Radiated Power Evaluation of Simulated Radio Equipment Using Equi-Spaced-Points-Method

In 2003, a method of measurement for radiated RF power and receiver performance was proposed by CTIA. In the certification [1], it is recommended that radiation characteristics in real operative state should be evaluated. Although maximal EIRP has been used to obtain radiated power of radio equipments, it cannot always indicate their performance in real operative state. Therefore, CTIA certification [1] describes that total radiation power (TRP), which is radiated by radio equipment, should be measured to evaluate transmitter performance. As shown in Fig. 1, a given radio equipment is located near the origin of the spherical coordinate system. As EIRP does not depend upon the distance, , in the far-field region, TRP is evaluated by integrating the sum of EIRPs for vertical and horizontal polarizations, EIRP , EIRP , EIRP , , over the entire unit spherical surface [1][2].