Ultra-Low Insertion Loss Stepped Impedance Resonator Topology for HTSC RF Front-End
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866917093576802304 |
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| author | Kurtser, Ilan Koral, Yoav Holdengreber, Eldad Schacham, Shmuel E. Farber, Eliyahu |
| author_facet | Kurtser, Ilan Koral, Yoav Holdengreber, Eldad Schacham, Shmuel E. Farber, Eliyahu |
| contents | We present the design, fabrication, and measurement of a high-temperature superconductor (HTSC) Stepped Impedance Resonator (SIR) band-pass filter for S-band applications, and its incorporation into a cryogenic receiver cascade. The 11-pole filter, implemented in YBa2Cu3O(7-x) (YBCO) thin films on sapphire, exhibits an ultra-low insertion loss (IL) of -0.1~dB, a sharp roll-off of 100~MHz, and a rejection level exceeding --80~dB. These measured results represent, to the best of our knowledge, the lowest reported IL for an S-band filter with this number of poles. When integrated with a cryogenic low-noise amplifier (LNA), system-level simulations and measurements predict a receiver noise figure (NF) of 0.34~dB at 3.39~GHz, enabling a 20% increase in radar detection range compared with conventional copper-based front ends. This work demonstrates the feasibility of practical HTSC-based RF front-ends for next-generation communication and radar systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_14447 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ultra-Low Insertion Loss Stepped Impedance Resonator Topology for HTSC RF Front-End Kurtser, Ilan Koral, Yoav Holdengreber, Eldad Schacham, Shmuel E. Farber, Eliyahu Systems and Control We present the design, fabrication, and measurement of a high-temperature superconductor (HTSC) Stepped Impedance Resonator (SIR) band-pass filter for S-band applications, and its incorporation into a cryogenic receiver cascade. The 11-pole filter, implemented in YBa2Cu3O(7-x) (YBCO) thin films on sapphire, exhibits an ultra-low insertion loss (IL) of -0.1~dB, a sharp roll-off of 100~MHz, and a rejection level exceeding --80~dB. These measured results represent, to the best of our knowledge, the lowest reported IL for an S-band filter with this number of poles. When integrated with a cryogenic low-noise amplifier (LNA), system-level simulations and measurements predict a receiver noise figure (NF) of 0.34~dB at 3.39~GHz, enabling a 20% increase in radar detection range compared with conventional copper-based front ends. This work demonstrates the feasibility of practical HTSC-based RF front-ends for next-generation communication and radar systems. |
| title | Ultra-Low Insertion Loss Stepped Impedance Resonator Topology for HTSC RF Front-End |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2511.14447 |