Title :
1.9-THz Multiflare Angle Horn Optimization for Space Instruments
Author :
Chahat, Nacer ; Reck, Theodore J. ; Jung-Kubiak, Cecile ; Nguyen, Tinh ; Sauleau, Ronan ; Chattopadhyay, Goutam
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
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 .
Keywords :
antenna radiation patterns; finite difference time-domain analysis; genetic algorithms; horn antennas; submillimetre wave antennas; BoR-FDTD; body of revolution finite-difference time-domain solver; frequency 1.9 THz; genetic algorithm; in-house software; low cross polarization; low side-lobe level; multiflare angle horn optimization; space instruments; Antenna measurements; Arrays; Bolometers; Gain; Horn antennas; Optimization; Time-domain analysis; Antenna; BoR-MoM; body of revolution finite-difference time-domain (BoR-FDTD); genetic algorithm; horn antenna; measurement; submillimeter waves; terahertz (THz);
Journal_Title :
Terahertz Science and Technology, IEEE Transactions on
DOI :
10.1109/TTHZ.2015.2487781
