안테나 측정 환경 구축에 관한 연구

Abstract

In this thesis, a program was presented for antenna measurement with GUI technique. In order to obtain the accuracy of measurement results and the reduction of the measurement time, the measurement equipments are automatically controlled by a proposed program. These equipments are connected by GPIB cable. The measured data are also normalized automatically by the proposed program. This software provides visually the measured results such as a normalized radiation pattern and antenna gain. As a result, It was confirmed that, the proposed antenna measurement program showed a good performance.

In addition, measurement results of sonobuoy transmitter was presented as an example of antenna measurement. A measurement program for sonobuoy transmitter using GUI technique was developed, because sonobuoy transmitter should keep the strict military specification. This program offers automatic normalization of measured data and shortens measurement time. In Addition, the SWR and the radiation patterns and characteristics of sonobuoy transmitter were measured and estimated. Also the drop out, power density and spurious radiation of sonobuoy transmitter were measured and estimated. As a result, sonobuoy transmitter satisfied the military specification and it showed a good performance.