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Coplanar waveguide-FED planar spiral antenna with integrated impedance transformer

Vahidpoor, Z ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1002/mop.27535
  3. Publisher: 2013
  4. Abstract:
  5. A new planar spiral antenna with integrated impedance transformer is presented which needs no external balun and can be fed by a coplanar waveguide.The proposed structure has a return loss of <-10 dB over a broad bandwidth of 0.5-5 GHz that is suitable for cognitive radio applications. The effects of different spiral and transformer parameters are investigated through various simulations. A case of the proposed antenna is fabricated, and measurement results are presented including return loss, gain, and radiation patterns
  6. Keywords:
  7. Broadband antenna ; Coplanar waveguide ; Impedance transformer ; Spiral antenna ; Balun ; Broad-band antenna ; Coplanar waveguide fed ; Impedance transformers ; Integrated impedance ; Measurement results ; Radio applications ; Transformer parameters ; Coplanar waveguides ; Directional patterns (antenna) ; Spiral antennas ; Antenna feeders
  8. Source: Microwave and Optical Technology Letters ; Volume 55, Issue 6 , 2013 , Pages 1338-1341 ; 08952477 (ISSN)
  9. URL: http://onlinelibrary.wiley.com/doi/10.1002/mop.27535/abstract;jsessionid=3DFDF91EF783438C4CE8F2DCF862881C.f01t01