Title :
Effect of a modulated source on a multimode cavity
Author_Institution :
Dept. of Eng. Sci., Oxford Univ., UK
Abstract :
Based on a 3D model, the effect of a modulated source on a multimode cavity has been investigated. It turns out that the amplitude modulated (AM) and the phase modulated (PM) sources cannot perturb the field distribution. Only the frequency modulated (FM) source can achieve this goal. It is also found that the key factor governing the field perturbation does not lie in shifting the eigenfrequencies and the modal variables, but lies in varying the ratios of the modal variables.<>
Keywords :
electromagnetic field theory; frequency modulation; perturbation techniques; 3D model; AM sources; FM sources; amplitude modulated sources; field distribution; field perturbation; frequency modulated sources; modal variables; multimode cavity; phase modulated sources; Amplitude modulation; Apertures; Electromagnetic compatibility; Electromagnetic fields; Electromagnetic heating; Equations; Frequency modulation; Human resource management; Phase modulation; Testing;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
