Title :
Inductively-Loaded Yagi-Uda Antenna With Cylindrical Cover for Size Reduction at VHF-UHF Bands
Author :
Tirado-Mendez, Jose Alfredo ; Jardon-Aguilar, Hildeberto ; Flores-Leal, Ruben ; Reyes-Ayala, Mario ; Iturbide-Sanchez, Flavio
Author_Institution :
Res. & Adv. Studies Center, CINVESTAV, Mexico City, Mexico
Abstract :
A new technique is employed to reduce the size of Yagi-Uda antennas. The technique consists of adding short circuited cylindrical covers to the structure, making the elements be inductively loaded, and as a result, increase the electric length. A prototype resonating at 660 MHz is developed, and compared to a conventional Yagi-Uda antenna. An effective area reduction of 35% is achieved without decreasing, considerably, the gain, preserving the bandwidth, and front to back lobe ratio.
Keywords :
UHF antennas; VHF antennas; Yagi antenna arrays; wire antennas; VHF-UHF band; antenna size reduction; electric length; frequency 660 MHz; inductively-loaded Yagi-Uda antenna; reactive load; short circuited cylindrical cover; wire antenna; Reactive load; Yagi-Uda; size reduction; wire antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2010.2096397
