Phase Shifter having parallel RC networks

Details Phase Shifter having parallel RC networks Phase Shifter having parallel RC networks

1990-06-06

1991-08-27

Wong, Peter S.

Electricity: power supply or regulation systems

For phase shift or control

Using impedance

323218, G05F 300

Patent

active

050436546

ABSTRACT:
Phase shifter to which are applied two signals in a phase opposition (v, -v) is constituted by a first series circuit of a resistor and a capacitor (R.sub.1, C.sub.1), and a second series circuit of a resistor and a capacitor (R.sub.2, C.sub.2). So that neither the relative amplitudes nor the relative phases of all the signals used at the outputs (5, 6, 7, 8) are degraded by the impedance of the stages that follow, the phase shifter includes a first network of a resistor and a capacitor connected in parallel (C.sub.3, R.sub.3), and a second network of a resistor and a capacitor connected in parallel (C.sub.4, R.sub.4). Both the four resistors and the four capacitors of the phase shifter are each substantially equal in value.

REFERENCES:
patent: 3267358 (1966-08-01), Anderson
patent: 3267359 (1966-08-01), Anderson
patent: 3544886 (1970-12-01), Hou et al.
patent: 4725767 (1988-02-01), Mori
Johnson, Active Constant-Gain Variable Phase-Shift Network, IBM Technical Bulletin, vol. 13, No. 1, Jun. 1970, pp. 182, 183.

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