Transmission line phase shifter with controllable high...

Details Transmission line phase shifter with controllable high... Transmission line phase shifter with controllable high...

2006-04-11

2006-04-11

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

C342S372000, C342S375000

Reexamination Certificate

active

07026892

ABSTRACT:
A transmission line phase shifter ideally suited for use in low-cost, steerable, phased array antennas suitable for use in wireless fidelity (WiFi) and other wireless telecommunication networks, in particular multi-hop ad hoc networks, is disclosed. The transmission line phase shifter includes a wire transmission line, such as a coaxial, stripline, microstrip, or coplanar waveguide (CPW) transmission line. A high-permittivity dielectric element that overlies the signal conductor of the wire transmission line is used to control phase shifting. Phase shifting can be electromechanically controlled by controlling the space between the high-permittivity dielectric element and the signal conductor of the wire transmission line or by electrically controlling the permittivity of the high-permittivity dielectric element.

REFERENCES:
patent: 5406233 (1995-04-01), Shih et al.
patent: 5472935 (1995-12-01), Yandrofski et al.
patent: 5694134 (1997-12-01), Barnes
patent: 6611230 (2003-08-01), Phelan
patent: 6662029 (2003-12-01), Eden et al.

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