Finite-difference time-domain modeling of a corrugated horn antenna as a radar system feed

✍ Scribed by Nader Farahat; Raj Mittra; Jose Carrion

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 506 KB
• Volume: 47
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.21176

✦ Synopsis

As can be seen, there is good agreement between the simulated and experimental results.

Figure 7 shows the experimental and the simulated responses for the four-pole filter. From the figure, it can be seen that also very good agreement was achieved between simulated and measured results. The measured insertion loss is Ϫ6 dB, and the return loss is better than Ϫ16 dB throughout the band. The center frequency was measured to be 1.07 GHz.

CONCLUSION

A miniature novel dual-mode resonator with low sensitivity to substrate thickness has been demonstrated. This resonator adds interdigital capacitors to the conventional ring resonator, thus achieving lower sensitivity to substrate thickness and reduction of size. Two filters, a two-pole filter and a four-pole filter, with respective 1% and 2.2% frequency bandwidths were successfully built and tested using this resonator. Good agreement between the simulated results and the experimental results was obtained.