@inproceedings{87a80b80ab4f4eb4a55a60ba9e056cec,
title = "Sensitivity analysis of input impedance of a large loop antenna in a waveguide to tilt angle",
abstract = "A large circular loop antenna is used to excite the TE41 mode at operation frequency of 9 GHz inside a circular waveguide section to launch a vortex beam. The antenna is located inside the waveguide such that the real part of its input impedance is equal to 50 Ω. A reactive element is used to match the antenna to a 50 Ω voltage source. We perform a parametric study on the effect of small tilts of the antenna on the input impedance. The study is performed using multi-level fast multipole method (MLFMM) full-wave simulations. Results show that for this design, a tilt in the range ±2◦ along the antenna axis with a tilt of up to +3◦ perpendicular to the antenna axis is tolerable without noticeable degradation in the launcher performance.",
keywords = "Antenna design methods, Antenna tolerance analysis, Impedance matching, Loop antennas, Waveguide antennas",
author = "Salem, {Pelin N.M.H.} and Edip Niver and Salem, {Mohamed A.}",
note = "Publisher Copyright: {\textcopyright} 2018 IEICE; 30th Asia-Pacific Microwave Conference, APMC 2018 ; Conference date: 06-11-2018 Through 09-11-2018",
year = "2018",
month = jul,
day = "2",
doi = "10.23919/APMC.2018.8617244",
language = "English (US)",
series = "Asia-Pacific Microwave Conference Proceedings, APMC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "88--90",
booktitle = "2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings",
address = "United States",
}