Results 211 to 220 of about 8,546 (255)

PIFA frequency reconfigurable antenna

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014
A design of frequency reconfigurable PIFA antenna is presented in this paper. The antenna consists of halves of three concentric rectangular patches. Five RF PIN diodes are inserted in proper locations for frequency reconfigurability. Four switching cases are considered. The first case (all switches are ON) results in a single-band operation at 850 MHz
M. Abou Al-alaa, Hala A. Elsadek, Esmat A. Abdallah, E. A. Hashish   +3 more
openaire   +1 more source

Reconfigurable Pixel-Layer Isolator for Frequency-Tunable On-Frequency Repeaters

IEEE Antennas and Wireless Propagation Letters, 2014
Peer ...
Rodrigo López, Daniel, Díaz Tapia, Edgar, Jofre Roca, Lluís   +2 more
openaire   +4 more sources

Pentagon slot resonator frequency reconfigurable antenna for wideband reconfiguration

AEU - International Journal of Electronics and Communications, 2015
Abstract With the advances in the field of communication and the current state of affairs in the development of antennas the need of compact multiband, multifunctional and cost effective antenna is increased. The study of reconfigurable antennas has made great progress in recent years.
Deepali K. Borakhade, S.B. Pokle
openaire   +1 more source

Thermographic Investigation of Frequency-Reconfigurable Wearable Antennas

2022 16th European Conference on Antennas and Propagation (EuCAP), 2022
The thermal behavior of a frequency-reconfigurable wearable textile antenna is investigated in this paper through in-frared thermography. The relationship between the temperature of the textile antenna and the input power is experimentally considered to identify the antenna hot spots.
Dang, Quoc Hung, Chen, Shengjian Jammy, Fumeaux, Christophe   +2 more
openaire   +2 more sources

Reconfigurable optical frequency comb and its applications

2015 17th International Conference on Transparent Optical Networks (ICTON), 2015
The concept of wavelength division multiplexing (WDM) has revolutionized the field of optical communications. However, the immense demand for bandwidth shows no sign of abating and is pushing service providers to deploy communication networks with increased capacity.
Prince M. Anandarajah, M. Deseada Gutierrez Pascual, Tong Shao, Rui Zhou, Vidak Vujicic, Frank Smyth, Liam P. Barry   +6 more
openaire   +2 more sources

PIFA with reconfigurable frequency bandwidth

2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015
This paper presents a novel Planar Inverted F-Antenna (PIFA) having a reconfigurable frequency operating bandwidth. The physical mechanism for altering the bandwidth is by varying the width of the feedline. This is achieved using a pair of microwave switches. The frequency bandwidth can be reconfigured between 3 discrete values.
openaire   +1 more source

Frequency reconfigurable antenna for DVB‐H applications

Microwave and Optical Technology Letters, 2011
AbstractThis article presents a new reconfigurable DVB‐H antenna for a portable TV or a tablet PC device. The antenna consists in a folded monopole loaded by a diode varactor combined with an open stub used to match the antenna. Design procedure and equivalent model are presented.
Canneva, F., Ferrero, Fabien, Ribero, Jean-Marc, Staraj, Robert   +3 more
openaire   +2 more sources

Frequency reconfigurable antenna using PIN diodes

2014 Twentieth National Conference on Communications (NCC), 2014
A compact frequency reconfigurable double slot antenna for wireless communication is presented. The proposed antenna consists of double slot with six RF PIN diodes placed at different position on the ground plane to achieve frequency reconfigurability. Based on the switching state of the PIN diode the antenna is capable of operating at eleven different
R. Jothi Chitra, Velmurugan Nagarajan
openaire   +2 more sources

Frequency-Domain and Spatial-Domain Reconfigurable Metasurface

ACS Applied Materials & Interfaces, 2020
The recently proposed digital reconfigurable metasurfaces make it possible to manipulate electromagnetic (EM) waves flexibly. However, most existing reconfigurable metasurfaces can only exhibit a relatively single performance in the spatial domain.
Guang Yao Liu, Long Li, Jia Qi Han, Hai Xia Liu, Xiao He Gao, Yan Shi, Tie Jun Cui   +6 more
openaire   +2 more sources

Frequency reconfigurable slot antenna using metasurface

The 8th European Conference on Antennas and Propagation (EuCAP 2014), 2014
A frequency-reconfigurable slot antenna designed using metasurface (MS) is proposed and studied. The proposed antenna is composed of a simple circular slot antenna and a circular MS with the same diameter of 50 mm and implemented using planar technology. The MS is placed directly atop the slot antenna, making the proposed antenna very compact.
Cao, Y, Liu, X, Zhu, H, Yuk, TTI, Cheung, SW   +4 more
openaire   +2 more sources