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Slot-perturbed microstrip antenna for switchable circular polarisation
- Authors
- Pyo, S.; Baik, J. -W.; Kim, Y. -S.
- Issue Date
- 12-5월-2011
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Citation
- ELECTRONICS LETTERS, v.47, no.10, pp.583 - 584
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTRONICS LETTERS
- Volume
- 47
- Number
- 10
- Start Page
- 583
- End Page
- 584
- ISSN
- 0013-5194
- Abstract
- A new microstrip antenna using a slot perturbing method is proposed for switchable circular polarisation. The perturbing structure consists of a centred circular slot with an inner conductor and an outer slot in the square patch radiator. By switching the perturbation geometry from controlling the states of two pin diodes, right-hand circular polarisation and left-hand circular polarisation are alternated without a resonant frequency shifting. Simulated and measured results show that the proposed antenna has remarkable circular polarisation performance with symmetrical radiation characteristics at the resonant frequency.
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