Strip linear large power microwave switch and producing method thereof

Abstract

The invention discloses a stripline high-power microwave switch and a manufacturing method thereof. The switch adopts a stripline structure as a microwave signal transmission carrier, and sets several levels of back-to-back columns on the inner conductor core line, and the columns are mounted on the upper, The microwave board on the lower cover plate is electrically connected, and the PIN diode on the microwave board is controlled to be turned on and off through the driving circuit, so as to realize the turning on and off of the microwave signal. Since the present invention does not use a DC blocking capacitor on the core wire, the insertion loss of the switch is reduced and the load carrying power of the switch is improved. The PIN diode is not directly connected between the core wire and the cover plate, and is welded to the microstrip line of the microwave board. In addition, the microstrip line adopts small characteristic impedance transformation to reduce the requirements for the withstand voltage of the PIN diode, and multiple PIN diodes can be welded in parallel on the microwave line, which improves the carrying power and reliability of the PIN diode. The device has broad application prospects in mobile communication, avionics, electronic countermeasures, radar, medical treatment and other fields.

Description

technical field [0001] The invention relates to high-power microwave device technology (High Power MicrowaveEquipments), in particular to a strip-line high-power PIN diode high-power microwave switch. Background technique [0002] Microstrip lines are often used as the transmission carrier for microwave switches, and bare-core chips are often used for diodes. Generally, there are DC blocking capacitors on the transmission main line, so the power carried by the device is very limited, and the insertion loss is relatively large. It is relatively harsh, and the high-power waveguide microwave switch can withstand relatively high power, but when the frequency band is relatively low (below the C-band), the volume and weight are relatively large, the welding process requires high requirements, and the reliability is difficult to guarantee. Contents of the invention [0003] In order to solve the problems in the prior art, the object of the present invention is to provide a stripl...

AI Technical Summary

Problems solved by technology

[0002] Microstrip lines are often used as the transmission carrier for microwave switches, and bare-core chips are often used for diodes. Generally, there are DC blocking capacitors on the transmission main line, so the power carried by the device is very limited, and the insertion loss is relatively large. It is relatively harsh, and the high-power waveguide microwave switch can withstand relatively high power, but when the frequency band is relatively low (below the C-band), the volume and weight are relatively large, the welding process requires high requirements, and the reliability is difficult to guarantee.

Images