Miniaturized microstrip equalizer based on thin film circuit

Abstract

The invention discloses a miniaturized micro-strip equalizer based on a thin film circuit, which comprises an input transmission line, an output transmission line, a matched transmission line, a first resonance unit, a second resonance unit and a dielectric substrate. The input transmission line and the output transmission line are respectively and horizontally connected with two ports of the matched transmission line to form a main transmission line; as input and output ends of microwave signals, the matched transmission line is bent into an S shape; the first resonance unit and the second resonance unit are composed of thin-film resistors and microstrip open-circuit resonance branches and loaded on the two sides of the matched transmission line, and the microstrip open-circuit resonance branches are bent to be S-shaped. The thin film circuit technology insensitive to temperature change is adopted, the problem that an equalizer cannot work normally after high and low temperature storage and high and low temperature circulation due to a dielectric material and an absorption resistor is solved, and the problems that in the prior art, the size is large, the structure is complex, the reliability is low, and the equalization amount is small are solved.

Description

Technical field [0001] The present invention relates to the field of microwave passive device, and more particularly to a small microstrip equalizer based on a thin film circuit. Background technique [0002] Microwave broadband transceiver components are widely used in electronic confrontation, phased-controlled radar radar, etc., which is a very important performance test indicator in the operating frequency characteristics. In particular, the transmitting front end is often integrated by a multi-stage amplifier, a filter, and other devices. Due to the current process technology and the design capacity limit, the amplitude of the device is difficult to remain exactly entirely in the working frequency band. After integrating through multi-stage microwave devices, the entire transmitting front end in the operating frequency characteristics will inevitably fluctuate, and cannot meet actual engineering needs. In response to this problem, the opposite fluctuation gain equalizer is a...

AI Technical Summary

Problems solved by technology

[0007]Compared with the prior art, the present invention has the following beneficial effects: the present invention adopts a thin-film circuit technology that is not sensitive to temperature changes, and effectively solves the problems of dielectric materials and absorption The problem that the resistance cannot work normally and stably after high and low temperature storage and high and low temperature cycles; the invention will match the bending design of the transmission line and the open circuit resonant stub, while taking into account the distance between the microstrip lines, and the equalizer area is larger than the linear traditional equalizer The device is 60% smaller, and the metal layer of the microstrip line is evenly distributed on the film substrate, which achieves simple structure, small size and area, easy assembly, and improves the reliability of the device and excellent standing wave performance; it can effectively improve the broadband frequency response. Stationary characteristics

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