Design of Waveguide Transition based Six Port Turnstile Junction

In this article, a novel six-port turnstile junction is designed in X and Ka-band for remote sensing satellite earth stations. The futuristic requirements are Ka band (25.5-27 GHz) and X-band (7.75-8.5 GHz). Towards this objective development of Ka-band Turnstile Junction is undertaken. A turnstile is a network with an input and output port for a circular waveguide and on the periphery the four rectangular waveguides for the single-mode. The turnstile junction is used in a microwave component The turnstile junction is designed for X and Ka-band signal extraction. The input port is a common port (X and Ka), the output port is allowing Ka-band signals, and the rectangular ports are extracting the X band signals. The VSWR of the proposed model is less than 1.5 at both bands, which has good impedance matching. The designed six-port turnstile junction is compact in size. The analyzed model is suitable for satellite communications, military communications. The design model is analyzed and simulated using CST software.