Abstract: A miniaturized VHF omnidirectional antenna based on frequency reconfigurable technology and adopting a monopole form is designed aiming at the development trend of miniaturization of VHF communication equipment.The high frequency current distribution is controled by loading inductive coil, so as to improve the high frequency radiation performance of the antenna. At the same time, the reconfigurable control circuit and LC broadband matching network are innovatively introduced, and the RF switch is utilized for fast switching, which realizes good impedance tuning matching in the frequency band of 30~512 MHz, and the height of the antenna is only 0.6 m, and the radiation performance is significantly better than that of the traditional 1.3 m broadband antenna. The antenna is used in conjunction with the ultra-shortwave radio to realize the frequency hopping and spreading communication with the advantages of miniaturization, high gain, adaptive tuning, etc.This study provides a brand new design idea for the design of the matching antenna of the next-generation wide-band software wireless portable radio.