Results 151 to 160 of about 311,742 (212)

Two-Antenna Gain Measurement Method Using Two UAVs. [PDF]

Sensors (Basel)
Kandregula VR, Zaharis ZD, Vassos E, Ahmed QZ, Khan FA, Whittow WG, Whittaker T, Lazaridis PI.   +7 more
europepmc   +1 more source

Multifunctional Flipping-Based Mechanical Metasurface Enabling Optical-Microwave Dual-Modal Reconfigurability. [PDF]

Adv Mater
Huang S, Cai ZX, Li XY, Chen L, Xu J, Liang JY, Bao JH, Liu C, You JW.   +8 more
europepmc   +1 more source

Medium-adaptive wideband near-field antenna for microwave detection of internal cavities in plant stems. [PDF]

Sci Rep
Elkial MM, Hussein KFA, Mustafa M.
europepmc   +1 more source

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Simple Compact UWB Vivaldi Antenna

2022
Simple compact Ultra Wide Band (UWB) Vivaldi Tapered Slot Antenna (VTSA) is presented in this paper. Detailed parametric studies are performed to get good performance with a compact size. The proposed antenna shows good impedance matching less than −11.283 dB through 3.325 GHz–10.82 GHz.
Sahar Saleh, Widad Ismail, Intan Sorfina Zainal Abidin, Mohd Haizal Jamaluddin, Mohammed H. Bataineh, Asem Alzoubi   +5 more
openaire   +3 more sources

Bent antipodal Vivaldi antenna

The 8th European Conference on Antennas and Propagation (EuCAP 2014), 2014
A bent antipodal Vivaldi antenna with a -6 dB bandwidth from 150 MHz is presented. The whole antenna is realized on a 600 × 600 mm 2 silicone substrate. In this paper we describe the design, the realization and the performances of this antenna. This one is easy to make and does not require matching network or balun.
Presse, Anthony, Floc'H, Jean Marie, Tarot, Anne-Claude, Camus, C.   +3 more
openaire   +2 more sources

A Uniplanar Vivaldi Antenna

2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2019
A very wideband uniplanar quasi-Vivaldi antenna is presented. Based on its easy fabrication, low cost, and wideband high gain performance, it appears suitable for imaging and other useful applications. It consists of a coplanar waveguide feed, and a pair Vivaldi patches. It exhibits a 10 dB reflection coefficient bandwidth of 1.9 GHz - 20 GHz.
Jiachen Du, Qingfeng Zhang, Amir Khurrum Rasahid, Xia Fen   +3 more
openaire   +1 more source

Reconfigurable Vivaldi antenna

Microwave and Optical Technology Letters, 2010
AbstractA reconfigurable Vivaldi antenna is presented.It has a capability to operate in a wideband mode (2–8 GHz) and three different sub‐bands (2.5, 5, and 7.5 GHz) by reconfiguring the antenna geometry. The measurement results with ideal switches demonstrate the performances of the proposed designs.
Mohamad R. Hamid, Peter Gardner, Peter S. Hall, Farid Ghanem   +3 more
openaire   +1 more source

Broadband UHF flexible vivaldi antenna

2013 Loughborough Antennas & Propagation Conference (LAPC), 2013
A novel Vivaldi flexible antenna with a -6 dB bandwidth from 150 MHz up to 900 MHz is presented. The whole antenna is realized on a 600 × 600 mm2 silicone foam substrate. In this paper we describe the design, the realization and the performances of this high gain and directive antenna.
Presse, Anthony, Floc'H, Jean Marie, Tarot, Anne-Claude, Camus, C.   +3 more
openaire   +2 more sources

Vivaldi-based UWB Monopulse-Antenna

2010 International ITG Workshop on Smart Antennas (WSA), 2010
This article describes a design of an UWB-Monopulse Antenna. A creation of the sum and difference beams is achieved over the large bandwidth from 3 GHz till 11 GHz. The distribution of the peak value of the impulse response over the angle around the antenna is calculated from the measurements.
Grzegorz Adamiuk, Christoph Heine, Werner Wiesbeck, Thomas Zwick   +3 more
openaire   +1 more source

Gain enhancement of antipodal vivaldi antenna

2018 26th Signal Processing and Communications Applications Conference (SIU), 2018
Due to the broadband requirements in the field of communication, Ultra-Wide Band antennas have become popular nowadays. In this study, an antipodal Vivaldi antenna with UWB and compact design was investigated for X band applications. The antenna features have been developed using Defective Ground Surfaces (DGS) and dielectric lenses.
Mehmet A. Belen, Ilhan O. Evranos, Filiz Günes   +2 more
openaire   +2 more sources