Results 51 to 60 of about 2,140 (163)

Dual Band and Beam-Steering Antennas Using Reconfigurable Feed on Sierpinski Structure

International Journal of Antennas and Propagation, 2015
Fractal patch antennas based on the Sierpinski structure are studied in this paper. The antennas operate at dual bands (around 2 and 5 GHz) and are designed to steer the beam directions at around 5 GHz band (the first harmonic).
Seonghun Kang, Chang Won Jung
doaj   +1 more source

Electronically Tunable Antenna Pair and Novel RF Front-End Architecture for Software-Defined Radios

EURASIP Journal on Advances in Signal Processing, 2005
This paper proposes a novel RF front-end architecture for software-defined radios (SDRs) based on an electronically tunable antenna pair controlled by an antenna control unit (ACU) consisting of field effect transistor (FET) switches and a field ...
Oh Sung-Hoon, Aberle James T, Anantharaman Sreeraman, Arai Kentaro, Chong Han Liang, Koay Seng Chee   +5 more
doaj   +1 more source

Bandwidth Performances of Reconfigurable Reflectarrays: State of Art and Future Challenges [PDF]

Radioengineering, 2018
Reconfigurable antennas allow to meet the increasing demands of modern RF communication systems for reconfiguration capabilities, such as beam-steering, multi-band operation, polarization flexibility or frequency agility.
S. Costanzo, F. Venneri, G. Di Massa, A. Borgia, A. Raffo   +4 more
doaj  

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

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

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

Research on the Development of Frequency Reconfigurable Antenna and Polarization Reconfigurable Antenna

IOP Conference Series: Earth and Environmental Science, 2019
Yanzhuang Yin, Mingming Lv, Long Ma, Xubao Sun   +3 more
openaire   +1 more source