CPW-FED SMALL SLOT ANTENNA WITH RECONFIGURABLE CIRCULAR POLARIZION AND IMPDEANCE BANDWIDTH CHARACTERISTCIS FOR DCS/WIMAX APPLICATIONS | Zendy

A. Valizade | Zendy; Mohammad Ojaroudi | Zendy; Nasser Ojaroudi | Zendy

Open Access

CPW-FED SMALL SLOT ANTENNA WITH RECONFIGURABLE CIRCULAR POLARIZION AND IMPDEANCE BANDWIDTH CHARACTERISTCIS FOR DCS/WIMAX APPLICATIONS

Author(s) -

A. Valizade,

Mohammad Ojaroudi,

Nasser Ojaroudi

Publication year - 2015

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc14122901

Subject(s) - stub (electronics) , circular polarization , wimax , ground plane , reconfigurable antenna , multi band device , pin diode , helical antenna , optics , axial ratio , physics , electrical engineering , slot antenna , radiation pattern , engineering , antenna (radio) , coaxial antenna , telecommunications , diode , microstrip , wireless

A novel printed reconfigurable square slot antenna with switchable right/left-handed circular-polarization (CP) and switchable dual-band performances for use in DCS/WiMAX applications is designed and manufactured. In the proposed antenna, in order to create a reconfigurable structure with switchable dual-band performance, a meander-line shaped radiating stub is utilized. This radiating stub can select between two operating frequency bands with respect to the number of its steps, and also right- or left-handed circular polarization at one of the operating bands (WiMAX) is determined by the growth direction of this meander-line structure. Moreover, through embedding an L-shaped slot on the ground section, circular polarization can be provided for the other operating frequency band (DCS). Having right- or left-handed circular polarization at this frequency band can be determined by the location and orientation of the L-shaped slot on the ground plane. In order to achieve a reconfigurable antenna structure with simultaneous switchable dual-band and circular polarization functions, six PIN diodes were utilized. The designed antenna has a small size of 30× 30 mm. Simulated and experimental results obtained for the designed antenna reveal good radiation behavior within the DCS (1.85 GHz) and WiMAX (3.5 GHz) frequency ranges.

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