921788708093039e2a6f40ef9f735303 10.22034_jsst.2025.1526.pdf cbdcdb7e3d032486e6898b2e79c6767db7416b97 10.22034_jsst.2025.1526.pdf 2e1cec9a4a4030603e7f1ace3f5cb144a50bbf6a5328466ea19fce6ffb7df688 10.22034_jsst.2025.1526.pdf Title: Simultaneous Resolution and Dynamic Range Improvement in Microwave Phase-Variation Displacement Sensors Subject: In this paper, a reflective-mode phase-variation microwave displacement sensor is proposed. It consists of a reader, a one-port microstrip line terminated with a matched load, and a movable resonator (etched in an independent substrate), which exhibits three different resonance frequencies, two of them in low frequency range and close to each other, and the third one at a higher frequency. The sensing mechanism is based on the motion of the resonator along the microstrip line, with a small airgap in between. The phase of the reflection coefficient at the three resonance frequencies of the resonator is recorded at the input port of the reader. As a result, the motion of the movable resonator can be characterized. The phase of the reflection coefficient at the two lower frequencies is used to enhance the dynamic range, while the phase at the higher frequency improves sensor resolution. Keywords: Index Terms—microstrip technology, microwave sensor, reflective-mode sensor, displacement sensor, phase-variation sensor Author: Amirhossein Karami Horestani*, Ferran Paredes, and Ferran Martín Creator: Microsoft® Word LTSC Producer: Microsoft® Word LTSC CreationDate: Sun May 25 08:12:34 2025 CEST ModDate: Sun May 25 08:13:19 2025 CEST Custom Metadata: no Metadata Stream: yes Tagged: yes UserProperties: no Suspects: no Form: none JavaScript: no Pages: 7 Encrypted: no Page size: 595.38 x 841.98 pts (A4) Page rot: 0 File size: 564537 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- TimesNewRomanPSMT TrueType WinAnsi no no no 9 0 BCDHEE+TimesNewRomanPS-BoldMT TrueType WinAnsi yes yes no 42 0 TimesNewRomanPSMT CID TrueType Identity-H yes no yes 44 0 TimesNewRomanPS-BoldMT TrueType WinAnsi no no no 11 0 BCDEEE+BTitrBold TrueType WinAnsi yes yes no 13 0 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XMP: Microsoft® Word LTSC Index Terms—microstrip technology, microwave sensor, reflective-mode sensor, displacement sensor, phase-variation sensor application/pdf Simultaneous Resolution and Dynamic Range Improvement in Microwave Phase-Variation Displacement Sensors Amirhossein Karami Horestani*, Ferran Paredes, and Ferran Martín In this paper, a reflective-mode phase-variation microwave displacement sensor is proposed. It consists of a reader, a one-port microstrip line terminated with a matched load, and a movable resonator (etched in an independent substrate), which exhibits three different resonance frequencies, two of them in low frequency range and close to each other, and the third one at a higher frequency. The sensing mechanism is based on the motion of the resonator along the microstrip line, with a small airgap in between. The phase of the reflection coefficient at the three resonance frequencies of the resonator is recorded at the input port of the reader. As a result, the motion of the movable resonator can be characterized. The phase of the reflection coefficient at the two lower frequencies is used to enhance the dynamic range, while the phase at the higher frequency improves sensor resolution. 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