arxiveess.SP2026-07-12
An X-Band Monopulse Direction-Finding Receiver Based on a Rat-Race Comparator and a $2\times2$ Antipodal Vivaldi Array
M. Ahmad Nabil, Sohaib Yaqoob Chaudhry, Salman Liaquat
This paper presents the design, fabrication, and experimental validation of a compact monopulse direction-finding (DF) receiver operating in the X-band. The receiver combines a $2 \times 2$ antipodal Vivaldi antenna array with a rat-race (180-degree hybrid) comparator network tha…