Miniature antenna with separate sequentially wound windings

Details Miniature antenna with separate sequentially wound windings Miniature antenna with separate sequentially wound windings

1985-08-07

1987-12-08

Sikes, William L.

Communications: radio wave antennas

Antennas

Including magnetic material

343787, 343895, H01Q 708, H01Q 136

Patent

active

047121122

ABSTRACT:
The invention is a miniature antenna useful for portable radios, pocket pager receivers, etc. A plurality of sequentially wound windings is located on a ferrite core, each winding being connected in series with a capacitor. The resulting series circuits are connected in parallel with each other. Preferably the resonant frequency of each series circuit is approximately 80% to 90% of a receive frequency. An external tuning capacitance resonates with the net inductance of the antenna at the receive frequency. The antenna exhibits low hand effect while maintaining output EMF.

REFERENCES:
patent: 2932027 (1955-03-01), Crowley
patent: 3946397 (1976-03-01), Irwin
patent: 4101899 (1978-07-01), Jones, Jr. et al.

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