Connector Induced Effect on Small Antenna Design

For a small antenna, the uncertainty of connector may affect the performance when their dimensions are competitive. In this paper, an end-fired pattern circular polarization antenna consists of an SIW-based aperture antenna and a stub-loaded dipole antenna is designed and employed to analyze the effect caused by a connector. The electrical field is interfered and affect the radiation pattern on both XY and XZ plane when the connector is presented. And, a measurement is made and shows the result that is consistent with the simulation. The results presented in this paper is contributed to simulate the connector effect and makes the accurate design of small antenna.