SHF ATTENUATOR WITH CONTINUOUS CONTROL Russian patent published in 2010 - IPC H01P1/22 

FIELD: electricity.

SUBSTANCE: SHF attenuator with continuous control contains two transmission lines with equal wave impedances. One line is intended for SHF signal input and the other line - for SHF signal output. The attenuator also contains three field transistors with Schottky barrier junction. Source of one field transistors with Schottky barrier junction is grounded and its gate is connected with constant control voltage source. The gate of one field transistors with Schottky barrier junction is connected with input transmission line and its source is connected with drain of the second field transistor with Schottky barrier junction. Their drains are connected with each other and with output transmission line; source of the second field transistor with Schottky barrier junction is connected with drain of the third field transistor with Schottky barrier junction the source of which is grounded.

EFFECT: operation bandwidth expansion, obtaining linear variation of SHF signal attenuation depending on constant control voltage, lowering initial SHF losses.

4 dwg, 1 ex