Affiliation:
1. School of Electrical and Computer Engineering, Chungbuk National University, Cheong-Ju 28644, Republic of Korea
Abstract
Presented in this paper is a conceptual design by computer simulation of a monopulse reflector antenna with dual-circularly polarized sum patterns and linearly polarized azimuth and elevation difference patterns, which can be called a semi-dual polarized antenna. The proposed antenna consists of a five-element monopulse feed and a prime-focus parabolic reflector. The novelty of the proposed antenna is a monopulse feed consisting of a dual-circularly polarized square waveguide sum channel radiator and linearly polarized rectangular waveguide azimuth and elevation difference channel radiators. The separation of dual circular polarization is realized by a septum polarizer. The difference pattern is obtained by feeding two rectangular waveguides in opposite directions using a coaxial probe. The proposed monopulse feed geometry requires only two power combiners for a monopulse comparator network while providing dual-polarized performance comparable to the full dual-polarized sum and difference channel monopulse scheme. The concept of the proposed antenna is shown in a conceptual design by computer simulation. The monopulse feed is designed first, and then combined with a parabolic reflector. The designed monopulse reflector antenna operates at 14.5–16.0 GHz, and shows excellent sum and difference pattern characteristics: 36.1–36.7 dBc sum channel directivity with 0.65 dB boresight axial ratio and 32.6–32.9 dBi difference channel directivity with 1.56–1.66° crossover angle.
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference19 articles.
1. Barton, D.K., and Sherman, S.M. (2011). Monopulse Principles and Techniques, Artch House. [2nd ed.].
2. A high-performance signal processing for monopulse tracking radar;Hong;Adv. Mater. Res.,2011
3. Amplitude angle monopulse estimation for the four-channel hybrid polarimetric radar system;Zhang;IEEE Antennas Wirel. Propag. Lett.,2017
4. Monpulse antenna-pointing system modelling and simulation;Latifzade;IET J. Radar. Sonar Nav.,2019
5. An, D.-J., and Lee, J.-H. (2020). Performance analysis of amplitude comparison monopulse direction-of-arrival estimation. Appl. Sci., 10.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献