1.9-THz Multiflare Angle Horn Optimization for Space Instruments

• Published in: IEEE transactions on terahertz science and technology Vol. 5; no. 6; pp. 914 - 921
• Main Authors: Chahat, Nacer, Reck, Theodore J., Jung-Kubiak, Cecile, Nguyen, Tinh, Sauleau, Ronan, Chattopadhyay, Goutam
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01-11-2015; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Antenna; Antenna measurements; Arrays; body of revolution finite-difference time-domain (BoR-FDTD); Bolometers; BoR-MoM; Computer Science; Electronics; Engineering Sciences; Gain; genetic algorithm; horn antenna; Horn antennas; measurement; Networking and Internet Architecture; Optimization; submillimeter waves; terahertz (THz); Time-domain analysis; Measurement; terahertz (THz); Bolometers; submillimeter waves; Time-domain analysis; Optimization; genetic algorithm; body of revolution finite-difference time-domain (BoR-FDTD); body of revolution finite-difference time-domain solver; antenna radiation patterns; low side-lobe level; finite difference time-domain analysis; multiflare angle horn optimization; BoR-MoM; Antenna; BoR-FDTD; Antenna measurements; frequency 1.9 THz; in-house software; horn antennas; submillimetre wave antennas; genetic algorithms; low cross polarization; Arrays; horn antenna; Gain; space instruments
• ISSN: 2156-342X; 2156-3446
• DOI: 10.1109/TTHZ.2015.2487781

A multiflare angle horn is optimized with an in-house software using Body of Revolution finite-difference time-domain solver (BoR-FDTD) combined with a genetic algorithm (GA). This antenna is optimized to demonstrate low cross polarization, low side-lobe level, good return loss, and excellent beam circularity over the 1700-2100-GHz frequency range. A prototype with a directivity of 31.7 dBi and a cross-polarization level below -22 dBi was measured at 1.9 THz with excellent agreement with calculation .