Results 71 to 80 of about 10,565,311 (162)

Do We Really Need Frequency‐Selective Surface and Metasurface Reflectors for Antenna Gain Enhancement, or Are Metallic Reflectors Enough?

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Enhancing antenna gain remains a key requirement in modern wireless systems, particularly with the rapid evolution of 5G, emerging 6G networks, satellite links, and high‐resolution radar. Recent research trends increasingly rely on frequency‐selective surfaces (FSSs) and metasurface‐based reflectors, which offer precise electromagnetic wave control ...
A. J. A. Al-Gburi, Mohammad Rezwan Habib
wiley   +1 more source

A wideband series fed patch array with side lobe level control

, 2020
In this paper a novel series fed patch array for healthcare radar monitoring applications has been proposed. The antenna is composed of six patches and works in the 5.8GHz Industrial, Scientific and Medical (ISM) band.
Pisa S., Sacco G., D'Atanasio P.
core   +1 more source

Joint Decoupling Optimization of Frequency Offsets and Array Elements for Frequency Diverse Arrays

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Frequency diverse array (FDA) has a distance‐angle–dependent beam direction map, which has a greater application advantage than phased array. However, due to the distance‐angle coupling and periodicity of its beam direction map, it makes the parameter information of the target obtained through FDA have ambiguous phenomena. Currently, researchers mostly
Yuming Lu, Qinlin Li, Kefei Liao, Ningbo Xie, Hanbo Chen, Giovanni Magno   +5 more
wiley   +1 more source

Imaging memory in temporal lobe epilepsy: predicting the effects of temporal lobe resection [PDF]

, 2010
Functional magnetic resonance imaging can demonstrate the functional anatomy of cognitive processes. In patients with refractory temporal lobe epilepsy, evaluation of preoperative verbal and visual memory function is important as anterior temporal lobe ...
Thompson, P. J., Samson, R. S., Yogarajah, M., Symms, M. R., Koepp, M. J., Powell, R. H. W., Duncan, J. S., Bonelli, S. B.   +7 more
core  

A Linear Active Rampart Antenna Array With Two‐Dimensional Beam‐Scanning Capability for FMCW Radar Applications

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
A novel linear active rampart array that is able to steer in the azimuth plane through frequency sweeping and in the elevation plane through phase shifting has been developed. The presented system uses eight active elements and two parasitic ones to ensure consistent radiation patterns.
Tudor Ioan Popa, Gabriele Federico, A. Bart Smolders, Diego Caratelli, Chien-Jen Wang   +4 more
wiley   +1 more source

Multiband Crescent Array Antennas for THz Applications

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The design and analysis of multiband crescent array antennas for THz applications are proposed in this article. Beginning with a 1 × 2 array, then on to a 1 × 4 array, and finally to a 2 × 4 crescent patch array, the analysis is carried out from a single‐element THz crescent patch.
Harini V., Pramod Kumar, Sairam M. V. S., Madhu R., Pallavi M., Deepali Deepali   +5 more
wiley   +1 more source

Circular aperture antenna with spherical lens for mmWave radar level meter

Ain Shams Engineering Journal
This paper proposes a novel design for a circular aperture antenna using a spherical lens and absorbing material to achieve narrow beamwidth and low side lobe level (SLL) for mmWave radar level meter (RLM) applications.
Jae-Ho Lee, Kyoung-Sub Oh, Dong-Wook Seo
doaj   +1 more source

Micro‐Fabricated THz Antenna for Short‐Range Wireless Communication

International Journal of RF and Microwave Computer-Aided Engineering, Volume 2026, Issue 1, 2026.
In the rapidly evolving field of terahertz (THz) communications, the design and fabrication of efficient antennas pose significant challenges due to the inherent complexities of operating at such high frequencies. This paper presents a microfabricated THz antenna array featuring triangular‐slot patches designed to enhance bandwidth, gain, and ...
Muhammad Zubair, Abdoalbaset Abohmra, Adnan Zahid, Farooq A. Tahir, Muhammad Imran, Kamran Arshad, Khaled Assaleh, Bo Liu, Qammer H. Abbasi, Mohammad Rezwan Habib   +9 more
wiley   +1 more source

Nulls and side lobe levels control in a time modulated linear antenna array by optimizing excitations and element locations using RGA

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper a novel approach based on the Real coded Genetic Algorithm (RGA) is proposed to improve nulling performance as well as suppression of Side Lobe Level (SLL) of a Time Modulated Linear Antenna Arrays (TMLA).
Bipul Goswami, Durbadal Mandal
doaj   +1 more source

Residual calibration error impact on SMOS SLL performance

, 2014
SMOS Side Lobe Level (SLL), which is caused by the limited coverage of the measured visibility samples in the frequency domain, is responsible for non-negligible radiometric errors at pixels placed close to large brightness temperature transitions (e.g ...
Israel Duran, Nuria Duffo, Ignasi Corbella, Duffo Ubeda, Núria, Francesc Torres, Durán Martínez, Israel, Manuel Martin-Neira, Corbella Sanahuja, Ignasi, Wu Lin, Lin, Wu, Torres Torres, Francisco, Martín Neira, Manuel   +11 more
core   +1 more source