Electrically small antenna

Details Electrically small antenna Electrically small antenna

2008-04-30

2010-11-09

Le, HoangAnh T (Department: 2821)

Communications: radio wave antennas

Antennas

Waterborne

C343S709000

Reexamination Certificate

active

07830318

ABSTRACT:
An antenna system, with a loop antenna and a loop current, is provided for transmitting an electromagnetic signal through a medium. The loop antenna has an E field transducer that generates an E field, and an H field transducer that generates an H field. The E and H fields are orthogonal in space and have at least one of a magnitude and phase relationship that is matched to an intrinsic impedance of a medium to generate a propagating wave. In an insulating medium the loop current lags an E field plate voltage by 90° to produce in phase E and H fields. In a conductive medium current is applied to the loop with a 135° phase lag with respect to a voltage across the E field plates. The H field is generated by the current component and leads current by 90°.

REFERENCES:
patent: 3152321 (1964-10-01), Peltzer
patent: 6717283 (2004-04-01), Skinner et al.
patent: 7647979 (2010-01-01), Shipley et al.

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