Mobile antenna gain at 900 MHz

A program has been initiated to investigate the effect of the Urban multipath environment on mobile antennas at 900 MHz. The program involves the construction of several mobile antennas, careful measurement of these antennas on an antenna range to determine their characteristics in a controlled environment, then measurement of their characteristics in the multipath environment of cities. Measured results are compared to computed results to permit generalized conclusions to be reached. This paper presents the results of the first phase of the program; measurements made in the controlled pattern range environment.