• Jasmeet Singh
• Er.Amrinder Kaur

In this paper, multilayer microstrip patch antenna for C-Band radar applications has been introduced. It is fed by proximity coupled feed line and mutual coupling between multilayer substrates has been increased by etching circular cavity in the ground plane. A proposed antenna design consisting two rectangular patches with proximity feed line. Due to proper alignment of two patches on multiple substrates, two resonant modes are generated which improved the impedance bandwidth up to 40% (VSWR<2). The predicted efficiency from the results of simulation is 94%. This antenna maintains a constant gain of 4dB on operating frequency of 4.5GHz and designed by using structure simulator.

Multilayer structure, MSA Patch Antenna, cavity and Feed Line.

"Improving Bandwidth in Patch Antenna Using Cavity Backing & Multilayer Structure", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 4, page no.d13-d16, April-2024, Available :http://www.jetir.org/papers/JETIR2404303.pdf

"Improving Bandwidth in Patch Antenna Using Cavity Backing & Multilayer Structure", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 4, page no. ppd13-d16, April-2024, Available at : http://www.jetir.org/papers/JETIR2404303.pdf