CRLH-TL Unit Cell for the Design of a Wideband Dual Circularly Polarized Antenna

2020 ◽  
Author(s):  
Lehu Wen ◽  
Steven Gao ◽  
Qingling Yang ◽  
Qi Luo ◽  
Xiaofei Ren ◽  
...  
Keyword(s):  
Unit Cell ◽  
Circularly Polarized

scholarly journals Rotated infrared antenna transmitarray for the manipulation of circularly polarized wavefronts

2014 ◽  
Vol 1 ◽  
pp. 8 ◽  
Author(s):  
Yuchu He ◽  
George V. Eleftheriades
Keyword(s):  
Antenna Array ◽  
Polarized Light ◽  
Phase Control ◽  
Photonic Devices ◽  
Unit Cell ◽  
Fabrication Technology ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Local Rotation ◽  
Infrared Frequencies

An IR optical transmitarray is presented based on Antenna Array Sheet (AAS) for the manipulation of circularly polarized light. The unit cell of the transmitarray comprises three layers of metallic elliptical patches. Complete phase control is achieved through the local rotation of each unit cell. Thin refraction and focusing transmitarrays of this sort are demonstrated at infrared frequencies. Moreover, a new concept for realizing a polarization-discriminating device is introduced based on a flat refracting lens. These devices are compatible with current fabrication technology and can become crucial for the integration with other IR and nano-photonic devices.

A Novel Right Handed Circular Polarization Folded Reflectarray Antenna at 60 GHz

2017 ◽  
Vol 7 (3) ◽  
pp. 1580
Author(s):  
Mohd Fairus Mohd Yusoff ◽  
Ronan Sauleau ◽  
Zaharah Johari ◽  
Mohamad Kamal A. Rahim ◽  
Huda A. Majid
Keyword(s):  
Reflection Coefficient ◽  
Circular Polarization ◽  
Axial Ratio ◽  
Unit Cell ◽  
60 Ghz ◽  
Radiation Patterns ◽  
Circularly Polarized ◽  
Left Handed ◽  
Antenna Directivity ◽  
Reflectarray Antenna

A novel right-handed circular polarization (RHCP) folded reflectarray antenna with optimized parameters is presented at 60GHz. The RHCP folded reflectarray antenna is designed using left handed circularly polarized selective surface (LHCPSS) Pierrot unit cell. Through simulation, it is shown that the antenna operates well at 60GHz. The maximum antenna directivity is 19dB with a reflection coefficient below -15dB. The radiation patterns showed good responses with side lobes level below -10dB. In addition, the best axial ratio at 60GHz is achieved as 0.75dB.

Circularly-polarized reconfigurable unit-cell for transmitarray applications in Ka-band

2016 ◽  
Author(s):  
Luca Di Palma ◽  
Antonio Clemente ◽  
Laurent Dussopt ◽  
Ronan Sauleau ◽  
Patrick Potier ◽  
...  
Keyword(s):  
Unit Cell ◽  
Ka Band ◽  
Circularly Polarized

2-bit Reconfigurable Circularly-Polarized Unit-Cell at Ka-band

2018 ◽  
Author(s):  
F. Diaby ◽  
L. Di Palma ◽  
A. Clemente ◽  
L. Dussopt ◽  
Kien Pham ◽  
...  
Keyword(s):  
Unit Cell ◽  
Ka Band ◽  
Circularly Polarized

scholarly journals Experimental Characterization of a Circularly Polarized 1 Bit Unit Cell for Beam Steerable Transmitarrays at Ka-Band

2019 ◽  
Vol 67 (2) ◽  
pp. 1300-1305 ◽  
Author(s):  
Luca Di Palma ◽  
Antonio Clemente ◽  
Laurent Dussopt ◽  
Ronan Sauleau ◽  
Patrick Potier ◽  
...  
Keyword(s):  
Unit Cell ◽  
Experimental Characterization ◽  
Ka Band ◽  
Circularly Polarized

CRLH TL-unit cell loaded tri-band circularly polarized crossed dipole antenna

2016 ◽  
Author(s):  
Kushmanda Saurav ◽  
Debdeep Sarkar ◽  
Yogesh Pal Singh ◽  
Kumar Vaibhav Srivastava
Keyword(s):  
Dipole Antenna ◽  
Unit Cell ◽  
Circularly Polarized

scholarly journals Textile-based flexible linear-to-circular polarizing surface for sband pico-satellites

2019 ◽  
Vol 8 (1) ◽  
pp. 142-149
Author(s):  
Hidayath Mirza ◽  
Ping Jack Soh ◽  
Azremi Abdullah Al-Hadi ◽  
Toufiq Md Hossain ◽  
Rais Ahmad Sheikh ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Patch Antenna ◽  
Axial Ratio ◽  
Ring Structure ◽  
Unit Cell ◽  
Circularly Polarized ◽  
Antenna Performance ◽  
Polarized Waves ◽  
Linearly Polarized

This paper presents a single layered textile-based flexible linear-to-circular polarizing surface. The proposed structure is designed based on a rectangular ring structure for CubeSat application in the S-band. Each unit cell is sized at 0.35λ×0.33λ×0.2λ for operation centered at 2.2 GHz. This unit cell is then multiplied into a 9x10 array to form the polarizing surface. It features a 3 dB axial ratio bandwidth (ARBW) of 34.73%, with a minimum AR of 0.28 dB. Besides that, it also offers a 90 % conversion efficiency bandwidth of up to 47.34%. The proposed structure’s performance is validated by placing it in front of a patch antenna operating at 2.2 GHz. The antenna performance indicated an increase in terms of gain from 3.14 dBi to 7.33 dBi when integrated with the polarizing surface, besides successfully converting linearly-polarized waves to circularly-polarized.

scholarly journals Circularly Polarized Transparent Microstrip Patch Reflectarray Integrated with Solar Cell for Satellite Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
S. H. Zainud-Deen ◽  
N. A. El-Shalaby ◽  
S. M. Gaber ◽  
H. A. Malhat
Keyword(s):  
Solar Cell ◽  
Ground Plane ◽  
Horn Antenna ◽  
Unit Cell ◽  
Electric Conductor ◽  
Circularly Polarized ◽  
Transparent Substrate ◽  
Satellite Applications ◽  
Finite Integral ◽  
Reflectarray Antenna

Circularly polarized (CP) transparent microstrip reflectarray antenna is integrated with solar cell for small satellite applications at 10 GHz. The reflectarray unit cell consists of a perfect electric conductor (PEC) square patch printed on an optically transparent substrate with the PEC ground plane. A comparison between using transparent conducting polymers and using the PEC in unit-cell construction has been introduced. The waveguide simulator is used to calculate the required compensation phase of each unit cell in the reflectarray. The radiation characteristics of 13 × 13 CP transparent reflectarray antenna are investigated. A circularly polarized horn antenna is used to feed the reflectarray. The solar cell is incorporated with the transparent reflectarray on the same area. The solar-cell integration with the reflectarray reduces the maximum gain by about 0.5 dB due to the increase in the magnitude of the reflection coefficient. The results are calculated using the finite integral technique (FIT).

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