IDEAS home Printed from https://ideas.repec.org/a/taf/tewaxx/v27y2013i5p659-669.html
   My bibliography  Save this article

An investigation of novel capacitor-based coupling scheme and its applications to microstrip bandpass filters

Author

Listed:
  • Y.-L. Lu
  • G.-L. Dai

Abstract

In this paper, we present a novel capacitor-based coupling scheme for realizing both harmonic-suppressed and miniaturized microstrip bandpass filters. The proposed coupling scheme employs lumped-/distributed-capacitors to provide the desired coupling strength between the resonance elements instead of traditional parallel-coupled lines. Certain coupling regions are replaced by coupling points resulting in high freedom degree of the filter topologies. Thus, the filter structure can be effectively miniaturized by meandering microstrip lines. To investigate the properties of the novel coupling scheme, an analytical equation is derived for describing the coupling coefficient variation vs. the positions of coupling points and the values of coupled-capacitors. Theoretical analysis indicates that several zero-voltage points can be chosen to suppress the harmonics, and the coupling coefficient can be easily tuned in a wide range by adjusting the capacitance of the coupled-capacitor. For demonstration, two sample filters are designed and fabricated. Simulation and experimental results agree well, validating the proposed methodologies.

Suggested Citation

  • Y.-L. Lu & G.-L. Dai, 2013. "An investigation of novel capacitor-based coupling scheme and its applications to microstrip bandpass filters," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 27(5), pages 659-669, March.
    • Handle: RePEc:taf:tewaxx:v:27:y:2013:i:5:p:659-669
    DOI: 10.1080/09205071.2013.761120
    as

    Download full text from publisher

    File URL: http://hdl.handle.net/10.1080/09205071.2013.761120
    Download Restriction: Access to full text is restricted to subscribers.
    File URL: https://libkey.io/10.1080/09205071.2013.761120?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:taf:tewaxx:v:27:y:2013:i:5:p:659-669. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Chris Longhurst (email available below). General contact details of provider: http://www.tandfonline.com/tewa .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.