A Novel Compact 360 ◦ Azimuth Scanning Antenna Array for L-Band Applications Sanjana Paul, Pallepogu Prasanna Kumar, and Prerna Saxena 1 Introduction Scanning antenna arrays play a significant role in different applications like satel- lite communications, telecommunication, UAV (unmanned aerial vehicles), etc. The scanning procedure generally involves the use of antenna arrays or a single antenna structure. The antenna arrays are preferred over single element structure because of their accuracy, and with modern wireless application in longer range enforced sys- tems, the high gain scanning antenna array is employed [1]. The scanning antenna array involves beam steering in desired directions. The different array configurations as per geometry are linear, planar, and circular. Planar scanning involves scanning in azimuth plane and elevation plane. The general trend is that azimuth plane scanning is used more than the elevation plane scanning due to widespread applications. There are beam forming networks as well as beam steering techniques which are used for scanning purposes, but beam steering is more preferred due to its simpler designs with reduced computational complexity [2]. The beam steering can be exer- cised either electronically [3] or mechanically. The electronic and mechanical beam steering methods involve almost equal computational complexity, but the mechani- cal beam steering structure escalates the pay load of the system, while the electronic beam steering circuitry aids in bringing down the load on the system. The electronic beam steering uses more of the digital circuitry which are elements of comparatively smaller dimensions. S. Paul (B ) · P. P. Kumar · P. Saxena Department of Electronics and Communication Engineering, Indian Institute of Information Technology, Design and Manufacturing, Kancheepuram, Chennai, Tamil Nadu, India e-mail: edm18d005@iiitdm.ac.in P. Saxena e-mail: prerna.saxena@iiitdm.ac.in © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2022 A. Dhawan et al. (eds.), Recent Trends in Electronics and Communication, Lecture Notes in Electrical Engineering 777, https://doi.org/10.1007/978-981-16-2761-3_56 625