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- Title
Gain and Bandwidth Enhancement of Circularly Polarized MSA Using PRS and AMC Layers.
- Authors
Jagtap, Shishir D.; Gupta, Rajiv K.; Chaskar, Nayana; Kharche, Shilpa; Thakare, Rajashree
- Abstract
In this paper, a circularly polarized (CP), high gain and wide bandwidth metal plated microstrip antenna (MSA) using partially reflecting surface (PRS) and artificial magnetic conductor (AMC) layers is proposed. The bandwidth of MSA is increased primarily, using AMC layers, and gain is increased by placing the antenna in a Fabry-Perot cavity (FPC) resonator. The two slotted AMCs are designed to resonate at two frequencies which electromagnetically couple to provide wide bandwidth. The FPC antenna with PRS and AMC layers provides higher gain, more impedance bandwidth, less gain variation and more miniaturization than the antenna without AMC layers. The proposed antenna provides S u < --10 dB, axial ratio (AR) < 3dB and 17.4dBi peak gain with gain variation < 3 dB over 5.725 GHz to 6.4 GHz frequency band. Broadside radiation patterns have side lobe level (SLL) < -- 20dB, cross polarization (CPL) < --16dB and front to back (F/B) lobe ratio > 20dB. The overall antenna dimensions are 2.83Ao x 3.23Ao x 0.49Ao, where Ao is the free space wavelength corresponding to the central frequency of 5.725-6.4 GHz. The proposed structure is fabricated, and the measured results agree with simulation ones.
- Subjects
BANDWIDTHS; POLARIZATION (Nuclear physics); MICROSTRIP antennas; ELECTRICAL conductors; FABRY-Perot lasers; COMPUTER simulation
- Publication
Progress in Electromagnetics Research C, 2018, Vol 87, p107
- ISSN
1937-8718
- Publication type
Article
- DOI
10.2528/pierc18072205