Dual-band circularly polarized metamaterial radome for antenna gain enhancement

2016 ◽  
Author(s):  
Hsin-Lung Su ◽  
Hong-Sheng Huang
Keyword(s):  
Dual Band ◽  
Antenna Gain ◽  
Circularly Polarized ◽  
Gain Enhancement

A dual band circularly polarized antenna with parasitic element for gain enhancement

2016 ◽  
Author(s):  
Fereshteh Samadi ◽  
Mohsen Karamirad ◽  
Changiz Ghobadi ◽  
Javad Nourinia ◽  
Rahim Barzeghari
Keyword(s):  
Dual Band ◽  
Circularly Polarized ◽  
Parasitic Element ◽  
Gain Enhancement

scholarly journals Gain Enhancement of Monopole Antenna using AMC Surface

2018 ◽  
Vol 7 (3) ◽  
pp. 69-74 ◽  
Author(s):  
F. Mouhouche ◽  
A. Azrar ◽  
M. Dehmas ◽  
K. Djafer
Keyword(s):  
Band Structure ◽  
Performance Comparison ◽  
Monopole Antenna ◽  
Dual Band ◽  
Antenna Gain ◽  
Magnetic Conductor ◽  
Frequency Bands ◽  
Gain Enhancement ◽  
Unit Cells ◽  
Ring Antenna

A CPW rectangular-ring antenna over an Artificial Magnetic Conductor (AMC) is presented in this work. The AMC is a designed as a dual-band structure having an array of unit cells and operates at 2.45GHz and 5.20 GHz. A CPW antenna uses this dual-band AMC structures as a back-plane. Performance comparison is carried out with and without incorporation of AMC. The simulated and measured results show that the combination of the AMC reflector and the antenna provide directional properties at both frequency bands. It has been found that the antenna gain increases by about 5 dB.

X-band circularly polarized antenna gain enhancement with metamaterials

2011 ◽  
Vol 53 (8) ◽  
pp. 1911-1915 ◽  
Author(s):  
C. Kossiavas ◽  
A. Zeitler ◽  
G. Clementi ◽  
C. Migliaccio ◽  
R. Staraj ◽  
...  
Keyword(s):  
Antenna Gain ◽  
Circularly Polarized ◽  
Gain Enhancement ◽  
X Band

scholarly journals Axial Ratio and Gain Enhancement of a Circular-Ring Slot Antenna Using a Pair of Asymmetrical Rectangular Slots and a Parasitic Patch for a Radio Beacon on a Nanosatellite

Aerospace ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 39 ◽  
Author(s):  
Peberlin Parulian Sitompul ◽  
Josaphat Tetuko Sri Sumantyo ◽  
Farohaji Kurniawan ◽  
Mohammad Nasucha
Keyword(s):  
Axial Ratio ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Electron Content ◽  
Antenna Gain ◽  
Total Electron ◽  
Circularly Polarized ◽  
Gain Enhancement ◽  
Compact Size ◽  
Parasitic Patch

Radio beacons enable measurements of ionospheric radio scintillations and total electron content (TEC). These beacons transmit unmodulated, phase-coherent waves in S-band frequencies. Many satellite applications require circularly polarized (CP) wideband antennas. Their compact size, lightweight, and simple fabrication method make CP antennas suitable for small satellite systems. The slot antenna has wideband impedance, but the 3 dB axial ratio bandwidth (ARBW) is narrower compared to the impedance bandwidth (IBW). In this paper, a circularly polarized circular-slotted antenna (CSA) is proposed to enhance the ARBW and the antenna gain. A pair of asymmetrical rectangular slots, a simple 50 Ω feedline and a parasitic patch were introduced to a CSA to enhance the 3 dB ARBW and the antenna gain. Rectangular slots were inserted on the diagonal axis of the CSA, the feedline was shifted to the left side of the x-axis, and a parasitic patch was attached to the circular slot. The lengths of the rectangular slots correspond to the resonant frequency, and the parasitic patch width corresponds to the higher frequency of the 3 dB ARBW. The asymmetrical rectangular slots, the shifted feedline, and the parasitic patch successfully improved the measured 3 dB ARBW of the antenna by 787.5 MHz or 35.79%. The measured gain of a CSA with left-hand circular polarization (LHCP) was also improved by shifting the feedline and the rectangular slot, achieving a peak gain of 5 dBic.

Dual-Band Circularly Polarized Antenna with Two Pairs of Crossed-Dipoles for RFID Reader

2021 ◽  
pp. 1-1
Author(s):  
Rui Xu ◽  
Jie Liu ◽  
Kun Wei ◽  
Wei Hu ◽  
Zi-Jian Xing ◽  
...  
Keyword(s):  
Dual Band ◽  
Circularly Polarized ◽  
Rfid Reader
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