Title :
Using transient properties of a tunable narrowband antenna to realize a dual-band antenna
Author :
Salehi, Marzieh ; Manteghi, Majid
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA, USA
Abstract :
Switched antennas have been used for wireless communication in order to achieve a direct modulation. A combination of semiconductor switch and a radiating element can be employed to decouple the information bandwidth from the antenna bandwidth. This method allows the system to operate in a wideband range using small and resonant antennas instead of wideband radiators. The first attempt to use a switched antenna to increase the impedance bandwidth was done by Merenda (USA Patent 5402133, March 28, 1995) and there have been several publications afterwards. However, most designs suffer from signal ringing, spurious radiation and high switching rate requirements.
Keywords :
antenna radiation patterns; modulation; multifrequency antennas; radiocommunication; resonance; antenna bandwidth; direct modulation; dual-band antenna; high switching rate requirement; impedance bandwidth; information bandwidth; radiating element; resonant antenna; semiconductor switch; signal ringing; spurious radiation; switched antenna; transient property; tunable narrowband antenna; wideband radiator; wireless communication; Antenna measurements; Antennas; Narrowband; Resonant frequency; Switches; Transient analysis;
Conference_Titel :
Radio Science Meeting (USNC-URSI NRSM), 2013 US National Committee of URSI National
Conference_Location :
Boulder, CO
Print_ISBN :
978-1-4673-4776-1
DOI :
10.1109/USNC-URSI-NRSM.2013.6525031
