Dual-Tone Modulation and Nonlinearities to Extend the Bandwidth of Electrically Small Antennas

Electrically small antennas suffer from a well-known trade-off between bandwidth, gain and size compared to the operation wavelength, known as the Chu-Harrington limit. For this reason, antenna miniaturization remains a major challenge in modern wireless communication systems. Approaches involving a...

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Bibliographic Details
Published in2024 IEEE INC-USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) p. 135
Main Authors Mekkawy, Ahmed, Xu, Gengyu, Arora, Akshaj, Kasahara, Yoshiaki, Liu, Changhao, Sounas, Dimitrios, Ranzani, Leonardo, Alu, Andrea
Format Conference Proceeding
LanguageEnglish
Published ITNC-USNC URSI 14.07.2024
Subjects
Antennas
Bandwidth
Conferences
Modulation
Noise
Wireless communication
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Summary:Electrically small antennas suffer from a well-known trade-off between bandwidth, gain and size compared to the operation wavelength, known as the Chu-Harrington limit. For this reason, antenna miniaturization remains a major challenge in modern wireless communication systems. Approaches involving active loads have been pursued, but typically trading bandwidth enhancements with unwanted nonlinearities and noise. In this work, we provide an overview of our recent efforts at overcoming these limits by leveraging time modulations in the matching network of electrically small antennas, or by introducing tailored nonlinearities within the same matching network to use the input signal as a way to self-modulate the antenna.
ISSN:2573-3036
DOI:10.23919/INC-USNC-URSI61303.2024.10632541