NDLI: Design of a novel switched four beam array antenna for millimeter wave

Content Provider	IEEE Xplore Digital Library
Author	Jae Hee Kim Kyung Duk Jang Woo Jin Byun Bong Su Kim Kwang Seon Kim Myung Sun Song Wee Sang Park
Copyright Year	2007
Description	Author affiliation: Pohang Univ. of Sci. & Technol., Pohang (Jae Hee Kim; Kyung Duk Jang)
Abstract	Phased array system is used to scan an antenna beam to given angles in space. It consists of multiple stationary antenna elements, which are fed coherently, and uses variable phase shifter at each element. The phase shifter is one of the main parts of phased array antennas but it causes loss and complexity is making it. Inevitably, recent demands for highly flexible array control have highlighted the feed network offered by digital control such as, butler matrix for less complexity and loss. The butler matrix makes the orthogonal sets of beams with uniform aperture illumination using switches. But it needs four 90deg hybrids and two crossovers to make a four beam array antenna. These 90deg hybrids and crossovers worsen not only the antenna phase characteristics and operating bandwidth but also the system complexity. We propose a simple feed network for a four beam array antenna with just one 90deg hybrid, two switches, and delay lines. The merit of the proposed antenna is less complexity, in comparison with four beam butler matrix and easy fabrication due to planar structure.
Starting Page	2654
Ending Page	2657
File Size	181608
Page Count	4
File Format	PDF
ISBN	9781424408771
DOI	10.1109/APS.2007.4396080
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna arrays Phased arrays Butler matrix Phase shifters Feeds Switches Digital control Apertures Lighting Bandwidth
Content Type	Text
Resource Type	Article

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