Null Steering of Circular Array Using Array Factor for GPS Anti-Jam
- Authors
- Kwon, Taek-Sun; Lee, Jae-Gon; Lee, Jeong-Hae
- Issue Date
- Oct-2018
- Publisher
- KOREAN INST ELECTROMAGNETIC ENGINEERING & SCIENCE
- Keywords
- Anti-Jam; Array; Circular Array; Null Steering
- Citation
- JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE, v.18, no.4, pp.267 - 269
- Journal Title
- JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE
- Volume
- 18
- Number
- 4
- Start Page
- 267
- End Page
- 269
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/3197
- DOI
- 10.26866/jees.2018.18.4.267
- ISSN
- 2234-8409
- Abstract
- In this letter, the null steering of a circular array is presented using a modified array factor (AF) for a global positioning system (GPS) anti-jam. The seven radiating elements were designed using a mu-zero resonance (MZR) circularly polarized (CP) antenna arranged toward the center. Since the radiating elements, which are arranged toward the center, have a CP characteristic, the AF of the seven radiating elements has to be modified considering the rotation angle of the nth radiating element. The phases of input ports can be calculated to implement a nulling of radiation patterns where the modified AF is zero. To verify the modified AF for null steering in the desired direction, two cases of power dividers operating in L-2 band (1.2276 GHz) were fabricated to achieve pattern nulling at a certain angle. The modified AF can be confirmed by a comparing the simulated and measured radiation patterns.
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Collections - College of Engineering > School of Electronic & Electrical Engineering > 1. Journal Articles
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