Title :
Designing of a simple tap structure for low profile small normal mode helical antenna
Author :
Hong, Wongook ; Yamada, Yoshihide ; Michishita, Naobumi
Author_Institution :
Dept. of Electr. & Electron. Eng., Nat. Defense Acad., Yokosuka
Abstract :
Design methods of the simple tap feed structures are clarified. It is shown that this. Tap feed can match very small input resistance of 1.2 Omega to 50 Omega coaxial cable. And through the designed example, achievement of high gain of 1.08 dBd in the low profile normal mode helical antenna is shown in the case of the metal proximity use.
Keywords :
antenna feeds; coaxial cables; helical antennas; coaxial cable; metal proximity use; resistance 1.2 ohm to 50 ohm; simple tap structure; small normal mode helical antenna; Antenna feeds; Design methodology; Frequency; Helical antennas; Impedance matching; Magnetic resonance; Patch antennas; RFID tags; Slot antennas; Wire;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619330
