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    Wide Band Switched Delay Line using MEMS Switches


    Ibrahim, Sarah and Szczepkowski, Grzegorz and Farrell, Ronan (2014) Wide Band Switched Delay Line using MEMS Switches. Proceedings of the 17th Research Colloquium on Communications and Radio Science into the 21st Century.

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    Abstract

    This paper presents a high precision wide band switched delay line with fine tuning capability and low insertion loss. The circuit is designed to operate in the frequency range from 1 GHz to 5 GHz and tuned using MEMS switches targeting a minimum delay step of 7 ps. The delay line uses a single layer of a high permittivity substrate ("r =10), and the MEMS devices are interconnected using conventional coplanar waveguide technology (CPW). The circuit was designed and simulated using CST Microwave Studio. The simulated group delay shows a small deviation from the linear phase of less than 1o over a wide bandwidth compared to the performance of SAW and ceramic filters [1]. The simulation results shows an insertion loss and a return loss of better than 1 dB and 20 dB respectively.

    Item Type: Article
    Keywords: Switched delay line; MEMS switches; Wide band RF;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Item ID: 4962
    Depositing User: Dr. Ronan Farrell
    Date Deposited: 19 May 2014 10:19
    Journal or Publication Title: Proceedings of the 17th Research Colloquium on Communications and Radio Science into the 21st Century
    Publisher: Royal Irish Academy
    Refereed: Yes
    Funders: Science Foundation Ireland under Grant No. 10/CE/I1853
    URI:

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