Policy on Intellectual Property Right (IPR)
1 Introduction
2 Model methodology
2.1 Guidelines on selecting physical
optics-PTD or geometrical optics-GTD
2.2 Analysis of struts
3 Example: Deep space research antenna (DSN
34-m)
3.1 Antenna mechanical parameters
3.2 Model results without struts
3.2.1 Far-field and
near-field of 34-m antenna at 8.425 GHz (no struts)
3.2.2 Far-field and
near-field of 34-m antenna at 32.05 GHz (no struts)
3.2.3 Far-field and
near-field of 34-m antenna at 32.05 GHz with statistical surface distortions
(no struts)
3.3 Model results with struts
3.3.1 Far-field and
near-field of 34-m antenna at 8.425 GHz with struts
3.3.2 Far-field and
near-field of 34-m antenna at 32.05 GHz with struts
4 Example: Radio astronomy antenna (Lovell
Mk 1A)
4.1 Antenna mechanical parameters
4.2 Model results
4.2.1 Far-field and near-field at 150 MHz
4.2.2 Far-field at 5 000 MHz, with and without struts
4.2.3 Far-field at 5 000
MHz, with and without surface distortions
4.2.4 Far-field and
near-field at 5 000 MHz, without struts
4.2.5 Comparison of
measured pattern with model prediction
5 Conclusions