A Compact Broadband Monopulse Microstrip Antenna Array

In this paper, a compact broadband monopulsemicrostrip antenna array is designed for tracking radarapplications. The proposed monopulse radar consists of four2×2 broadband microstrip antenna arrays and comparatorsection. The microstrip antenna uses parasitic patch to increasethe impedance bandwidth as well as antenna gain. Theproposed broadband monopulse microstrip antenna array hasfour substrate layers. To prototype the structure, 16 wilkinsonpower dividers, 16 microstrip antenna elements, 16 parasiticpatch, as well as 4 three sections 90o degree branch linecouplers for comparator section are used. The design procedureas well as s-parameters and radiation patterns in sum, azimuthand elevation plane are presented.

Keywords:

monopulse , stacked microstrip antenna , comparator design