An electronically controlled transmission-line phase shifter
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An investigation of a microstrip transmission line in which a measure of electronic control over the wave propagation constant can be achieved is presented. The microstrip line is constructed with an adjustable-width upper plate, obtained by placing a DC bias across the p+ and n+ strips in doped silicon. A change in the forward-voltage bias across the silicon strip changes the current amplitude, which in turn affects a change in the conductivity of the silicon. This change in the conductivity of the silicon semiconductor produces a change in the effective width of the microstrip line, thus producing a phase shift in a high-frequency signal propagating in the line. An electronically controlled transmission line (ECTL) has applications as a feed line for a traveling wave-array antenna. 2004 Wiley Periodicals, Inc.
Microwave and Optical Technology Letters
author list (cited authors)
Shin, C., Nevels, R., Strieter, F., & Biard, J. R.
complete list of authors
Shin, Chang-Seok||Nevels, Robert||Strieter, Frederick||Biard, J Robert