Antenna for a radio communication apparatus

Details Antenna for a radio communication apparatus Antenna for a radio communication apparatus

1995-09-27

1996-07-30

Le, Hoanganh

Communications: radio wave antennas

Antennas

With radio cabinet

343895, 343718, H01Q 124, H01Q 112, H01Q 1108

Patent

active

055416101

ABSTRACT:
An antenna equipment employing a chip inductor based antenna includes a multilayered miniaturized chip inductance element having an approximately .lambda./4 wavelength which achieves a half-wave dipole antenna performance together with a ground having an approximately .lambda./4 wavelength. In a preferred embodiment, the inductance element is formed of a plurality of thin sheets of insulating material carrying conductor segments which are connected through via-holes in the sheets to form a spiral inductance element within the stack of sheets. Direct connection avoids impedance matching circuit insertion loss and low-cost miniaturization with reduced antenna gain deterioration from surrounding conductors is provided for an effective miniature portable radio communication apparatus.

REFERENCES:
patent: 4873527 (1989-10-01), Tan
patent: 5250923 (1993-10-01), Ushiro et al.
patent: 5374937 (1994-12-01), Tsunekawa et al.
patent: 5412392 (1995-05-01), Tsunekawa
Sakakura et al., "Ultra-Miniature Chip Inductors Serve at High Frequency" JEE Jour. of Elec. Engin., vol. 30, No. 324, Dec. 1993, pp. 48-51.

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