NDLI: Dual-polarised X-band patch sub-array with hybrid feed network for integrated small-satellite SAR payload

Content Provider	IET Digital Library
Author	Zhao, X. Yeo, S. P. Ong, L. C.
Abstract	A low-profile wideband dual-polarised X-band patch sub-array fed by a hybrid series/parallel network is designed for an integrated small-satellite synthetic aperture radar payload. The experimental results demonstrate that the sub-array, with 1 × 16 patch radiators, fully covers the targeted 9.65 GHz band with 14 dB bandwidths of 9–10.3 GHz for V-polarisation (VP) and 9.3–9.95 GHz for H-polarisation (HP). The isolation between the different feed ports is higher than 36 dB with a peak value of 45 dB. The sub-array achieves cross-to-co-polarisation ratios of below −32 dB within half-power beamwidth scopes of 6° for both HP and VP. The sidelobes maintain −24 dB for HP and −20 dB for VP. The average realised gains are around 17 dBi for both polarisations.
Starting Page	1501
Ending Page	1502
Page Count	2
ISSN	00135194
Volume Number	53
e-ISSN	1350911X
Issue Number	Issue 23, Nov (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/53/23
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2017.2208
Journal	Electronics Letters
Publisher Date	2017-10-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Antenna Accessory Antenna Array Antenna Feeds Antenna Radiation Pattern Cross-to-co-polarisation Ratio Electromagnetic Wave Polarisation Frequency 9 GHz to 10.3 GHz Gain -20 DB Gain -24 DB Gain 14 DB Gain 45 DB H-Polarisation Hybrid Feed Network Hybrid Series-parallel Network Integrated Small-satellite SAR Payload Integrated Small-satellite Synthetic Aperture Radar Payload Low-profile Wideband Dual-Polarised X-band Patch Subarray Fed Microstrip Antenna Array Microwave Antenna Array Radar Antenna Radar Equipment Spaceborne Radar Synthetic Aperture Radar System And Application V-Polarisation VP
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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