Amplifiers – With semiconductor amplifying device – Including plural amplifier channels
Patent
1990-01-30
1991-07-16
Mottola, Steven
Amplifiers
With semiconductor amplifying device
Including plural amplifier channels
330286, 333137, H03F 368, H03F 360
Patent
active
050327984
ABSTRACT:
There is disclosed a cavity closure unit for a microwave amplifier containing smaller and larger diameter, upper and lower, divider and combiner cavities on vertically opposite sides of a central part of such unit and disposed between top and bottom parts, respectively, of such unit, each cavity being bounded on a vertical side thereof by an alternation of concentric ridges and valleys. Improvements for such unit are as follows. The central part includes a discontinuity between upper and lower portions which may be a spatial discontinuity permitting removal from each other of the two cavities. The discontinuity may also be one of materials. The closure unit may have below its top, an outside annular notch of "L" vertical cross section providing a seat for downwardly extending feet on the rear ends of amplifier modules mounted in carousel fashion on top of the unit. The mentioned central part may comprise two sheet metal plates, two claddings of metallic material on a plastic disc, or two composite discs each including such a plate or cladding, a plastic backing therefor, and a metal reinforcing plate. For the structures referred to in the preceding sentence, the mentioned ridges and valleys are produced by appropriately inflecting the sheet metal plates or claddings, as the case may be.
REFERENCES:
patent: 4641107 (1987-02-01), Kalokitis
patent: 4724400 (1988-02-01), Luettgenau
AT&T Bell Laboratories
Kip, Jr. R. F.
Mottola Steven
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