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Title: Digitally controlled distributed phase shifter

A digitally controlled distributed phase shifter is comprised of N phase shifters. Digital control is achieved by using N binary length-weighted electrodes located on the top surface of a waveguide. A control terminal is attached to each electrode thereby allowing the application of a control signal. The control signal is either one or two discrete bias voltages. The application of the discrete bias voltages changes the modal index of a portion of the waveguide that corresponds to a length of the electrode to which the bias voltage is applied, thereby causing the phase to change through the underlying portion of the waveguide. The digitally controlled distributed phase shift network has a total phase shift comprised of the sum of the individual phase shifters.
Inventors:
; ;
Issue Date:
OSTI Identifier:
6229616
Assignee:
Dept. of Energy, Washington, DC (United States) SNL; EDB-93-122232
Patent Number(s):
US 5237629; A
Application Number:
PPN: US 7-854024
Contract Number:
AC04-76DP00789
Resource Relation:
Patent File Date: 19 Mar 1992
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; WAVEGUIDES; COMPUTERIZED CONTROL SYSTEMS; PHASE SHIFT; ELECTRODES; MODE CONTROL; CONTROL; CONTROL SYSTEMS; ON-LINE CONTROL SYSTEMS; ON-LINE SYSTEMS; 426000* - Engineering- Components, Electron Devices & Circuits- (1990-)