360° phase detector cell for measurement systems based on switched dual multipliers
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arXiv
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| Format: | Preprint |
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2024
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| author | Pérez, Baltasar Araña, Víctor A. Perez-Mato, Javier Cabrera, Francisco |
| author_facet | Pérez, Baltasar Araña, Víctor A. Perez-Mato, Javier Cabrera, Francisco |
| contents | This letter presents a 360° phase detector cell for performing phase-shift measurements on multiple output systems. An analog phase detector, capable of detecting a maximum range of {\pm}90°, has been used to perform a double multiplication of two signals, both in-phase and phase-shifted. The proposed solution broadens the frequency range beyond other solutions that require to fulfill the quadrature condition. Subsequently, the possibility of reaching the theoretical limit of phase shift within a hybrid coupler (Φ < 90° {\pm} 90°) is discussed by using four straight-line equations to characterize the phase detector response. The proposed solution allows to extend up to 360° the phase detection range and provide an increased immunity with respect to both impedance mismatching and phase deviations within the hybrid coupler. To demonstrate the feasibility of the proposed design, a phase detector cell prototype has been implemented using a commercial hybrid coupler with a phase shift of 92.5° {\pm} 0.5° at 3.1-5.9 GHz, an external switch and a microcontroller with 2 kB of memory. Measurements show a range of detection of 360° ({\pm}180°) across the tested frequency band of 2.7-6 GHz. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_12825 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | 360° phase detector cell for measurement systems based on switched dual multipliers Pérez, Baltasar Araña, Víctor A. Perez-Mato, Javier Cabrera, Francisco Systems and Control This letter presents a 360° phase detector cell for performing phase-shift measurements on multiple output systems. An analog phase detector, capable of detecting a maximum range of {\pm}90°, has been used to perform a double multiplication of two signals, both in-phase and phase-shifted. The proposed solution broadens the frequency range beyond other solutions that require to fulfill the quadrature condition. Subsequently, the possibility of reaching the theoretical limit of phase shift within a hybrid coupler (Φ < 90° {\pm} 90°) is discussed by using four straight-line equations to characterize the phase detector response. The proposed solution allows to extend up to 360° the phase detection range and provide an increased immunity with respect to both impedance mismatching and phase deviations within the hybrid coupler. To demonstrate the feasibility of the proposed design, a phase detector cell prototype has been implemented using a commercial hybrid coupler with a phase shift of 92.5° {\pm} 0.5° at 3.1-5.9 GHz, an external switch and a microcontroller with 2 kB of memory. Measurements show a range of detection of 360° ({\pm}180°) across the tested frequency band of 2.7-6 GHz. |
| title | 360° phase detector cell for measurement systems based on switched dual multipliers |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2404.12825 |