국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Novel Phased Array Scanning Employing A Single Feed Without Using Individual Phase Shifters
저자	Host, Nicholas K.;; Chen, Chi-Chih;; Volakis, John L.;; Miranda, Felix A.
Keyword	BORESIGHTS;; DIPOLES;; FABRICATION;; PHASED ARRAYS;; PROTOTYPES;; SCANNING;; TRANSMISSION LINES
URL	http://hdl.handle.net/2060/20120017466
보고서번호	GRC-E-DAA-TN5796
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Phased arrays afford many advantages over mechanically steered systems. However, they are also more complex, heavy, and most of all costly. The high cost mainly originates from the complex feeding structure. This paper proposes a novel feeding scheme to eliminate all phase shifters and achieve scanning via one-dimensional motion. Beam scanning is achieved via a series fed array incorporating feeding transmission lines whose wave velocity can be mechanically adjusted. Along with the line design, ideal element impedances to be used in conjunction with the line are derived. Practical designs are shown which achieve scanning to +/-30deg from boresight. Finally, a prototype is fabricated and measured, demonstrating the concept.