FM wireless transmitter

Details FM wireless transmitter FM wireless transmitter

1984-07-23

1986-09-16

Ng, Jin F.

Telecommunications

Transmitter

Including tuning

455128, 455129, 343702, 334 80, H04B 134, H04B 103, H04B 104

Patent

active

046126686

ABSTRACT:
A FM wireless headphone transmitter which uses a novel technique of varying the transmitted frequency. Instead of the traditional methods of using a variably meshing multi-plate capacitor, the invention uses a printed circuit inductance with a tuning plate attached permanently to the inside of the case so that frequencies are changes by changing cases. An alternative embodiment uses interchangeable tuning plates attached to the inside of the case by hook and loop pile type fastener material. The printed circuit inductance also serves as a transmitting antenna.

REFERENCES:
patent: 2085223 (1937-06-01), Kolster
patent: 2611094 (1952-09-01), Rex
patent: 3105938 (1963-10-01), Onnigian et al.

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