A Conformal Frequency Reconfigurable Antenna with Multiband and Wideband Characteristics [PDF]
Sensors, 2022 A compact flexible multi-frequency antenna for smart portable and flexible devices is presented. The antenna consists of a coplanar waveguide-fed slotted circular patch connected to a rectangular secondary resonator (stub).
Niamat Hussain +5 more
doaj +4 more sources
An L-Slot Frequency Reconfigurable Antenna Based on MEMS Technology [PDF]
Micromachines, 2023 Given the shortage of spectrum resources and the demand for communication systems of diminutive size, multi-function, and adaptive characteristics, this paper proposes an L-slot frequency reconfigurable antenna based on the MEMS switch.
Yu Chen +6 more
doaj +4 more sources
Wireless power transfer system with enhanced efficiency by using frequency reconfigurable metamaterial [PDF]
Scientific Reports, 2022 The wireless power transfer (WPT) system has been widely used in various fields such as household appliances, electric vehicle charging and sensor applications. A frequency reconfigurable magnetic resonant coupling wireless power transfer (MRCWPT) system
Dongyong Shan +3 more
doaj +2 more sources
Negative Index Metamaterial-Based Frequency-Reconfigurable Textile CPW Antenna for Microwave Imaging of Breast Cancer [PDF]
Sensors, 2022 In this paper, we report the design and development of a metamaterial (MTM)-based directional coplanar waveguide (CPW)-fed reconfigurable textile antenna using radiofrequency (RF) varactor diodes for microwave breast imaging.
Kabir Hossain +5 more
doaj +2 more sources
Design of a Frequency and Polarization Reconfigurable Patch Antenna With a Stable Gain
IEEE Access, 2018 This paper presents a frequency and polarization reconfigurable patch antenna with a small gain variation. Eight discrete operating frequency bands can be achieved by properly switching shorting pins, and three polarization states, i.e., left-hand ...
Jun Hu, Zhang-Cheng Hao
doaj +3 more sources
Frequency-Reconfigurable Antenna Using Metasurface
IEEE Transactions on Antennas and Propagation, 2014 A frequency-reconfigurable antenna designed using metasurface (MS) to operate at around 5 GHz is proposed and studied. The frequency-reconfigurable metasurfaced (FRMS) antenna is composed of a simple circular patch antenna and a circular MS with the same diameter of 40 mm (0.67 λ) and implemented using planar technology.
S W Cheung, T I Yuk
exaly +4 more sources
Optically Controlled Bias-Free Frequency Reconfigurable Antenna [PDF]
SensorsA bias-free antenna tuning technique that eliminates conventional DC biasing networks is presented. The tuning mechanism is based on a Light-Dependent Resistor (LDR) embedded within the antenna structure.
Karam Mudhafar Younus +3 more
doaj +2 more sources
Compact, Frequency Reconfigurable, Printed Monopole Antenna [PDF]
International Journal of Antennas and Propagation, 2012 This paper proposes a possible implementation of a compact printed monopole antenna, useful to operate in UMTS and WLAN bands. In order to accomplish that, a miniaturization technique based on the application of chip inductors is used in conjunction with
Ricardo Gonçalves +2 more
doaj +3 more sources
Reconfigurable Ring Filter with Controllable Frequency Response [PDF]
The Scientific World Journal, 2014 Reconfigurable ring filter based on single-side-access ring topology is presented. Using capacitive tuning elements, the electrical length of the ring can be manipulated to shift the nominal center frequency to a desired position.
Norfishah Ab Wahab +3 more
doaj +3 more sources
Thermal Frequency Reconfigurable Electromagnetic Absorber Using Phase Change Material [PDF]
Sensors, 2018 Heijun Jeong +2 more
exaly +2 more sources