Optimization-Based Behavioral Modeling of Mixers for Frequency Comb OFDM Radar Processing
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arXiv
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| Auteurs principaux: | , , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866911473722195968 |
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| author | Erdem, Umut Utku Poensgen, Henning Jeong, Taewon Giroto, Lucas Nuss, Benjamin Aksoyak, Ibrahim Kagan Ulusoy, Ahmet Cagri Zwick, Thomas |
| author_facet | Erdem, Umut Utku Poensgen, Henning Jeong, Taewon Giroto, Lucas Nuss, Benjamin Aksoyak, Ibrahim Kagan Ulusoy, Ahmet Cagri Zwick, Thomas |
| contents | This paper presents an optimization-based behavioral model for mixers driven by multi-tone local oscillator (LO) signals, considered specifically for frequency comb orthogonal frequency-division multiplexing radar applications. Unlike traditional models, the proposed approach is designed and tested for multi-tone LO excitations. The model uses polynomial nonlinearities for both intermediate frequency and LO ports, supported by spectrum-domain fitting that selectively emphasizes strong intermodulation products. In addition, a polynomial block is introduced to capture input power-dependent phase nonlinearity. The approach is validated using circuit-level simulations and supported by measurements. Radar processing results show the model replicates distortive effects in simulations. The proposed model enables rapid system-level performance estimations and waveform optimization, replacing computationally expensive circuit-level simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_23889 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Optimization-Based Behavioral Modeling of Mixers for Frequency Comb OFDM Radar Processing Erdem, Umut Utku Poensgen, Henning Jeong, Taewon Giroto, Lucas Nuss, Benjamin Aksoyak, Ibrahim Kagan Ulusoy, Ahmet Cagri Zwick, Thomas Signal Processing This paper presents an optimization-based behavioral model for mixers driven by multi-tone local oscillator (LO) signals, considered specifically for frequency comb orthogonal frequency-division multiplexing radar applications. Unlike traditional models, the proposed approach is designed and tested for multi-tone LO excitations. The model uses polynomial nonlinearities for both intermediate frequency and LO ports, supported by spectrum-domain fitting that selectively emphasizes strong intermodulation products. In addition, a polynomial block is introduced to capture input power-dependent phase nonlinearity. The approach is validated using circuit-level simulations and supported by measurements. Radar processing results show the model replicates distortive effects in simulations. The proposed model enables rapid system-level performance estimations and waveform optimization, replacing computationally expensive circuit-level simulations. |
| title | Optimization-Based Behavioral Modeling of Mixers for Frequency Comb OFDM Radar Processing |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2602.23889 |