Proposal of simple Reference Antenna Method for EMI antenna calibration

In this paper, a simple Reference Antenna Method is proposed. The main idea is that a information for electric field at receiving gives antenna gains of transmitting antenna. The existing Reference Antenna Method(RAM) or Standard Antenna Method(SAM) have to conduct two measurements with three antennas in order to yield antenna gains or factors. The proposed method needs only one time measurement with two antennas to measure gains of Tx antenna. The reference antenna should be known for its antenna factors or should be possible to measure a electric field at receiving location. Basic expressions for the proposed method from the electric field formula of Tx antenna are derived both in Free space and in Open Area Test Site(OATS) with a conducting plane. Measuring procedure is explained. Calibration results due to the proposed method and SSM are compared. LP antenna knowing its factors and NIST type diode loaded standard dipoles were used as the reference. They respectively measured gains of LP and biconical antenna as AUC. The comparison results between the two methods show good agreement. Measurement uncertainty of the methods is also analyzed.