Importance

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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.

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First Claim