Results 1 to 10 of about 36,878 (167)

Hybrid-decoupling-based shared-aperture phased array antenna for Ku/Ka-band with low profile, wide-angle scanning and high isolation [PDF]

Scientific Reports
This paper presents a low-profile Ku/Ka dual-band shared-aperture phased array antenna (SAPAA) that addresses conventional limitations in profile height, port isolation, and scanning angles through a hybrid-decoupling approach combining array decoupling ...
Wenxuan Xie, Changlin Li, Yongzhong Zhu, Yunxue Xu, Bao Xiong   +4 more
doaj   +2 more sources

A Spaceborne Integrated S/Ka Dual-Band Dual-Reflector Antenna [PDF]

Micromachines
To address the diverse requirements of satellite communication applications involving medium-/low-rate reliable links and high-rate high-capacity services, an integrated S/Ka dual-band dual-reflector antenna is proposed as an effective solution. Owing to
Zenan Yang, Weiqiang Han, Liang Tang, Haihua Wang, Yilin Wang, Yongchang Jiao   +5 more
doaj   +2 more sources

Compact Dual Band Feed System for a Multifrequency Atmospheric Radar

IEEE Open Journal of Antennas and Propagation, 2022
The design, simulations and measurement results of a dual frequency feed horn operating at 35.75 GHz (Ka-band) and 94.05 GHz (W-band) are presented. The horn is designed to be used as a feed for a multifrequency atmospheric radar.
Srinivas Nagaraja, Paolo Focardi, Raquel Rodriguez Monje, Richard Cofield   +3 more
doaj   +1 more source

Performance Analysis of Ku/Ka Dual-Band SAR Altimeter from an Airborne Experiment over South China Sea

Remote Sensing, 2022
Satellite radar altimeters have been successfully used for sea surface height (SSH) measurement for decades, gaining great insight in oceanography, meteorology, marine geology, etc.
Xiaonan Liu, Weiya Kong, Hanwei Sun, Yaobing Lu   +3 more
doaj   +1 more source

Simulated Ka- and Ku-band radar altimeter height and freeboard estimation on snow-covered Arctic sea ice [PDF]

The Cryosphere, 2021
Owing to differing and complex snow geophysical properties, radar waves of different wavelengths undergo variable penetration through snow-covered sea ice.
R. T. Tonboe, V. Nandan, V. Nandan, J. Yackel, S. Kern, L. T. Pedersen, J. Stroeve, J. Stroeve   +7 more
doaj   +1 more source

A Microwave/Millimeter Wave Dual-Band Shared Aperture Patch Antenna Array

IEEE Access, 2020
This paper describes the design of microwave/millimeter wave dual-band patch antenna array with shared aperture. The antenna array is designed of stack structure of three printed circuit boards.
Zongxin Wang, Zeqin Huang
doaj   +1 more source

Wind Speed Retrieval Using Global Precipitation Measurement Dual-Frequency Precipitation Radar Ka-Band Data at Low Incidence Angles

Remote Sensing, 2022
In this study, sea surface wind speed was retrieved using the Global Precipitation Measurement (GPM) dual-frequency precipitation radar (DPR) Ka-band data. In order to establish the Ka-band model at low incidence angles, the dependence of the DPR Ka-band
Chong Jiang, Lin Ren, Jingsong Yang, Qing Xu, Jinyuan Dai   +4 more
doaj   +1 more source

Design of Ka Band Bandpass Filter Based on Radial Stub

Taiyuan Ligong Daxue xuebao, 2023
Purposes In communication systems, filters play an important role in filtering out-of-band signals. For the traditional parallel coupled line filter and clip line filter, the size is large and the parasitic pass band problems exist.
Na WANG, Rundong JIANG, Peng HAN, Jinjie YAO, Xue ZHAO, Ruipeng PAN   +5 more
doaj   +1 more source

A X-/Ka-Band Linearly Polarized Low Profile Shared-Aperture Antenna Array for Satellite Applications

IEEE Access, 2022
An $X- / Ka$ -band shared aperture scanning antenna array for satellite applications is proposed. The Ka-band antenna array consists of 8 $\times $ 8 antenna elements in a triangular grid, while the X-band antenna array consists of $4\times $ 4 ...
Yong Yang, Yong-Ling Ban, Qiang Sun, Chow-Yen-Desmond Sim   +3 more
doaj   +1 more source

Ku- and Ka-Band Ocean Surface Radar Backscatter Model Functions at Low-Incidence Angles Using Full-Swath GPM DPR Data

Remote Sensing, 2021
This paper presents the results of the first characterization of coincident Ku- and Ka-band ocean surface normalized radar cross section measurements at earth incidence angles 0°–18° using one year of wide swath Global Precipitation Measurement (GPM ...
Alamgir Hossan, William Linwood Jones
doaj   +1 more source