New type of turnstile antenna

The paper presents a new type of turnstile antenna realized with two crossed dipoles parallelly connected. Feeding of the dipoles in phase quadrature to obtain omnidirectional radiation pattern is achieved by optimizing their impedances to be complex-conjugated. Dipoles are realized with aluminum strips. Bal-un - transition from the antenna to coaxial cable - is accomplished with concentrated parameters - two capacitors and two inductors. Presented concept of the turnstile antenna can be used in VHF and UHF frequency ranges. Measured results show very good agreement with those obtained by simulation. The antenna is also characterized by simple manufacturing and low cost.