Telecommunications – Transmitter – With coupled antenna
Patent
1983-09-15
1988-04-05
Blum, Theodore M.
Telecommunications
Transmitter
With coupled antenna
455124, 331107R, H04B 104
Patent
active
047364548
ABSTRACT:
A three-element active device is physically and electrically integrated (e.g., by soldering) onto shaped conductive areas in a thin conformable microstrip structure which includes a microstrip antenna radiator. Two of the elements of the active device are connected to microstrip reactance structures which form a series-resonant partial oscillator circuit. The third (output) element of the active device is connected directly to the microstrip antenna radiator via a microstrip transmission line which, together, directly provide the r.f. load impedance for the thus completed oscillator circuit. Quarter wavelength r.f. microstrip segments are also provided to facilitate the feeding of d.c. bias to the active device without disturbing the r.f. circuitry. The oscillator load impedance to be provided by the microstrip radiator is predetermined in accordance with conventional device-line or loadpull impedance measurements so as to maximize the power output of the active device.
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Alberding Gilbert E.
Ball Corporation
Blum Theodore M.
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