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Pulse power amplifier circuit efficiency measurement method suitable for different duty ratios

A power amplification circuit and pulse power technology, which is applied in electronic circuit testing, radio frequency circuit testing, etc., can solve problems such as narrow space, inability to place current probes, and inability to calculate intra-pulse efficiency, achieving strong universality and high intra-pulse efficiency. simple effect

Active Publication Date: 2019-01-08
NORTHWEST INST OF NUCLEAR TECH
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AI Technical Summary

Problems solved by technology

In circuits such as radar transceiver components, the pulse power supply is often composed of a power supply, a secondary power supply and a pulse modulation circuit. The secondary power supply, pulse modulation circuit and power amplifier circuit are integrated and installed inside the component. dct It is the instantaneous current between the pulse modulation circuit and the amplifying circuit. The power supply wires here are mostly planar circuits such as microstrip lines, and because of the small space in the component, it is impossible to place the current probe, so that the I dct Unable to test and therefore unable to calculate intrapulse efficiency

Method used

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  • Pulse power amplifier circuit efficiency measurement method suitable for different duty ratios
  • Pulse power amplifier circuit efficiency measurement method suitable for different duty ratios
  • Pulse power amplifier circuit efficiency measurement method suitable for different duty ratios

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Embodiment Construction

[0066] see Figure 1-4 , the pulse power amplifying circuit efficiency measurement method applicable to different duty ratios provided by the present invention comprises the following steps:

[0067] Step 1: According to the power supply and microwave pulse nesting method, decompose the total power of the power supply, and establish a new efficiency calculation formula based on the decomposed parameters; specifically include the following situations:

[0068] 1.1 When the microwave pulses of the power supply are not nested, the total power of the power supply is decomposed into the static power power P outside the pulse dc0 , The instantaneous power of the power supply within the microwave pulse time P dc1 , the new efficiency calculation formula established is:

[0069]

[0070] In the formula, P mw Intrapulse output power of the microwave pulse of the power amplifier circuit in the circuit to be tested;

[0071] 1.2 When the microwave pulses of the power supply are st...

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Abstract

In order to solve the technical problem of pulse power amplifier circuit efficiency measurement, the invention provides a pulse power amplifier circuit efficiency measurement method suitable for different duty ratios. Based on a constructed average efficiency measurement system, the average efficiency and in-pulse efficiency at any duty ratio under a power level can be deduced and calculated by measuring the average efficiency eta' of 1-3 groups of power amplifier circuits with different duty ratios under the power level. The pulse power amplifier circuit efficiency measurement method has theadvantages of simple test, high feasibility and high universality.

Description

technical field [0001] The invention belongs to the technical field of microwave measurement, and in particular relates to a method for measuring the efficiency of a pulse power amplifying circuit applicable to different duty ratios. Background technique [0002] Microwave transmitters are an important part of microwave systems and are widely used in civil fields such as wireless communications, Internet of Things, remote sensing, medical electronics, and measurement and control. The power amplifier circuit is a key component of the microwave transmitter, generally at the end of the transmitter, and its function is to amplify the microwave signal output by the previous stage to the required power level. The pulse system microwave system is widely used. The pulse system radar is the mainstream of modern radar. The time-sharing electronic countermeasure system and burst communication system are also pulse system, which requires the power amplifier circuit to work in pulse mode...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/28
CPCG01R31/2822
Inventor 方文饶黄文华付超邵浩李平章勇华李佳伟王璐璐汪海波
Owner NORTHWEST INST OF NUCLEAR TECH