Results 81 to 90 of about 21,890 (197)

Liquid Crystal-Based Wideband Reconfigurable Leaky Wave X-Band Antenna

IEEE Access, 2019
In this paper, a pattern and frequency reconfigurable leaky wave X-band antenna based on liquid crystal is designed. The frequency sweep characteristics of traditional leaky wave antennas are replaced by electrical properties of liquid crystal materials.
Di Jiang, Xiaoyu Li, Zihao Fu, Puhang Ran, Guofu Wang, Zhi Zheng, Tianliang Zhang, Wen-Qin Wang   +7 more
doaj   +1 more source

A reconfigurable CPW antenna for GPS, GSM and WLAN applications [PDF]

, 2010
Copyright @ 2011 IEEEMultiband reconfigurable antennas are receiving increasing importance in modern wireless communication systems supporting multiservice applications.
AbuTarboush, HF, Al-Raweshidy, H, Budimir, D, Nasr, KM, Nilavalan, R   +4 more
core  

A Novel Shape Memory Alloy Actuator-Based Fluidically Programmable Continuous Frequency Reconfigurable Antenna

IEEE Access
A new actuation technique is introduced for overcoming the complexity and radiation performance degradation issues of actuators-based reconfigurable antennas.
Syed Imran Hussain Shah, Tuan-Anh Le Trong, Wonkyo Kim, Junghyo Nah, Ick-Jae Yoon   +4 more
doaj   +1 more source

Application of adaptive antenna techniques to future commercial satellite communications. Executive summary [PDF]

The purpose of this contract was to identify the application of adaptive antenna technique in future operational commercial satellite communication systems and to quantify potential benefits. The contract consisted of two major subtasks.
Ersoy, L., Lee, E. A., Matthews, E. W.
core   +1 more source

Reconfigurable Antenna Booster System for Multiband Operation in IoT Devices With an SP4T Switch

IEEE Open Journal of Antennas and Propagation
The increase in the IoT (Internet of Things), such as trackers and sensors, puts pressure on device dimensions and performance. This is translated to the antenna system since it has to be both efficient and provide operation across different frequency ...
Elena Garcia, Aurora Andujar, Joan L. Pijoan, Jaume Anguera   +3 more
doaj   +1 more source

Elements of Cellular Blind Interference Alignment --- Aligned Frequency Reuse, Wireless Index Coding and Interference Diversity

, 2012
We explore degrees of freedom (DoF) characterizations of partially connected wireless networks, especially cellular networks, with no channel state information at the transmitters.
Jafar, Syed A.
core  

Concept and Design of a Multi-Polarization Reconfigurable Microstrip Antenna with Symmetrical Biasing Control

Sensors
Wireless communication systems have grown rapidly, moving towards being highly compact, intelligent, and flexible to adapt to changing operating requirements.
Filipa Antunes, Amélia Ramos, Tiago Varum, João N. Matos   +3 more
doaj   +1 more source

Modern Reflectarray Antennas: A Review of the Design, State-of-the-Art, and Research Challenges

IEEE Access
As communication technology advances, high-gain antennas are being investigated for a variety of long-distance applications. One such high gain antenna is reflectarray, it has combined advantageous characteristics of a reflector and phased array antennas.
J. Annal Joy, Sandeep Kumar Palaniswamy, Sachin Kumar, Malathi Kanagasabai, S. Bashyam, Mousa I. Hussein   +5 more
doaj   +1 more source

Review on the new antenna evolution for next generation Wi-Fi 7/8 systems

Tongxin xuebao
The evolution of antenna technologies in Wi-Fi systems was systematically reviewed in this study, with a focus on the state-of-the-art antenna technologies in Wi-Fi 7/8 systems.
DONG Yuandan, YOU Jiawen, LI Tongbo, FAN Yufei   +3 more
doaj  

Reconfigurable Smart Antennas

Antennas are essential and crucial components of radar and wireless communication systems, but sometimes their inability to adapt to new operating conditions can hamper system performance. These limitations can be mitigated or eliminated, and reconfigurable antennas can bring new levels of functionality to any system by enabling it to modify its ...
Faouzi Rahmani, Abdelmounaim Belbachir Kchairi, Nihade Taher, Moustapha El Bakkali, Naima Amar Touhami, Tajeddin Elhamadi   +5 more
openaire   +1 more source