Antenna switch

Details Antenna switch Antenna switch

1991-03-22

1992-08-11

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With radio cabinet

343893, H01Q 124

Patent

active

051383292

ABSTRACT:
The invention relates to an antenna switch for radio telephones, which are provided with an extendible external antenna (1) and a built-in internal antenna (2). The antenna switch comprises a microswitch (4) having a switch arm (6) and a press switch (5). The antenna switch accomplishes the switching-on of the microswitch (4), whereupon the signal route is connected with the internal antenna (2). Respectively, when the external antenna (1) is moved in the reverse direction, the signal route is connected with the external antenna (1). The switch arm (6) is in direct contact with the external antenna (1) so that the contact accomplishes the switching-on of the microswitch (4), when the external antenna (1) is in a partly pushed-in position. The switch arm (6) is situated in close vicinity to the lowest part (15) of the external antenna (1) when the external antenna (1) is in its extended extreme position.

REFERENCES:
patent: 3087117 (1963-04-01), Mitchell
patent: 3969728 (1976-07-01), Hodsdon et al.
patent: 4860024 (1989-08-01), Egashira
patent: 4862182 (1989-08-01), Egashira
patent: 4920352 (1990-04-01), Martensson et al.
patent: 4989012 (1991-01-01), Martensson et al.

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