Performance evaluation and error analysis of monopulse radar comparator

Simulations are carried how S-parameters of comparator varies with variations in dimensions of hybrid ring and their connecting waveguide dimensions due to fabrication errors. A practical method is suggested to eliminate the effect of fabrication errors on the performance of the comparator with the help of movable short connected at match-terminated port of comparator. Results are presented how S-parameters of comparator very with respect to the position of movable short. This relaxes stringent conditions laid for fabrication of comparator for monopulse radar particularly at high frequencies