Inductively loaded and magnetically coupled small antenna with circular polarization

L. Sun, B. Du and B.-H. Sun

Journal of Electromagnetic Waves and Applications, 2013, vol. 27, issue 5, 539-543

Abstract: A magnetically coupled small antenna with circular polarization is presented. The antenna is composed of two orthogonal magnetic dipoles with inductively loaded hats, four capacitively loaded gaps, and a rotated driven semi-loop. Electronically, small size is implemented by employing a new inductively loaded technique. This technique consists of adding short circuited cylindrical covers to extremes of the structure, making the elements be inductively loaded, and as a result, increases the electronic length. The principle of implementing this antenna is presented in an equivalent circuit. An antenna prototype resonating at 1.3218 GHz with size of ( is proposed to verify this method. An effective volume reduction of about 17% is achieved by comparing with the newest published paper.

Date: 2013
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DOI: 10.1080/09205071.2013.756380

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