Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-07-08
1979-02-06
Buczinski, S. C.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
331 8, 331 17, 331 18, 331 25, 331166, 331172, H01Q 326, H03B 304
Patent
active
041386795
ABSTRACT:
A circuit is provided for synchronizing the oscillation U.sub.o of a pulsed oscillator with a reference oscillation U.sub.m of comparatively small amplitude. The reference oscillation is coupled into the oscillator and a phase control loop is provided in which a phase discriminator compares the phase relationship of both oscillations and provides a resulting control voltage for controlling an adjustable reactance for the frequency change of the pulsed oscillator during the leading edge of the pulse. A phase shifter, adjustable up to 180.degree., is connected between the oscillator and the phase discriminator. The output of the phase discriminator, which is highly resistive, is connected in a low-resistance manner to the adjustable reactance by way of an impedance converter, such as an emitter follower or a multi-stage wide-band amplifier.
REFERENCES:
patent: 3251062 (1966-05-01), Ghose
patent: 3441870 (1969-04-01), Wicker
patent: 3546695 (1970-12-01), Freedman
patent: 3832713 (1974-08-01), Rubin
patent: 3849736 (1974-11-01), Enerson et al.
Leypold Dieter
Schucht Peter
Buczinski S. C.
Siemens Aktiengesellschaft
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