Small antenna for portable radio equipment

Details Small antenna for portable radio equipment Small antenna for portable radio equipment

1997-06-30

1999-08-10

Wong, Don

Communications: radio wave antennas

Antennas

With lumped reactance for loading antenna

343702, 343749, 343846, H01Q 900

Patent

active

059365870

ABSTRACT:
Disclosed is a small, lightweight antenna having a relatively high gain, particularly suited for use with a portable radio device such as a bidirectional pager. In an exemplary embodiment, the antenna includes a loaded monopole radiator and a ground radiator. The loaded monopole radiator includes first and second conductors on a printed circuit substrate, where the first conductor has a given length oriented in a horizontal direction. The second conductor has a meander line shape and is oriented in a vertical direction. The ground radiator includes separately a first ground and a second ground at a lower portion of the printed circuit substrate, where the first and second grounds are symmetrical with respect to the second conductor.

REFERENCES:
patent: 4313121 (1982-01-01), Campbell et al.
patent: 4684953 (1987-08-01), Hall
patent: 5706016 (1998-01-01), Harrison

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