Trainable transceiver including a dynamically tunable antenna

Details Trainable transceiver including a dynamically tunable antenna Trainable transceiver including a dynamically tunable antenna

1995-05-19

1997-12-16

Holloway, III, Edwin C.

Communications: electrical

Continuously variable indicating

With meter reading

34082569, 34082572, 4551512, 341176, G05B 1902

Patent

active

056990545

ABSTRACT:
A trainable transceiver for learning and transmitting an activation signal that includes an RF carrier frequency modulated with a code for remotely actuating a device, such as a garage door opener. The trainable transceiver preferably includes a controller, a signal generator, and a dynamically tunable antenna having a variable impedance that may be selectively controlled in accordance with a carrier frequency of a received or transmitted activation signal.

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