Title :
Log-periodic array of dual-feed microstrip patch antennas
Author :
Smith, H.K. ; Mayes, P.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
The dual-feed microstrip patch antenna is presented. This new radiator has broadband match and unidirectional azimuth pattern, desirable characteristics for use in broadband endfire arrays. Design, construction, and experimental results (realized gain, input impedance and far-field patterns) are given for a log-periodic array of dual-feed patches. An array with only ten elements has been demonstrated to operate at nearly constant gain over a 2:1 frequency band with a voltage standing-wave ratio (VSWR) of less than 2:1.<>
Keywords :
antenna radiation patterns; electric impedance; microstrip antennas; microwave antenna arrays; VSWR; broadband endfire arrays; broadband match; dual-feed patches; far-field patterns; gain; input impedance; log-periodic array; microstrip patch antennas; unidirectional azimuth pattern; voltage standing-wave ratio; Azimuth; Bandwidth; Fires; Frequency; Impedance; Log periodic antennas; Microstrip antenna arrays; Microstrip antennas; Patch antennas; Resonance;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
