Wristband with loop antenna

Details Wristband with loop antenna Wristband with loop antenna

1989-10-23

1990-12-11

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455274, 455351, 34082544, 343718, 368 10, 368282, H04B 118

Patent

active

049776142

ABSTRACT:
An apparatus for adjusting the length of a single segment loop antenna while automatically compensating for the antenna so as to maintain a substantially constant resonant frequency thereof.

REFERENCES:
patent: 1326934 (1920-11-01), Hulburd
patent: 3032651 (1962-05-01), Stahli et al.
patent: 3478344 (1969-11-01), Schwitzgebel et al.
patent: 3983483 (1976-09-01), Pando
patent: 4006587 (1977-02-01), Huguenin
patent: 4178751 (1979-12-01), Liautaud
patent: 4419770 (1983-12-01), Yagi et al.
patent: 4625212 (1986-11-01), Oda et al.
patent: 4713808 (1987-02-01), Caskill et al.
patent: 4754285 (1988-06-01), Robitaille
patent: 4769656 (1988-09-01), Dickey
patent: 4817196 (1989-03-01), MacNak et al.
patent: 4873527 (1989-10-01), Tan

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