A Broadband Conversion Loss Measurement Technique for Terahertz Harmonic Mixers
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916132840013824 |
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| author | Jayasankar, Divya Reck, Theodore Durant, Steven Stake, Jan Hesler, Jeffrey |
| author_facet | Jayasankar, Divya Reck, Theodore Durant, Steven Stake, Jan Hesler, Jeffrey |
| contents | This letter presents an experimental characterization technique for assessing the performance of terahertz harmonic mixers across a wide frequency range. The total signal transfer loss of three mixers was measured in both up- and down-conversion configurations, and the conversion loss was determined through the solution of a linear system of equations. The proposed method uses LO signals with a frequency offset to ensure single sideband measurements, thereby eliminating the need for image-reject filters. The three-mixer method was verified by measurements of millimeter-wave mixers, which matched the traditional characterization method using a calibrated source and power meter. Given this successful millimeter-wave demonstration, we characterized three WM-86 Schottky diode x4-harmonic mixers from 2.2 to 3 THz. This technique presents a notable advantage for conducting broadband mixer characterizations, particularly in the terahertz frequency regime which lacks tunable, wide-band sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_01774 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Broadband Conversion Loss Measurement Technique for Terahertz Harmonic Mixers Jayasankar, Divya Reck, Theodore Durant, Steven Stake, Jan Hesler, Jeffrey Instrumentation and Detectors Optics This letter presents an experimental characterization technique for assessing the performance of terahertz harmonic mixers across a wide frequency range. The total signal transfer loss of three mixers was measured in both up- and down-conversion configurations, and the conversion loss was determined through the solution of a linear system of equations. The proposed method uses LO signals with a frequency offset to ensure single sideband measurements, thereby eliminating the need for image-reject filters. The three-mixer method was verified by measurements of millimeter-wave mixers, which matched the traditional characterization method using a calibrated source and power meter. Given this successful millimeter-wave demonstration, we characterized three WM-86 Schottky diode x4-harmonic mixers from 2.2 to 3 THz. This technique presents a notable advantage for conducting broadband mixer characterizations, particularly in the terahertz frequency regime which lacks tunable, wide-band sources. |
| title | A Broadband Conversion Loss Measurement Technique for Terahertz Harmonic Mixers |
| topic | Instrumentation and Detectors Optics |
| url | https://arxiv.org/abs/2401.01774 |