Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent journals 1962-05
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HEWLETT-PACKARD
JOURNAL
T E C H N I C A L I N F O R M A T I O N F R O M T H E - h p - L A B O R A T O R I E S
Vol. 13, No. 9-10
PUBLISHED BY THE HEWLETT-PACKARD COMPANY, 1501 PAGE MILL ROAD, PALO ALTO, CALIFORNIA
I^I^^HIH
MAY-JUNE, 1962
A Phase -Locking Synchronizer
for Stabilizing Reflex Klystrons
MICROWAVE signal sources of high fre frequency-stabilizing instrument that gives
quency-stability and spectral purity are high stability to typical microwave frequency
increasingly important to many fields. These sources. The instrument is a synchronizer
include doppler systems, nuclear spectroscopy which phase locks a reflex klystron to a de
measurements, spectrum analyzers, as well as sired frequency between 1 and 12.4 gigacycles.
telemetry, radio astronomy, and other com The frequency is a harmonic (± the i-f fre
munications-type work. All of these applica quency) of a crystal oscillator in the Synchron
tions are characterized izer, and the klystron, when so controlled, pro
by the need for good vides a signal virtually as stable and spectrally
short- and long-term pure as the rf crystal reference itself. When thus
stability as well as low synchronized, the klystron will have a short-
residual f-m noise over term stability of 1 /10s (averaged over one sec
a wide spectrum about the operating frequency. ond) and a long term stability of 1/10° per
To meet these stability demands, -hp-'s week. At the same time residual fm in the
Dymec division has developed a versatile klystron due to power supply ripple will be
MSEC-)
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