Compact ridge waveguide filter with parallel and series-coupled resonators

Authors

  • G. Goussetis,

    1. Wireless Communications Research Group, Department of Electronic and Electrical Engineering, Loughborough University, Leicestershire, LE11 3TU, UK
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  • A. P. Feresidis,

    1. Wireless Communications Research Group, Department of Electronic and Electrical Engineering, Loughborough University, Leicestershire, LE11 3TU, UK
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  • D. Budimir,

    1. Wireless Communications Research Group, Department of Electronic Systems, University of Westminster, 115 New Cavendish Street, London, W1M 8JS, UK
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  • J. C. Vardaxoglou

    1. Wireless Communications Research Group, Department of Electronic and Electrical Engineering, Loughborough University, Leicestershire, LE11 3TU, UK
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Abstract

A novel 3rd-order compact E-plane ridge waveguide filter is presented. Miniaturization is achieved upon introducing a configuration of parallel-coupled E-plane ridge waveguide resonators. Furthermore, the proposed filter allows for transmission zeros at finite frequencies. Fabrication simplicity and mass producibility of standard E-plane filters is maintained. The numerical and experimental results are presented to validate the proposed configuration. A miniaturisation factor of 2 and very sharp upper cutoff are achieved. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 23–26, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20711

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