Antenna device and method for portable radio equipment

Details Antenna device and method for portable radio equipment Antenna device and method for portable radio equipment

1997-08-28

2000-01-18

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With radio cabinet

343901, H01Q 124

Patent

active

060161256

ABSTRACT:
The invention relates to an antenna device for portable radio equipment such as mobile telephones (10) and a method for producing the antenna device. Mobile telephone antennas should have good receiving sensitivity and at the same time be compact. An antenna which can be folded down, folded up or retracted into a mobile telephone becomes compact but the receiving sensitivity becomes bad. A solution is an antenna device which comprises two antennas, a primary antenna (11) and a secondary antenna (12). The primary antenna can take up two positions and is always connected to the radio circuits (16) of the mobile telephone. The secondary antenna is a small and compact antenna. When the mobile telephone is in the paging position, the primary antenna is placed in the folded down, folded up or retracted-in position, wherein the secondary antenna is also connected to the radio circuits. The two antennas form an antenna device which has good receiving sensitivity and is compact.

REFERENCES:
patent: 5255001 (1993-10-01), Tamura et al.
patent: 5579023 (1996-11-01), Blaese

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