Defected ground structure for beam steering array antenna applications
Incorporation of Defected Ground Structure (DGS) into the Microstrip Phased Array Antenna (PAA) provides desirable changes to the direction of the main beam. In this paper, investigation on the development of 2 x 1 rectangular patches which operates at 9 GHz is presented. The two rectangular patches...
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| Main Authors: | , , |
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| Format: | Article |
| Published: |
Asian Research Publishing Network (ARPN)
2015
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| Subjects: | |
| Online Access: | http://www.arpnjournals.org/jeas/research_papers/rp_2015/jeas_1015_2775.pdf http://www.arpnjournals.org/jeas/research_papers/rp_2015/jeas_1015_2775.pdf http://eprints.uthm.edu.my/8114/1/Dr._Fauziahanim_2.pdf |
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| Summary: | Incorporation of Defected Ground Structure (DGS) into the Microstrip Phased Array Antenna (PAA) provides
desirable changes to the direction of the main beam. In this paper, investigation on the development of 2 x 1 rectangular
patches which operates at 9 GHz is presented. The two rectangular patches are separated at 0.258 and the microstrip line
is feeding to the center of the patches to provide impedance matching. Then, an orthogonal-I-shaped DGS is inserted in
between the two patches at the ground plane. It is found that by changing the dimension of the DGS, the main lobe of the
PAA increases from 39 to 137, however, the directivity of the arrays maintains about 6 dBi. This demonstrates the
potential of employing DGS to steer the main beam of PAA instead of using additional phase shifter which is bulky and
more complicated to connect to the antenna’s feeding line. |
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