Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1989-06-07
1990-08-21
Callahan, Timothy P.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
328 55, 328133, 307262, 307512, H03K 500, H03K 522
Patent
active
049510002
ABSTRACT:
A wide-band phase shifter contains a first (.phi..sub.1) and a second (.phi..sub.2) parallel branch receiving the same input signal (e) and presenting at their output a first (s.sub.1) and a second (s.sub.2) output signal which are shifted with respect to each other by a given angle. The first branch includes a first phase shift module (.phi..sub.1) and the second branch includes a second phase shift module (.phi..sub.2). A first (V.sub..epsilon.1) and a second (V.sub..epsilon.2) control signal are processed by a negative feedback loop having a phase-sensitive detector (10) which receives the output signals (s.sub.1, s.sub.2). A control circuit (CC) receives a control signal (.epsilon.) supplied by the detector (10) and produces the control signals (V.sub..epsilon.1, V.sub..epsilon.2). These signals are generated for producing the oppositely directed phase corrections in the two phase shift modules.
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Shahrianry et al., "Practical Wideband GaAs Phase Detector", IEEE MMMC Symposium, Dallas, Tex., Jan. 18, 1982, pp. 47-49.
Al-Araji et al., "Freq.-Independent Analogue Phase-Shift Network Technique Using FETs", Radio & Electronic Engineer, vol. 50, No. 3, pp. 107-112, Mar. 1980.
Callahan Timothy P.
Goodman Edward W.
U. S. Philips Corporation
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