Tunable Uhf Origami Spring Antenna With Actuation System

A tunable UHF origami paper based antenna is presented in this paper. The antenna is built based on the origami spring structure which can be physically adjusted. The reflection coefficient, gain and polarization of this antenna are investigated over a wide frequency band. The radiation patterns of this antenna are also examined. The proposed design of the antenna is verified by both simulations and measurements with a fabricated prototype. An actuation system is designed, which can change the total height of the antenna from 60 mm to 145 mm.