Results 21 to 30 of about 51,777 (301)
Annular planar monopole antennas
IEE Proceedings - Microwaves, Antennas and Propagation, 2002 A type of annular planar monopole antenna is presented. The impedance and radiation characteristics of the monopole with different holes and feed gaps are experimentally examined. The measured results demonstrate that the proposed antenna is capable of providing significantly broad impedance bandwidth with acceptable radiation performance.
Chen, Z.N. +3 more
openaire +3 more sources
IEEE Access, 2022 Metamaterials (MTMs) are artificially engineered materials with unique electromagnetic properties not occurring in natural materials. MTMs have gained considerable attention owing to their exotic electromagnetic characteristics such as negative ...
Bashar A. F. Esmail +2 more
doaj +1 more source
Design of 1x5 Planar Array Microstrip Antenna with Edge Weighting to Increase Gain [PDF]
International Journal of Electronics and Telecommunications, 2023 Research on improving the performance of microstrip antennas is continuously developing the following technology; this is due to its light dimensions, cheap and easy fabrication, and performance that is not inferior to other dimension antennas ...
Imelda Uli Vistalina Simanjuntak +3 more
doaj +1 more source
Antenna array optimisation using semidefinite programming for cellular communications from HAPs [PDF]
, 2007 Array pattern optimisation based on semidefinite programming (SDP) is proposed to improve the coverage performance of cellular communications from High Altitude Platforms (HAPs).
White, G., Xu, Z., Zakharov, Y.
core +1 more source
Bandwidth Enlargement of Planar EBG Antennas [PDF]
2007 Loughborough Antennas and Propagation Conference, 2007 A new structure based on a combination of two PRS (Partially Reflective Surface) is introduced and studied analytically to improve the bandwidth of the FP and EBG antennas. The original procedure developed here leads to a design method for broadening the bandwidth of planar EBG antennas.
Vu, Thai Hung +3 more
openaire +2 more sources
Three-Mode Vortex Wave Generator with Double-Layer Patch Antennas
International Journal of Antennas and Propagation, 2019 With the development of Multiple-Input Multiple-Output technologies, researches on radio vortex wave with orbital angular momentum have become active. At the same time, generators of miniaturized planar antennas have become very interesting.
Jun Hu +4 more
doaj +1 more source
Antenna Designs for CubeSats: A Review
IEEE Access, 2021 Cube Satellites, aka CubeSats, are a class of nano satellites that have gained popularity recently, especially for those that consider CubeSats as an emerging alternative to conventional satellites for space programs.
Suhila Abulgasem +5 more
doaj +1 more source
An active wearable dual-band antenna for GPS and Iridium satellite phone deployed in a rescue worker garment [PDF]
, 2013 An active wearable dual-band circularly polarized microstrip patch antenna for Global Positioning System and Iridium satellite phone applications is presented. It is constructed using flexible foam and fabric substrates, combined with copper-on-polyimide
Declercq, Frederick +2 more
core +1 more source
Double Loop Inductive Feed Patch Antenna Design for Antimetal UHF RFID Tag
International Journal of Antennas and Propagation, 2019 Planar UHF RFID antimetal tag can be widely used for the metallic products or packages with metal material inside. A double loop inductive feed planar patch antenna is proposed for UHF RFID tag mounted on metallic objects.
Lingfei Mo, Chenyang Li
doaj +1 more source
An Ultra-Wideband Ridged Biconical Multibeam Antenna
IEEE Access, 2023 This paper presents an ultra-wideband multibeam antenna with eight radiating elements that are connected to the central cylindrical part. Each radiating element consists of a TEM horn fed by a coaxial to ridged planar waveguide transition. The connection
Mahdi Zoghi +2 more
doaj +1 more source