NDLI: Waveguide slotted antenna array with broadband, dual-polarization and low cross-polarization for X-band SAR applications

Content Provider	IEEE Xplore Digital Library
Author	Wei Wang Jian Jin Jia-Guo Lu Shun-Shi Zhong
Copyright Year	2005
Description	Author affiliation: East China Res. Inst. for Electron. Eng., China (Wei Wang; Jian Jin; Jia-Guo Lu)
Abstract	A broadband dual-polarization slotted waveguide planar antenna array for X-band SAR application is presented. The vertical polarization (VP) is realized with a ridged-waveguide longitudinal slot linear antenna array, while the horizontal polarization (HP) is realized with an untilted narrow-wall slot linear array. The basic part of the array is a subarray comprising an HP and a VP slotted waveguide single-polarization linear array. Each single-polarization linear array with 16 uniformly radiating elements is divided into four groups and fed by a 4-way waveguide power divider to broaden the bandwidth. The ridged slotted waveguide linear array for the VP is fed by a novel waveguide power divider which adapts to the compact width of the radiating guide. An untitled narrow-wall slot waveguide (half height) linear array excited by shaped irises for the HP, which can achieve very low cross polarization, is used. The benefits of this dual-polarization waveguide array, particularly when compared to microstrip arrays, are very low loss and good cross-polarization suppression. A panel of 16/spl times/16 dual-polarized waveguide slotted antenna array is designed, fabricated and measured. The measured results show a good agreement with the calculated ones, verifying the design. With the active transmit/receive module used, an active phased array antennas consisting of several hundreds of dual polarized subarrays can be carried out.
Sponsorship	Nat. Capital Area Council IEEE Aerospace and Electron. Syst. Soc. RADAR Syst. Panel
Starting Page	653
Ending Page	656
File Size	398417
Page Count	4
File Format	PDF
ISBN	078038881X
DOI	10.1109/RADAR.2005.1435907
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Broadband antennas Slot antennas Antenna arrays Linear antenna arrays Microstrip antenna arrays Polarization Waveguide components Power dividers Antenna measurements Phased arrays
Content Type	Text
Resource Type	Article

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