Title :
Minimisation of phase error in digitally controlled attenuator
Author :
Vu, T.B. ; Lo, Kam W.
Author_Institution :
University of New South Wales, School of Electrical Engineering & Computer Science, Sydney, Australia
Abstract :
With null steering by amplitude-only control, it is essential that phase errors introduced by attenuators be as small as possible. A method of minimising phase errors is discussed. It is shown that very small phase errors over the whole attenuation range can be obtained if more diodes are used.
Keywords :
antenna accessories; attenuators; errors; microwave devices; solid-state microwave circuits; PIN device; amplitude-only control; antenna beam scanning; digitally controlled attenuator; error minimisation; null steering; p-i-n diodes; phase error; solid-state microwave circuits;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850651
