Linear control system of broadband solid-state power amplifier and control method thereof

A solid-state power, linear control technology, used in power amplifiers, improving amplifiers to improve efficiency, etc., can solve the problem that the linear interval is small and is not suitable for fine linear work control, amplifier linearity, power gain flatness is difficult to meet the requirements, practical control Insufficient sensitivity and effectiveness to achieve the effect of no manual intervention, easy implementation, and reduced operating costs

Pending Publication Date: 2021-06-18
中国船舶重工集团公司第七二三研究所
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AI Technical Summary

Problems solved by technology

[0006] The current linear control method for solid-state power amplifiers is mainly radio frequency input power attenuation control, which is limited by GaN power chips and broadband power dividers. This method is generally used in narrowband (limited to a certain frequency range). Even when ultra-wideband (above 3 octaves), the lin

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  • Linear control system of broadband solid-state power amplifier and control method thereof
  • Linear control system of broadband solid-state power amplifier and control method thereof
  • Linear control system of broadband solid-state power amplifier and control method thereof

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Embodiment Construction

[0035] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0036] Such as figure 1 As shown, a linear control system of a broadband solid-state power amplifier includes a control unit 1, a front-stage power amplifier unit 2, and a final-stage power amplifier unit 3; The first-stage power amplifier unit 2 and the final-stage power amplifier unit 3 are respectively connected;

[0037] The control unit 1 collects the output power and state quantity of the final power amplifier unit 3 in real time through the MCU microprocessor, receives the output power command issued by the host computer according to the disguised parameters, and makes a difference between the output power given by the command and the output power actually collected Perform PID calculation to obtain the control state quantity, perform radio frequency attenuation control on the front-stage power amplifier unit 2, and perform drain voltage modulation...

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Abstract

The invention discloses a linear control system of a broadband solid-state power amplifier and a control method thereof, the system comprises a control unit, a preceding-stage power amplifier unit and a last-stage power amplifier unit, and is characterized in that the preceding-stage power amplifier unit and the last-stage power amplifier unit are sequentially connected in series, and the control unit is respectively connected with the preceding-stage power amplifier unit and the last-stage power amplifier unit. According to the invention, combined control of radio frequency input power attenuation control and chip drain electrode voltage regulation is adopted, linear multi-gear control of transmitting power in an ultra-wideband range is realized, and the ultra-wideband linear multi-gear control circuit has the advantages of linearly adjustable ultra-wideband power, automatic and rapid power regulation, high control precision, simple control implementation, low operation cost and the like.

Description

technical field [0001] The invention belongs to the technical field of power amplifier control, and specifically relates to a linear control system and a control method of a broadband solid-state power amplifier. Background technique [0002] The measurement equipment of electromagnetic scattering characteristics of non-cooperative military targets is the key equipment to evaluate the stealth effect of real military targets, especially stealth targets. In the measurement work, the measurement of the radar cross section (RCS) of the weapon equipment is the main means to evaluate its electromagnetic scattering characteristics. [0003] Military targets such as airplanes and ships are generally equipped with electronic reconnaissance and countermeasure equipment, and the radiation signal characteristics of the measurement equipment are similar to those of fire control radars. This type of radiation characteristics and high SNR (meaning greater power) are easily detected by mili...

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Application Information

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IPC IPC(8): H03F1/02H03F3/20
CPCH03F1/02H03F3/20
Inventor 龚健路宇张彦毕磊
Owner 中国船舶重工集团公司第七二三研究所
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