Mixtenna: A Self-Biased Nonlinear Patch Antenna for Passive Third-Harmonic Radiation
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866917209462276096 |
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| author | Brill, Yishai Hadad, Yakir |
| author_facet | Brill, Yishai Hadad, Yakir |
| contents | A nonlinear rectangular patch antenna (RPA) is presented in which back-to-back Schottky diodes are embedded at high-field regions to enable passive, bias-free harmonic generation. The self-biased diodes introduce a power-dependent impedance that drives efficient frequency up-conversion and selective third-harmonic radiation. A tailored matching network enhances third-harmonic excitation and coupling while preserving radiation efficiency at the fundamental frequency. Analytical modeling combined with SPICE-assisted full-wave time-domain simulations predicts strong odd-harmonic content, and measurements on RPA prototypes employing SMS7630 diodes confirm these results. Simulated and measured S-parameters and far-field patterns at 925 MHz and 2.775 GHz show excellent agreement. The demonstrated approach establishes nonlinear loading as an effective mechanism for passive harmonic control in compact radiators, enabling frequency-agile and spectrum-efficient antenna systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_12462 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Mixtenna: A Self-Biased Nonlinear Patch Antenna for Passive Third-Harmonic Radiation Brill, Yishai Hadad, Yakir Optics Applied Physics A nonlinear rectangular patch antenna (RPA) is presented in which back-to-back Schottky diodes are embedded at high-field regions to enable passive, bias-free harmonic generation. The self-biased diodes introduce a power-dependent impedance that drives efficient frequency up-conversion and selective third-harmonic radiation. A tailored matching network enhances third-harmonic excitation and coupling while preserving radiation efficiency at the fundamental frequency. Analytical modeling combined with SPICE-assisted full-wave time-domain simulations predicts strong odd-harmonic content, and measurements on RPA prototypes employing SMS7630 diodes confirm these results. Simulated and measured S-parameters and far-field patterns at 925 MHz and 2.775 GHz show excellent agreement. The demonstrated approach establishes nonlinear loading as an effective mechanism for passive harmonic control in compact radiators, enabling frequency-agile and spectrum-efficient antenna systems. |
| title | Mixtenna: A Self-Biased Nonlinear Patch Antenna for Passive Third-Harmonic Radiation |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2601.12462 |