Title :
A 7–21GHz Planar Ultrawideband Modular Array
Author :
Holland, Steven S. ; Vouvakis, Marinos N.
Author_Institution :
Univ. of Massachusetts Amherst, Amherst, MA, USA
Abstract :
This paper presents the Planar Ultrawideband Modular Array (PUMA), a fully planar implementation of Wheeler´s current sheet requiring no feed organizers or external baluns, that can be fabricated entirely using standard planar microwave circuit processes. This allows for low-cost aperture fabrication, high volume production and frequency scalability. The unique feed arrangement of PUMA allows for a modular egg-crate construction, with direct connection to standard 50Ω interfaces, and low profile (~ λ/3 at its highest frequency). Predicted dual-polarized infinite array performance has demonstrated a 3:1 bandwidth (7-21GHz) and scanning with VSWR <; 2.2 out to θ = 45° in all planes. Measurements of a 16x16x2 array are currently in progress.
Keywords :
antenna phased arrays; microwave antenna arrays; ultra wideband antennas; PUMA; VSWR; Wheeler´s current sheet array; dual-polarized infinite array; frequency 7 GHz to 21 GHz; modular egg-crate construction; planar microwave circuit process; planar ultrawideband modular phased array; printed layers; Arrays; Broadband antennas; Dielectrics; Feeds; Resonant frequency; Surface impedance; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5561424
