scholarly journals A Wide-Band, Active Antenna System for Long Wavelength Radio Astronomy

2012 ◽  
Vol 124 (920) ◽  
pp. 1090-1104 ◽  
Author(s):  
Brian C. Hicks ◽  
Nagini Paravastu-Dalal ◽  
Kenneth P. Stewart ◽  
William C. Erickson ◽  
Paul S. Ray ◽  
...  
Keyword(s):  
Radio Astronomy ◽  
Wide Band ◽  
Antenna System ◽  
Active Antenna ◽  
Long Wavelength

scholarly journals Development of Wide-Band Planar Active Array Antenna System for Electronic Warfare

2019 ◽  
Vol 30 (6) ◽  
pp. 467-478
Author(s):  
Jae-Duk Kim ◽  
Sang-Wang Cho ◽  
Sam Yeul Choi ◽  
Doo Hwan Kim ◽  
Heui Jun Park ◽  
...  
Keyword(s):  
Wide Band ◽  
Antenna System ◽  
Array Antenna ◽  
Electronic Warfare

scholarly journals Fixed and Mobile RFI Search Facilities at Medicina

2001 ◽  
Vol 196 ◽  
pp. 297-300 ◽  
Author(s):  
S. Montebugnoli ◽  
G. Tomassetti ◽  
C. Bortolotti ◽  
M. Roma
Keyword(s):  
Complex System ◽  
Radio Astronomy ◽  
Wide Band ◽  
Low Noise ◽  
Continuous Mode ◽  
Mobile System ◽  
Receiver System

Fixed and mobile RFI search facilities at the Medicina radio astronomy station are described. A complex system of wide-band antennas that can be steered, has been designed and installed on the top of a 25-m high tower and connected with a wide-band sweeping receiver system. At present it works from 0.08 GHz up to 2.5 GHz in continuous mode. Low-noise front ends are used in the radio astronomy bands. A mobile system, equipped with a similar receiving system, has been designed to facilitate the interfering transmitter's position localization.

scholarly journals Wide-Band High-Gain DGS Antenna System for Indoor Robot Positioning

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Lu Bai ◽  
Chenglie Du
Keyword(s):  
Antenna Array ◽  
Mutual Coupling ◽  
Wide Band ◽  
High Gain ◽  
Antenna System ◽  
Fusion Technology ◽  
Positioning Systems ◽  
Signal Fusion ◽  
Wireless Signal ◽  
Robot Positioning

Based on multisource wireless signal fusion technology, the autonomous positioning systems of robots have been widely employed. How to design a compact compostable antenna array for indoor robot positioning is still a problem. In this study, we proposed a compact ultrathin antenna unit that effectively reduces the mutual coupling between any adjacent units, while covering most of the existing communication bands, including 2G/3G/4G/Wi-Fi, which will greatly reduce the size of the positioning antenna array. The proposed antenna system has been employed for positioning purpose with high-gain, wide-frequency band and limited size. It necessarily improves the accuracy of positioning signal from various unknown sources and finally accomplishes its autonomous positioning function.

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