본 논문에서는 2.4GHz(ISM) 대역의 블루투스 시스템에 사용되는 역-F형 내부 안테나의 설계 파라미터 값에 따른 안테나 특성을 분석하였다. PCB 기판에 인쇄된 형태로 설계하여 안테나의 길이, 단락 스터브의 두께, 피드선과 단락 스터브 사이의 간격, 안테나와 접지면 사이의 간격, 안테나의 두께 및 기판의 두께와 기판의 유전율에 따른 특성 변화를 연구하였다. 설계 값에 따른 특성 변화로부터 설계 파라미터값을 튜닝하여 최적의 안테나를 설계하는 방법을 보였다. 설계된 안테나는 VSWR이 1.5이하인 주파수 대역폭이 6.3%(150MHz)였으며, 이득은 3dBi 정도를 얻었다.

This thesis describes the design of a stabilized algorithm for shipboard satellite antenna systems which can enhance the tracking performance. In order to overcome some drawbacks of the conventional step tracking algorithm, the proposed algorithm searches for the best tracking angles using gradient-based formulae and signal intensities measured according to a search pattern. The effectiveness of the proposed algorithm is demonstrated through simulation using real-world data.

In this paper, we simulated a radiation pattern directivity of microstrip patch antenna for 9[GHz] using the computer. It is analyzed and compared the directivity of field characteristics at two different aspects. One is that of 1-dimension and 2-dimension array, the other is that of a linear and planar array antenna. We tried the constants for the simulation of teflon substrate, dielectric constant εr=2.50, ground plane conductor thickness t=0.03556, substrate height h=0.72188, dielectric loss degree tanδ=0.00085, characteristics impedence of line Zo=50(Ω). The major advantage of microstrip patch antenna is that the arrangement of antenna is associated with the directivity and effectiveness. We have been studied the difference of the radiation pattern of antenna with wave variety through computer simulation.