scholarly journals Low-frequency array active-antenna system

2000 ◽  
Author(s):  
Gie H. Tan ◽  
Christof H. Rohner
Keyword(s):  
Low Frequency ◽  
Antenna System ◽  
Active Antenna

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

A Convenient Designing Method of Feed Network at Low Frequency - The Substructure Method

2010 ◽  
Vol 29-32 ◽  
pp. 884-889
Author(s):  
Hua Wei Zhan ◽  
Cai Xia Guo ◽  
Yu Zhang ◽  
Yun Zhou
Keyword(s):  
Network Optimization ◽  
Low Frequency ◽  
Antenna System ◽  
Substructure Method ◽  
Feed Network ◽  
Cascade Method ◽  
Designing Method ◽  
Multi Mode

Multimode feed network is an important part of shortwave multimode multifeed antenna system. The design of feed network is a pivotal technique in the process of projecting antenna system. The substructure analyzing method of interconnect-net is based on the substructure matrix database which is formed by converting the net parameters into data. And it characterizes the non-uniform net units through the database directly. Then cascades the known database of the net units by means of ordinary net cascade method, thus performing optimization in the net. In the paper, the Substructure Analyzing Method of Interconnect-net is applied to designing multi-mode multi-feed network, a typical example of multi-mode multi-feed network optimization is given to illustrate the efficiency of the method.

scholarly journals A Large Decametric Wavelength Antenna Array for IPS Observations of Radio Sources

1980 ◽  
Vol 91 ◽  
pp. 403-403
Author(s):  
Ch. V. Sastry
Keyword(s):  
Solar Wind ◽  
Antenna Array ◽  
Low Frequency ◽  
Antenna System ◽  
Radio Sources ◽  
The Sun ◽  
Low Frequencies ◽  
Interplanetary Scintillations

Most observations of interplanetary scintillations of radio sources are made at frequencies around 80 MHz. These observations are limited to regions close to the sun, where the scintillations are maximum at this frequency. It is possible to extend these observations to the weakly scattering regions beyond 1 A.U. by making measurements at low frequencies. We have built a low frequency antenna system at Gauribidanur, India (Lat. 13° 36′ N and Long. 5 hrs. 10 min.), which can be used for this purpose. Although this system will not be dedicated to IPS, we intend to use it exclusively for solar wind observations during periods of interest.

Sensitivity of an Active Antenna Array Element for the Low-Frequency Radio Telescope GURT

2017 ◽  
Vol 65 (9) ◽  
pp. 4636-4644 ◽  
Author(s):  
Peter L. Tokarsky ◽  
Alexander A. Konovalenko ◽  
Serge N. Yerin
Keyword(s):  
Antenna Array ◽  
Radio Telescope ◽  
Low Frequency ◽  
Array Element ◽  
Active Antenna
Sign in / Sign up

Export Citation Format

Share Document