Retractable antenna assembly with bottom connector

Details Retractable antenna assembly with bottom connector Retractable antenna assembly with bottom connector

1994-03-07

1995-05-02

Hajec, Donald

Communications: radio wave antennas

Antennas

With radio cabinet

343901, H01Q 124, H01Q 110

Patent

active

054123933

ABSTRACT:
A retractable antenna assembly with a bottom connector (200) allows communication devices that require the use of more than one type of antenna element (114), to easily store the normally used antenna element (114) inside of a transmission line housing (144) which is part of the antenna assembly (200). Once inside of the housing (144), the antenna element (114) is hidden within the transmission line housing that has a 50 ohm impedance at the operating frequency of the communication device (302), thereby operatively decoupling the antenna element (114) from the radio frequency path. Once inside of the housing (144), the antenna element (114) is connected to part of a coaxial connector (112) with the bottom portion (120) of the antenna element (114) connected to the center conductor of the coaxial connector (112), thereby allowing for an external antenna element (308) to be attached to the communication device (302).

REFERENCES:
patent: 2677973 (1954-05-01), Gosline
patent: 4525718 (1985-06-01), Imazeki et al.
patent: 5072230 (1991-12-01), Taniyoshi et al.
patent: 5204687 (1993-04-01), Elliott et al.

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