An analog phase shifter is designed at the operating frequency 10GHz that is coupled with a hybrid ring and the network connecting an inductor series with a varactor to extend a continuous chage in the phase of the reflected output wave to be produced from a variation in the terminated varactor reactance as a variation in the reverse bias voltage. It is manufactured in a microstripline in consideration of an effect of the dispersion characteristics and discontinuities. As a resuls of an experiment, a change in the phase is achieved over 180 degree from $52.34^{circ}$ degrees to $235.01^{circ}$degrees, the transmission loss is -3.6~-14.3dB, and the return loss is -16~-8dB(1.37<VSWR<2.3) as a variation in the reverse bias voltage up to -20V.