METHOD AND APPARATUS FOR ELECTRICAL CONTROL OF PHASE OF WAVEGUIDE PHASE CHANGER Russian patent published in 2013 - IPC H01P1/18 

FIELD: radio engineering, communication.

SUBSTANCE: transverse electric type electromagnetic wave (TE mode) is transmitted through a section of a rectangular waveguide with varactor diodes; control voltage is applied across the varactor electrodes, said voltage changing the effective waveguide width, thereby controlling the length of the TE mode in the waveguide, such that for a fixed geometrical length of the waveguide section, there is fast control of phase with low insertion losses on passage of the wave. Disclosed is a device having a source of control voltage and a section of a rectangular waveguide, which consists of four conducting (metal) walls which transmit the TE mode in the longitudinal direction, characterised by connection, at least along one of the narrow waveguide walls, of a longitudinal varactor diode insert with capacitance which depends on the applied control voltage, the insert adjoining the wide waveguide walls on microwave current induced by the transmitted TE mode.

EFFECT: low insertion losses of the waveguide phase changer with fast electrical control of phase.

4 cl, 8 dwg