Communications: directive radio wave systems and devices (e.g. – With particular circuit
Patent
1991-06-13
1992-08-04
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
G01S 7282
Patent
active
051363003
ABSTRACT:
A solid state radar transmitter for use in airborne applications has a modular design which extends into the transmitter. The transmitter is formed of a plurality of power modules the number of which is selected based on the power required for a particular application. For example, two 75 to 100 watt modules may be used for weather radar, while 30 to 60 or more modules may be used for fire control in a military fighter. A radio frequency signal from a stabilized local oscillator is distributed by a splitter to the power modules and a combiner is used to combine the output from the power modules to produce the transmitter output signal. Each power module is formed of parallel connected power amplifiers, preferably formed by GaAs FETs and a power conditioning and control unit. The power conditioning and control unit produces a DC bias across the FETs as desired to produce a particular signal. The transmitter output signals which can be produced in this manner include rectangular, Gaussian on a pedestal and one amplifier at a time for testing purposes.
REFERENCES:
patent: 4336538 (1982-06-01), Radford
patent: 4951060 (1990-08-01), Cohn
Clarke John
Faulkner, Jr. Joseph A.
Kositz John E.
Misek Brian J.
Sinon Gregory K.
Sutcliff W. G.
Tubbesing T. H.
Westinghouse Electric Corp.
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