Results 41 to 50 of about 36,878 (167)

A S/K/Ka Triple-Band Shared-Aperture Antenna Hybridizing Monopole Array and Transmitarray

IEEE Open Journal of Antennas and Propagation
This paper presents a triple-band shared-aperture antenna operating in the S-, K-, and Ka-bands. The antenna is based on a modified transmitarray antenna (TA) where a $2\times 2$ monopole array (MA) is integrated into its transmitting surface (TS).
Zi Long Ma, Yang Li Geng
doaj   +1 more source

High Efficiency Ka-Band Spatial Combiner

Advanced Electromagnetics, 2014
A Ka-Band, High Efficiency, Small Size Spatial Combiner (SPC) is proposed in this paper, which uses an innovatively matched quadruple Fin Lines to microstrip (FLuS) transitions.
D. Passi, A. Leggieri, F. Di Paolo, M. Bartocci, A. Tafuto, A. Manna   +5 more
doaj   +1 more source

One-channel Ka-band pulse compressor

Physical Review Special Topics. Accelerators and Beams, 2007
A compact rf pulse compressor, fed by a phase-modulated pulse, is described for producing high-power flattop pulses at Ka-band. The compressor consists of a single axisymmetrical cavity operating in a combination of TE_{0n} modes (n=1, 2, 3), that have ...
S. V. Kuzikov, A. A. Vikharev, M. E. Plotkin, D. Yu. Shegol’kov, J. L. Hirshfield   +4 more
doaj   +1 more source

Temporal behavior of major crops with SWOT Ka-band SAR observations

GIScience & Remote Sensing
Accurate monitoring of crop development is critical for understanding production drivers and implementing effective agricultural policies. In this study, we propose a novel application of the surface water and ocean topography (SWOT) Ka-band synthetic ...
Henri Bazzi, Nicolas Baghdadi, Cecile Cazals, Saeideh Maleki, Mehrez Zribi, Frédéric Frappart   +5 more
doaj   +1 more source

A CPW-fed Sigma-shaped MIMO Antenna for Ka Band and 5G Communication Applications

Journal of Telecommunications and Information Technology, 2018
This article presents a MIMO compact antenna measuring 45×45×1.6 mm, on the FR4 substrate, proposed for Ka band and 5G communication applications. The proposed design is suitable to overcome the issues connected with massive MIMO.
B. T. P. Madhav, G. Jyothsna Devi, Papula Lakshman, T. Anilkumar   +3 more
doaj   +1 more source

Improvement of Ka-band satellite link availability for real-time IP-based video contribution

ICT Express, 2017
New High Throughput Satellite (HTS) systems allow high throughput IP uplinks/contribution at Ka-band frequencies for relatively lower costs when compared to broadcasting satellite uplinks at Ku band.
G. Berretta, P. Dvorak, M. Luglio, L. Luini, C. Riva, C. Roseti, F. Zampognaro   +6 more
doaj   +1 more source

Partially Observable Markov Decision Process-Based Transmission Policy over Ka-Band Channels for Space Information Networks

Entropy, 2017
The Ka-band and higher Q/V band channels can provide an appealing capacity for the future deep-space communications and Space Information Networks (SIN), which are viewed as a primary solution to satisfy the increasing demands for high data rate services.
Jian Jiao, Xindong Sui, Shushi Gu, Shaohua Wu, Qinyu Zhang   +4 more
doaj   +1 more source

Ka-band miniaturized airtight wideband power amplifier

Dianzi Jishu Yingyong
This paper introduces an engineering realization of a Ka-band miniaturized airtight wideband power amplifier. Using 16 GaN power chips and 1 GaAs driver chip, the power is synthesized by combining a microstrip ring power divider/combiner with waveguide ...
Zhao Peng, Li Kai, Hu Shunyong, Zhang Nengbo   +3 more
doaj   +1 more source

EXPERIMENTAL KA-BAND GROUND-BASED SAR SYSTEM

Radio Physics and Radio Astronomy, 2015
An experimental ground-based synthetic aperture radar (GB-SAR) system operating at Ka-band has been developed. The system is designed to be operated from a top a hill or from a building roof, etc. for imaging the underlying ground terrain.
O. O. Bezvesilniy, D. M. Vavriv, V. A. Volkov, A. A. Kravtsov, E. V. Bulakh, V. V. Vinogradov, S. S. Sekretarov   +6 more
doaj   +1 more source

Quad Element MIMO Antenna for C, X, Ku, and Ka-Band Applications. [PDF]

Sensors (Basel), 2023
Mistri RK, Mahto SK, Singh AK, Sinha R, Al-Gburi AJA, Alghamdi TAH, Alathbah M.   +6 more
europepmc   +1 more source