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A novel single-feed circular microstrip antenna with reconfigurable polarization capability
- Authors
- Kim, Boyon; Pan, Bo; Nikolaou, Symeon; Kim, Young-Sik; Papapolymerou, John; Tentzeris, Manos M.
- Issue Date
- 3월-2008
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- circular polarization; linear polarization; microstrip antenna; PIN diode; reconfigurable polarization
- Citation
- IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, v.56, no.3, pp.630 - 638
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
- Volume
- 56
- Number
- 3
- Start Page
- 630
- End Page
- 638
- ISSN
- 0018-926X
- Abstract
- A single-feed circular microstrip antenna with reconfigurable polarization capability is proposed. This antenna has a simple structure, which consists of a radiating circular patch, five switches (PIN diode), three matching stubs, and a 50 Omega microstrip feed line. It can be switched between 4 different states: two states (low-frequency and high-frequency) for linear polarization (LP), one state for left hand circular polarization (LHCP) and one for right hand circular polarization (RHCP) by controlling the bias voltage of two PIN diodes. At the same time, three switchable matching stubs are used for matching every polarization state. Simulation results and experimental results show that the proposed antenna demonstrates a low cross polarization level, good impedance bandwidth, and a very good axial ratio in the circularly polarized states.
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