Amplifiers – With semiconductor amplifying device – Including distributed parameter-type coupling
Patent
1988-03-30
1990-09-11
LaRoche, Eugene R.
Amplifiers
With semiconductor amplifying device
Including distributed parameter-type coupling
333125, 330295, 332144, 331 56, H03F 360
Patent
active
049566148
ABSTRACT:
The invention provides a device including a radial combiner for electromagnetic waves and a method using a radial combiner. The invention provides a radial combiner with resistors disposed between the impedance matches capable of combining these signals from a plurality of radially disposed amplifiers or transmitters. By applying desired phase shifts to the signals transmitted by certain amplifiers or transmitters, amplitude-phase modulation of the total signal transmitted can be provided. It is more particularly possible to provide radar pulse modulation for reducing the frequency spectra of the transmitted signal.
REFERENCES:
patent: 3963993 (1976-06-01), Hoffman et al.
patent: 4234854 (1980-11-01), Schellenberg et al.
patent: 4263568 (1981-04-01), Nemit
patent: 4395687 (1983-07-01), Belohoubek
patent: 4398161 (1983-08-01), Lamb et al.
patent: 4424496 (1984-01-01), Nichols et al.
patent: 4477781 (1984-10-01), Reuss
patent: 4549152 (1985-10-01), Kumar
patent: 4641107 (1987-02-01), Kalokitis
patent: 4812782 (1989-03-01), Ajioka
R.C.A. Review, vol. 42, No. 4, Dec. 1981, pp. 596-616, Princeton, N.J., US; M. Kumar: "Dual-Gate FET Phase Shifter"* p. 596, Lines 5-8; p. 597, lines 25-27, 38-39; p. 601, Lines 2-14; p. 612, line 5-p. 613, Line 8; FIGS. 1,2,17*.
IEEE Transactions on Microwave Theory and Techniques, vol. MTT-32, No. 3, Mar. 1984, pp. 317-324, IEEE, New York, US; J. Goel: "A K-Band GaAs FET Amplifier with 8.2-W Output Power", *pp. 320-321: Chapter V; FIGS. 1,7,10*.
M. I. Skolnik: "Radar Handbook", 1970, pp. 7-58/59, McGraw-Hill, Inc., New York, US, *pp. 7-58, Line 23-pp. 7-59, Line 12; FIG. 36*.
"Thomson-CSF"
LaRoche Eugene R.
Lee Benny T.
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