By Topic

Fast acquisition phase-locked loops for frequency agile pulsed radar systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Ward, C.J. ; University College London, Microwave Research Unit, Electronic & Electrical Engineering Department, London, UK ; Forrest, J.R.

The use of a phase-locked loop for the synchronisation of a varactor-controlled pulsed microwave solid-state source is described. The application is to radar systems and some forms of digital communication where locking must be established repetitively. Of particular importance is the speed of lock-up, and major attention is paid to the design of low group delay loop amplifiers so that maximum lock-in range is obtained with first-order characteristics. The locking performance of a 3 GHz source tunable over more than 10% bandwidth is described and it is shown that lock-up times in the region of 20 ns may be obtained. It is also shown that loop lock-up performance may be substantially influenced by exceedingly low-level leakage signals which can prime the source phase during the build-up of the pulse and either aid or hinder locking.

Published in:

Microwaves, Optics and Antennas, IEE Proceedings H  (Volume:130 ,  Issue: 7 )