Design of broadband antenna elements for a low-frequency radio telescope using Pareto genetic algorithm optimization

Details Design of broadband antenna elements for a low-frequency radio telescope using Pareto genetic algorithm optimization Design of broadband antenna elements for a low-frequency radio telescope using Pareto genetic algorithm optimization

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009rasc...44.6006k&link_type=abstract

Radio Science, Volume 44, Issue 6, CiteID RS6006

Astronomy and Astrophysics

Astronomy

2

Electromagnetics: Antennas, Radio Science: Radio Astronomy, Electromagnetics: Numerical Methods

Scientific paper

We apply Pareto genetic algorithm (GA) optimization to the design of antenna elements for use in the Long Wavelength Array (LWA), a large, low-frequency radio telescope currently under development. By manipulating antenna geometry, the Pareto GA simultaneously optimizes the received Galactic background or “sky” noise level and radiation patterns of the antenna over all frequencies. Geometrical constraints are handled explicitly in the GA in order to guarantee the realizability, and to impart control over the monetary cost of the generated designs. The antenna elements considered are broadband planar dipoles arranged horizontally over the ground. It is demonstrated that the Pareto GA approach generates a set of designs, which exhibit a wide range of trade-offs between the two design objectives, and satisfy all constraints. Multiple GA executions are performed to determine how antenna performance trade-offs are affected by different geometrical constraint values, feed impedance values, radiating element shapes and orientations, and ground conditions. Two different planar dipole antenna designs are constructed, and antenna input impedance and sky noise drift scan measurements are performed to validate the results of the GA.

Affiliated with

Also associated with

No associations

Rating

Design of broadband antenna elements for a low-frequency radio telescope using Pareto genetic algorithm optimization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Design of broadband antenna elements for a low-frequency radio telescope using Pareto genetic algorithm optimization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Design of broadband antenna elements for a low-frequency radio telescope using Pareto genetic algorithm optimization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1707761