Communications: radio wave antennas – Antennas – With radio cabinet
Patent
1991-08-22
1992-08-11
Lee, John D.
Communications: radio wave antennas
Antennas
With radio cabinet
343846, H01Q 124
Patent
active
051383284
ABSTRACT:
An integral diversity antenna especially suited for use in a laptop computer device without the need for changing or otherwise altering such devices pre-established form factor. Two separately located printed circuit board antenna structures are orthogonally mounted in an associated counterpoise. One such antenna structure is vertically polarized and the other horizontally polarized. In this manner, both spatial and polarization diversity is achieved. The counterpoise serves the additional purpose of affecting both RFI and EMI shielding of the laptop computer's LCD display and driven circuitry.
REFERENCES:
patent: 4494120 (1985-01-01), Garay
patent: 4584585 (1986-04-01), Marko et al.
patent: 4584709 (1986-04-01), Kneisel et al.
patent: 4849765 (1989-07-01), Marko
Garay Oscar
Hamilton Robert W.
Vanderhelm Ronald J.
Zibrik Larry
Lee John D.
Motorola Inc.
Southard Donald B.
Wise Robert E.
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