Amplifiers – With semiconductor amplifying device – Including distributed parameter-type coupling
Patent
1979-12-13
1981-08-04
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including distributed parameter-type coupling
330 56, 330289, 333137, H03F 360
Patent
active
042824915
ABSTRACT:
A multiple channel amplifier providing both gain and/or phase shift to a microwave signal is formed of a set of transmission lines connected in parallel by means of a power splitter at the input end and a power combiner at the output end of the set of transmission lines. The transmission lines are disposed in a cylindrical array of electrically conducting bars which support amplifying and/or phase shifting elements between the bars and withdraw heat from the amplifying and/or phase shifting elements. The transmission lines may be slotted or severed for directing power flow towards an output terminal of the amplifier. The amplifying and/or phase shifting elements are conveniently mounted on a set of heat sinks to form modules, each of which is readily inserted and detached from the cylindrical array. An enlarged region between adjacent bars serves as the site of a module, the opposed surfaces of the bars and of the heat sink providing the function of a transmission line to conduct power along opposite sides of the module resulting in a push-pull amplifier configuration. Impedance matching is provided by transitions in the bar spacing. The splitter and the combiner may include spider-like structures for coupling the bars to a coaxial line, or a crossed-slot aperture and wedge for coupling the bars to a waveguide.
REFERENCES:
patent: 3761834 (1973-09-01), Dudley et al.
patent: 4189683 (1980-02-01), Fassett et al.
MacMaster George H.
Nichols Lawrence J.
McFarland Philip J.
Mullins James B.
Pannone Joseph D.
Raytheon Company
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