Title :
A W-band trans-twist microstrip patch reflect-array
Author :
Jahagirdar, D.R.
Author_Institution :
Res. Center Imarat, Hyderabad, India
Abstract :
The design and performance results of a W-band trans-twist microstrip patch reflect-array is described. The reflect-array performs the dual role of collimating the beam and twisting the polarization. The paper also points out the systematic aperture phase errors in the design due to the non-availability of a conjugate pair of patch dimensions that simultaneously delivers the required focusing and twisting. A few antennas were fabricated and tested at W-band. The measured performance showed high gain and low cross-polarization. The performance is very good, repeatable and close to the expected specifications.
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; microstrip antenna arrays; millimetre wave antenna arrays; reflector antennas; W-band trans-twist microstrip patch reflect-array; antenna radiation patterns; aperture phase errors; beam collimation; conjugate pair; cross-polarization; millimeter wave antennas; polarization twisting; Apertures; Collimators; Feeds; Microstrip; Moment methods; Optical reflection; Periodic structures; Phased arrays; Polarization; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552660
