92) is connected with the chip pin 5, the other end of the chip is connected with the chip (C94, the other end of the chip is connected with the fourth capacitor (C94), the other end of the resistor (C94) is connected with the chip, the other end of the chip (R94) and the other end of the chip is connected with the chip, and the chip, the pin 9 is connected with an LD signal, the chip pin 14 is connected with a +5V voltage output interface, the chip pin 10 and the pin 13 are connected with the +5V voltage output interface through a seventh resistor (R90), and the chip pin 9 is also connected with the +5V voltage output interface through an eighth resistor (R91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918216.5A CN106353591B (en) | 2016-10-21 | 2016-10-21 | Average burst power measuring circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918216.5A CN106353591B (en) | 2016-10-21 | 2016-10-21 | Average burst power measuring circuit |
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| CN106353591A CN106353591A (en) | 2017-01-25 |
| CN106353591B true CN106353591B (en) | 2023-05-16 |
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Citations (15)
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| JPH04192636A (en) * | 1990-11-22 | 1992-07-10 | Nec Corp | Transmission burst power control circuit |
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| CN103915755A (en) * | 2014-02-28 | 2014-07-09 | 嘉兴禾润电子科技有限公司 | Automatic laser average optical power control system for burst mode |
| CN203722052U (en) * | 2014-02-28 | 2014-07-16 | 嘉兴禾润电子科技有限公司 | Laser automatic average optical power control system for emergency mode |
| CN204536440U (en) * | 2015-01-28 | 2015-08-05 | 北京信维科技股份有限公司 | A kind of wireless frequency spectrum through type digital radio frequency power meter |
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| CN106353591A (en) | 2017-01-25 |
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