Retractable radiotelephone antennas and associated radiotelephon

Details Retractable radiotelephone antennas and associated radiotelephon Retractable radiotelephone antennas and associated radiotelephon

1996-12-30

1999-05-25

Wong, Don

Communications: radio wave antennas

Antennas

With radio cabinet

343895, 343901, H01Q 124, H01Q 136

Patent

active

059073063

ABSTRACT:
A multi-piece retractable radiotelephone antenna and associated communication method is employed to provide improved signal quality. The multi-piece antenna includes conductive windings, such as helical quadrafillar windings, disposed separately on two slidably cooperating substrate members. The antenna is mechanically extended to a deploy position and the separate windings are electrically connected thereby doubling the effective electrical length of the antenna.

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Clark, R.A. et al., Series and Parallel-fed Linearly Polarized Helical Aerials, The Radio and Electronic Engineer, pp. 67-71 (Jul. 1964).

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