Title :
X- through Q-band log-periodic antenna with monolithically integrated μ-coaxial impedance transformer/feeder
Author :
Saito, Yuya ; Mruk, Joseph R. ; Rollin, J.M. ; Filipovic, Dejan S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Colorado, Boulder, CO, USA
Abstract :
An over two octaves wideband rectangular coaxial line fed log-periodic antenna is introduced. The feed line configuration consists of a three-step quarter-wave impedance transformer designed for matching 160 ?? nominal antenna impedance to 50 ??. The transformer (feeder) is monolithically integrated with the antenna by a sequential surface micromachining process known as PolyStrata . Measurements and simulations have shown a VSWR < 2:1 from X- through Q-band.
Keywords :
antenna feeds; broadband antennas; coaxial cables; impedance convertors; impedance matching; log periodic antennas; micromachining; monopole antenna arrays; PolyStrata; VSWR; X- through Q-band log-periodic antenna; antenna impedance matching; feed line; monolithic integrated ??-coaxial impedance transformer; sequential surface micromachining process; wideband rectangular coaxial line;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1170
