Title :
Inkjet printed ultra wideband spiral antenna using integrated balun on liquid crystal polymer (LCP)
Author :
Kim, Sangkil ; Tentzeris, Manos M. ; Jin, Guiping ; Nikolaou, Symeon
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
In this paper, an ultra wideband spiral antenna with a planar, integrated balun is inkjet printed on liquid crystal polymer (LCP) substrate and operates successfully from 1 GHz up to 8 GHz. An exponentially tapered spiral microstrip balun is used for, the matching of the 130 Ω input impedance, the characteristic impedance (Z0) of 50 Ω, at the feed point. The equiangular spiral antenna is planar and low profile since a bulky balun is not required. Both the microstrip balun and the spiral arms are inkjet printed on LCP. The fabricated antenna covers a wideband frequency range (1~8GHz) that corresponds to L, S, and C bands.
Keywords :
UHF antennas; antenna feeds; baluns; ink jet printing; liquid crystal polymers; microstrip antennas; planar antennas; spiral antennas; ultra wideband antennas; C-bands; L-bands; LCP substrate; S-bands; characteristic impedance; equiangular spiral antenna; exponentially tapered spiral microstrip balun; feed point; frequency 1 GHz to 8 GHz; inkjet printed ultrawideband spiral antenna; integrated balun; liquid crystal polymer; planar integrated balun; resistance 130 ohm; resistance 50 ohm; Impedance; Impedance matching; Microstrip; Spirals; Substrates; Ultra wideband antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6349039
