Communications: radio wave antennas – Antennas – With vehicle
Patent
1996-10-24
1999-04-27
Wong, Don
Communications: radio wave antennas
Antennas
With vehicle
343713, 343769, H01Q 132
Patent
active
058984089
ABSTRACT:
A low cost window-mounted antenna system for mobile communication systems operating at frequencies in and above the 1.5 GHz band includes an annular ring aperture coupler fabricated on printed circuit boards on each side of the window, with a microstrip line etched on each of the printed circuit boards. A collinear array-type whip antenna with a 1/2-wavelength lower section is used with the coupler. A coplanar waveguide trace is printed on the outside coupling unit to form an impedance matching network for the active element. The RF signal is thus electro-magnetically coupled through the window.
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Larsen Electronics, Inc.
Phan Tho
Wong Don
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