| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10681376 | Aerospace Science and Technology | 2005 | 9 Pages |
Abstract
The electromagnetic compatibility (EMC) problem of high altitude platform systems (HAPS) is investigated in this paper. A physical model for electromagnetic interferences (EMI) of electromagnetic radiation of spark discharge in DC electric motor is proposed. Based on this model, EMI frequency points has been estimated by approximative equation for the given structure and size of a motor, and EMI frequency points, peak values that received by the ports of antennas and far-field pattern have been calculated. The estimated results are consistent with the calculated ones. These frequency bands and spatial directions with max EMI should be avoided in the valid information when the HAPS system is being designed. Two methods are taken to shield electromagnetic radiation, either to mount a metal plate near the DC electric motor (EMI source), or to mount a perfect conductor board near the antenna array (sensitive element), are valid to shield electromagnetic radiation, but to mount a metal plate near the EMI source is more effective.
Related Topics
Physical Sciences and Engineering
Engineering
Aerospace Engineering
Authors
Junping Geng, Ronghong Jin, Yu Fan, Bo Liu, Jiaqiang Li, Yuebo Cheng, Zhongyuan Wang,