Design and Analysis of Microstrip Patch Array Antenna for 24 GHz Radar Sensors Application 1 Rahul Kumar, 2 Dr. Bharti Chourasia 1 ME Scholar, 2 Associate Professor & HOD 1&2 Department of Electronics & Communication, 1&2 RKDF Institute of Science & Technology, SRK University, Bhopal, India Abstract: As a new type of microwave antenna, micro-strip antenna enjoys the various advantages over parabolic antenna: little section plane, light weight and low cost. It can be made into the structure corresponds with carries such as communication vehicles and so on. Yet the typical micro-strip antenna element is difficult to adapt the demands of satellite communication system in the different aspects like bandwidth, dual frequency and double polarization etc. This paper proposed microstrip patch array antenna for 24 GHz radar sensors application. CST microwave studio used for designing and simulation of antenna array. Proposed antenna achieves -29.01dB return loss at 24GHz resonant frequency, Bandwidth optimized 697.95 MHz and Gain is 13.36 dB. Keywords: K-band, Microstrip, Antenna, Radar, Satellite, Array. 1. INTRODUCTION The millimeter-wave antenna design aspect of the future 5G wireless systems. The study reviews the various millimeter-wave antennas for 5G radar sensors applications. Recent advances in mm- wave antenna are reported and design guidelines are discussed. In Radar Sensors for automotive applications are typically divided into two categories: (1) continuous-wave (CW) radar and (2) pulse radar. CW radar transmits and receives at the same time. The transmitter generates a continuous sinusoidal oscillation at frequency f t which is radiated by the antenna. On reflection by a moving target, the transmitted signal is shifted via the Doppler effect by an amount f d . It is also possible to measure range using a CW radar system by frequency modulation, or digital modulation techniques such as phase shift keying (PSK). A systematic variation of transmitted frequency or phase places a unique time stamp on the transmitted wave at every instant. Figure 1: Basic structure of a microstrip patch antenna An individual microstrip antenna consists of a patch of metal foil of various shapes (a patch antenna) on the surface of a PCB (printed circuit board), with a metal foil ground plane on the other side of the board. Most microstrip antennas consist of multiple patches in a two-dimensional array. In modern days, Microstrip patch antennas become more popular because of its fascinating features such as low cost, light weight, low profile planar configuration which can be effortlessly made conformal to host surface. 2. BACKGROUND H. Jin et al.,[2018] A small scale strip radio wire exhibit with low side-lobe is intended for 24GHz radar sensors right now. The proposed microstrip reception apparatus exhibit is sustained Compliance Engineering Journal Volume 11, Issue 5, 2020 ISSN NO: 0898-3577 Page No: 198