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Terahertz coherent oscillator integrated with slot-ring antenna using two resonant tunneling diodes
The development of compact, high-output-power electronic terahertz sources will benefit from coherent combination of power from multiple oscillators. Mutual coupling for power combining and linewidth narrowing generally requires additional, potentially lossy coupling structures that limit array scal...
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Published in: | Applied physics express 2021-03, Vol.14 (3), p.34001 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The development of compact, high-output-power electronic terahertz sources will benefit from coherent combination of power from multiple oscillators. Mutual coupling for power combining and linewidth narrowing generally requires additional, potentially lossy coupling structures that limit array scalability. To address this limitation, two resonant tunneling diode (RTD) oscillators integrated within a single slot-ring antenna are herein proposed. They employ an innate phase-locking mechanism, thereby realizing mutual-coupling and radiation simultaneously. The proposed double-RTD device is experimentally found to demonstrate a single-peak oscillation at 354 GHz with narrow linewidth (2 MHz), higher output power (31 W), and linearly polarized, unimodal radiation pattern. |
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ISSN: | 1882-0778 1882-0786 |
DOI: | 10.35848/1882-0786/abdb8f |