Summary
International Symposium on Antennas and Propagation
2010
Session Number:3TD4
Session:
Number:3TD4-3
Design and Development of Fork Waveguide Output Multiplexers
Ayesha Kosar Khan, Rabia Nazir, Noor M. Sheikh,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
Among many multiplexer configurations [1], manifold coupled approach is considered to be the optimum choice as far as the miniaturization and absolute insertion loss are concerned. It can be formed in either of the two possible ways i-e star junction multiplexer or manifold-coupled multiplexer. Star junction multiplexer causes power of all channels to be combined at a common junction, possibly causing a hot spot to create. Whereas power in manifold coupled multiplexers evenly distribute throughout the manifold. But tuning can be time consuming and expensive. Manifold coupled approach can only give channel performance that can be achieved using individual channel filter alone. The fork manifold waveguide structure is usually used to achieve this function capability and reduce the insertion loss. This kind of fork waveguide structure is made up of the waveguide T junction, the different length waveguide sections between every two waveguide T junctions, and the different length waveguide section between the waveguide T junction and the path filter. These T junctions can be placed at either of the two possible positions, i-e side parallel or anti-parallel. This paper presents design and development of waveguide manifold multiplexer.