Rotatable antenna and integral, shielded impedance matching netw

Details Rotatable antenna and integral, shielded impedance matching netw Rotatable antenna and integral, shielded impedance matching netw

1995-05-08

1996-11-26

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With coupling network or impedance in the leadin

343702, 343860, 343882, 343900, 343906, H01Q 124, H01Q 150

Patent

active

055790232

ABSTRACT:
A rotatable antenna is disclosed in which a radiator and matching network comprise a contiguous electrically conductive spring wire. The matching network comprises a coil extending generally perpendicular to the radiator. A 50 ohm coaxial cable has its ground conductor electrically connected to an electrically conductive sleeve which overlies the coil while the main conductor of the coaxial cable is tapped to the coil so that the matching network substantially matches the radiator impedance to the transmission line impedance. The matching network is rotatable with respect to a mounting member so that the radiator becomes rotatable about an axis that is generally perpendicular to the radiator.

REFERENCES:
patent: 2514167 (1950-07-01), Scott
patent: 3798654 (1974-03-01), Martino et al.
patent: 5218369 (1993-06-01), Jennings
patent: 5218370 (1993-06-01), Blaese
patent: 5403197 (1995-04-01), Ernst et al.

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