Abstract:
This communication presents a reconfigurable antenna capable of independently reconfiguring the operating frequency, radiation pattern and polarization. A switched grid o...Show MoreMetadata
Abstract:
This communication presents a reconfigurable antenna capable of independently reconfiguring the operating frequency, radiation pattern and polarization. A switched grid of small metallic patches, known as pixel surface, is used as a parasitic layer to provide reconfiguration capabilities to existing antennas acting as driven element. The parasitic pixel layer presents advantages such as low profile, integrability and cost-effective fabrication. A fully operational prototype has been designed, fabricated and its compound reconfiguration capabilities have been characterized. The prototype combines a patch antenna and a parasitic pixel surface consisting of 6 × 6 pixels, with an overall size of 0.6 λ×0.6 λ and 60 PIN-diode switches. The antenna simultaneously tunes its operation frequency over a 25% frequency range, steers the radiation beam over ±30° in E and H-planes, and switches between four different polarizations (x̂, ŷ, LHCP, RHCP). The average antenna gain among the different parameter combinations is 4 dB, reaching 6-7 dB for the most advantageous combinations. The distance between the driven and the parasitic layers determines the tradeoff between frequency tuning range (12% to 25%) and radiation efficiency (45% to 55%).
Published in: IEEE Transactions on Antennas and Propagation ( Volume: 62, Issue: 6, June 2014)
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- IEEE Keywords
- Index Terms
- Radiation Pattern ,
- Reconfigurable Antenna ,
- Pixel Layer ,
- Frequency Reconfigurable Antenna ,
- Polarization Reconfigurable ,
- Polarization Reconfigurable Antenna ,
- Prototype ,
- Frequency Range ,
- Operating Frequency ,
- Average Gain ,
- Antenna Gain ,
- Tuning Range ,
- Frequency Tuning ,
- Patch Antenna ,
- Parasite Surface ,
- PIN Diodes ,
- Lower Frequency ,
- Resonance Frequency ,
- Highest Frequency ,
- Number Of Configurations ,
- Number Of Switches ,
- Linearly Polarized ,
- Xz Plane ,
- Antenna Radiation Pattern ,
- Polarization Efficiency ,
- Reflection Coefficient ,
- Radiative Properties ,
- Polarization Of Radiation ,
- Microstrip Patch
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Radiation Pattern ,
- Reconfigurable Antenna ,
- Pixel Layer ,
- Frequency Reconfigurable Antenna ,
- Polarization Reconfigurable ,
- Polarization Reconfigurable Antenna ,
- Prototype ,
- Frequency Range ,
- Operating Frequency ,
- Average Gain ,
- Antenna Gain ,
- Tuning Range ,
- Frequency Tuning ,
- Patch Antenna ,
- Parasite Surface ,
- PIN Diodes ,
- Lower Frequency ,
- Resonance Frequency ,
- Highest Frequency ,
- Number Of Configurations ,
- Number Of Switches ,
- Linearly Polarized ,
- Xz Plane ,
- Antenna Radiation Pattern ,
- Polarization Efficiency ,
- Reflection Coefficient ,
- Radiative Properties ,
- Polarization Of Radiation ,
- Microstrip Patch
- Author Keywords