Sampling phase detector

Details Sampling phase detector Sampling phase detector

1998-02-02

1999-05-04

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

327 2, 327583, G01R 2500

Patent

active

059007478

ABSTRACT:
The sampling phase detector whose output signal (fd) has a very broad-band and a very even frequency response characteristic includes a step-recovery-diode (SRD) to which a series circuit including at least two diodes (D1,D2) is connected in parallel by means of coupling capacitors (Ck1,Ck2). An input signal is fed to the diodes (D1,D2) by means of an R/C-network (R1,R2,C3,C4) and an output signal (fd) is taken off, which corresponds to the phase shift between an input signal (fo) and a reference signal (fr). The reference signal (fr) is fed to the step-recovery-diode (SRD) via a balancing transformer (Tr). Decoupling resistors (Rs1,Rs2) are included in the connecting lines from the balancing transformer (Tr) to the step-recovery-diode (SRD), which damp interfering resonances or reflections of the balancing transformer.

REFERENCES:
patent: 4810904 (1989-03-01), Crawford
Product Catalog of Alpha Industries Inc., Apr. 22, 1994.
Wilson, M.P., et al: "Fundamental 26GHZ YIG Phase Locked Source", Proceedings of the 23rd, European Microwave Conference, Madris, Sep. 6-9, 1993, Sep. 6, 1993, European Microwave Conference Management Committee, pp. 800-803.

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