Results 11 to 20 of about 357,995 (293)

Tunable Liquid Crystal Based Phase Shifter with a Slot Unit Cell for Reconfigurable Reflectarrays in F-Band

Applied Sciences, 2018
An electrically tuned phase shifter based on the single slot unit cell and liquid crystal for a reconfigurable reflectarray antenna was presented. The simulation and measured results obtained at the F-band were used to demonstrate that the dielectric ...
Sheng Gao, Jun Yang, Peng Wang, Andong Zheng, Hongbo Lu, Guangsheng Deng, Weien Lai, Zhiping Yin   +7 more
doaj   +2 more sources

Bandwidth comparison of rectangular and offset cross‐slot frequency‐selective surface polarisation transformers

Electronics Letters, 2021
This letter compares the 3 dB axial ratio (AR) bandwidth (BW) of transmission mode single‐screen linear‐to‐circular polarisation convertors based on three different slot topologies.
Sarah Clendinning, Robert Cahill, Dmitry Zelenchuk, Vincent Fusco   +3 more
doaj   +2 more sources

Double-Layered Frequency Selective Surface Superstrate Using Ring Slot and Dipole-Shaped Unit Cell Structure

Journal of electromagnetic engineering and science, 2010
In this paper, a double-layered frequency selective surface(FSS) superstrate was built and tested. The unit cell of the proposed FSS consists of a ring slot and a dipole-shaped structure and shows a complementary frequency response. Each unit cell is printed on two sides of a substrate.
Hong-Min Lee, Yong-Jin Kim
openaire   +3 more sources

Radiation Characteristic Improvement of X-Band Slot Antenna Using New Multiband Frequency-Selective Surface

International Journal of Antennas and Propagation, 2014
A new configuration of frequency-selective surfaces (FSSs) is designed and presented with multiresonance characteristics which covers all of the frequency domain of X-band from 8 to 12 GHz.
Elham Moharamzadeh
doaj   +2 more sources

Polarization‐insensitive frequency selective rasorber with higher transmission band using modified double cross slot based bandpass layer

International journal of RF and microwave computer-aided engineering, 2021
In this study, a frequency selective rasorber (FSR) is proposed where a transmission band at a higher frequency is achieved besides the lower broadband absorption. The FSR is designed by combining the individual designs of broadband absorber and bandpass
M. M. Zargar, Archana Rajput, K. Saurav, S. Koul   +3 more
semanticscholar   +1 more source

A Miniaturized and High Gain Double-Slot Vivaldi Antenna Using Wideband Index-Near-Zero Metasurface

IEEE Access, 2018
In this paper, a wideband, miniaturized, and high gain double-slot Vivaldi antenna is proposed. First, a corner cutting technique is adopted to broaden the frequency band.
Shuangshuang Zhu, Haiwen Liu, Pin Wen, Lixia Du, Jiafeng Zhou   +4 more
doaj   +1 more source

Antenna-coupled TES bolometer arrays for CMB polarimetry [PDF]

, 2008
We describe the design and performance of polarization selective antenna-coupled TES arrays that will be used in several upcoming Cosmic Microwave Background (CMB) experiments: SPIDER, BICEP-2/SPUD.
Bock, J. J., Bonetti, J. A., Brevik, J., Chattopadhyay, G., Day, P. K., Golwala, S., Kenyon, M., Kuo, C. L., Lange, A. E., LeDuc, H. G., Nguyen, H., Ogburn, R. W., Orlando, A., Trangsrud, A., Turner, A., Wang, G., Zmuidzinas, J.   +16 more
core   +6 more sources

Design Low Crosstalk Ring-Slot Array Structure for Label-Free Multiplexed Sensing

Sensors, 2014
We theoretically demonstrate a low crosstalk ring-slot array structure used for label-free multiplexed sensing. The proposed sensors array is based on an array of three ring-slot and input/output line defect coupling waveguides. Each ring-slot cavity has
Lijun Huang, Huiping Tian, Jian Zhou, Yuefeng Ji   +3 more
doaj   +1 more source

A Wideband Transmitarray Antenna Design Based on the Transmission Characteristic of the UnitCell [PDF]

AUT Journal of Electrical Engineering, 2023
In this paper, a procedure is proposed to design a wideband transmitarray upon a specified frequency band. In this way, the phase control parameter of a unit cell is adjusted in a suggested range, ensuring linear phase change and low transmission loss ...
Mohammadreza Salimi Beni, Mohammad Zoofaghari   +1 more
doaj   +1 more source

Design of Storage Allocation Using Interaction Frequency Heuristic-Order Oriented Slotting Approach to Reduce Delay Time on Traveling Searching Activities in Refinery Unit V Warehouse PT XYZ

Jurnal Rekayasa Sistem Industri, 2018
<p><strong> </strong>Refinery Unit (RU) V is a processing company owned by PT XYZ located in Balikpapan. Refinery Unit V has twelve warehouses with four warehouses being the main focus in this research of RGM, RMS, RIN, and RSP used to store products for refinery maintenance processes.
Ardi Kelana Putra, Ari Yanuar Ridwan, Rio Aurachman   +2 more
openaire   +3 more sources