Amplifiers – With distributed parameter-type coupling means – Waveguide – cavity – or concentric line resonator
Patent
1983-01-21
1985-04-30
Mullins, James B.
Amplifiers
With distributed parameter-type coupling means
Waveguide, cavity, or concentric line resonator
H03F 360
Patent
active
045147000
ABSTRACT:
The invention relates to an output amplifier for a transmitting tube, having an operating frequency located in the FM- and the VHF- frequency bands. In order to match the output impedance of the preamplifier to the input impedance of the output amplifier the output amplifier includes a broad-band impedance transformer. Mechanical and electrical flexibility is obtained by using an impedance transformer formed from series/parallel arrangements of coaxial cables. The impedance transformer needs little room and nevertheless provides a broadband impedance match.
REFERENCES:
patent: 4070627 (1978-01-01), Jasinski et al.
Kraus Robert J.
Mullins James B.
U.S. Philips Corporation
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