RF-mems switch

Details RF-mems switch RF-mems switch

2006-10-24

2006-10-24

Enad, Elvin G. (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

C200S181000

Reexamination Certificate

active

07126447

ABSTRACT:
An RF-MEMS switch includes a plurality of movable electrodes disposed with a space provided therebetween in the direction of RF signal conduction of an RF signal-conducting unit which is provided above the RF signal-conducting unit. A movable electrode displacing unit for displacing all the movable electrodes at the same time in the same direction towards or away from the RF signal-conducting unit is provided. The electrical length of the RF signal-conducting unit sandwiched between the movable electrodes is set such that the amplitude of a combined signal including signals reflected in positions of the RF signal-conducting unit facing the movable electrodes is less than the amplitude of each of reflected signals reflected in positions of the RE signal-conducting unit facing the movable electrodes when the movable electrodes are displaced away from the RF signal-conducting unit and signal conduction of the RF signal-conducting unit is switched on.

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Chienliu Chang et al.; “Innovative Micromachined Microwaved Switch with Very Low Insertion Loss”; Sensors and Actuators 79 (2000); pp. 71-75.
First Office Action issued in the corresponding Chinese Application No. 200310122590.7 dated Aug. 19, 2005.
Jeremy B. Muldavin et al.; “High-Isolation CPW MEMS Shunt Switches—Part 1: Modeling”; IEEE Transactions on Microwave Theory and Techniques; vol. 48, No. 6, Jun. 2000, pp. 1045-1052.

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