Apparatus and method for reducing the temperature sensitivity of

Details Apparatus and method for reducing the temperature sensitivity of Apparatus and method for reducing the temperature sensitivity of

1999-03-17

2000-12-12

Wong, Don

Communications: radio wave antennas

Antennas

Including magnetic material

343778, 343700MS, H01Q 100

Patent

active

061605247

ABSTRACT:
To control the temperature sensitivity of a ferroelectric microwave device, a microwave waveguide in the device is loaded with a modified ferroelecc material of reduced grain size less than 100 nm, preferably about 50 nm. The electrical properties of this material are less sensitive to temperature change. Thus, when a dc bias voltage is applied across the ferroelectric to tune the dielectric constant, changes in temperature will have a minimal effect on the desired tuning of the device.

REFERENCES:
patent: 5557286 (1996-09-01), Varadan et al.
patent: 5731220 (1998-03-01), Tsu et al.

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