A new electronically steerable 1056 dipole array at 327 MHz for the Ooty radio telescope

Details A new electronically steerable 1056 dipole array at 327 MHz for the Ooty radio telescope A new electronically steerable 1056 dipole array at 327 MHz for the Ooty radio telescope

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988basi...16..111j&link_type=abstract

Astronomical Society of India, Bulletin (ISSN 0304-9523), vol. 16, June-Sept. 1988, p. 111-121.

Astronomy and Astrophysics

Astronomy

4

Cylindrical Antennas, Linear Arrays, Parabolic Antennas, Phased Arrays, Radio Telescopes, Steerable Antennas, Phase Shift, Reflectors, Signal To Noise Ratios

Scientific paper

The electronically steerable 1056-element linear dipole array installed on the Ooty radio telescope in 1982 is described. The colinear dipole array consists of 22 subarrays of 48 dipole each and employs a low loss (about 0.6 dB) 4-bit PIN diode phase-shifter, after each dipole, for steering the telescope beam in declination. The phase-shifters are controlled by a computer and transistor drivers. The maximum VSWR at the input of any dipole is not above 2 over a scan range of + or - 40 deg, and the frequency range of + or - 6 MHz.

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