Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor
A coupled-line coupler based on the asymmetric cascade connection of two coupled line sections is used to achieve a high coupling factor using low-cost material and technology in the X frequency band, and its performance is compared with a standard quarter-wave, coupled-line coupler, showing an incr...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-02-01
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| Series: | Electronics |
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| Online Access: | http://www.mdpi.com/2079-9292/7/2/25 |
| _version_ | 1811187020784992256 |
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| author | Giovanni Sanna Giorgio Montisci Zushen Jin Alessandro Fanti Giovanni Andrea Casula |
| author_facet | Giovanni Sanna Giorgio Montisci Zushen Jin Alessandro Fanti Giovanni Andrea Casula |
| author_sort | Giovanni Sanna |
| collection | DOAJ |
| description | A coupled-line coupler based on the asymmetric cascade connection of two coupled line sections is used to achieve a high coupling factor using low-cost material and technology in the X frequency band, and its performance is compared with a standard quarter-wave, coupled-line coupler, showing an increase in the coupling factor of about 3 dB. The proposed coupler can be effectively used in a Doppler motion detection sensor, due to its strong coupling and relatively high isolation. The coupler is designed through a simple, yet rigorous, equivalent circuital model. Then, an optimization procedure was performed using the commercial software Ansys HFSS in order to compensate for losses and second order effects. A prototype of the designed coupler was realized, and the measured data show very good agreement with simulations. |
| first_indexed | 2024-04-11T13:55:12Z |
| format | Article |
| id | doaj.art-a50db6a46a2247cfb7c78fc3c4e97807 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-04-11T13:55:12Z |
| publishDate | 2018-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-a50db6a46a2247cfb7c78fc3c4e978072022-12-22T04:20:22ZengMDPI AGElectronics2079-92922018-02-01722510.3390/electronics7020025electronics7020025Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection SensorGiovanni Sanna0Giorgio Montisci1Zushen Jin2Alessandro Fanti3Giovanni Andrea Casula4R&D Labs, CIAS Elettronica, 20158 Milano, ItalyDipartimento di Ingegneria Elettrica ed Elettronica, Università degli Studi di Cagliari, 09123 Cagliari, ItalyEMC Research and Measurement Center of Navy, Shanghai 200235, ChinaDipartimento di Ingegneria Elettrica ed Elettronica, Università degli Studi di Cagliari, 09123 Cagliari, ItalyDipartimento di Ingegneria Elettrica ed Elettronica, Università degli Studi di Cagliari, 09123 Cagliari, ItalyA coupled-line coupler based on the asymmetric cascade connection of two coupled line sections is used to achieve a high coupling factor using low-cost material and technology in the X frequency band, and its performance is compared with a standard quarter-wave, coupled-line coupler, showing an increase in the coupling factor of about 3 dB. The proposed coupler can be effectively used in a Doppler motion detection sensor, due to its strong coupling and relatively high isolation. The coupler is designed through a simple, yet rigorous, equivalent circuital model. Then, an optimization procedure was performed using the commercial software Ansys HFSS in order to compensate for losses and second order effects. A prototype of the designed coupler was realized, and the measured data show very good agreement with simulations.http://www.mdpi.com/2079-9292/7/2/25coupled linesdirectional couplermotion detection systems |
| spellingShingle | Giovanni Sanna Giorgio Montisci Zushen Jin Alessandro Fanti Giovanni Andrea Casula Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor Electronics coupled lines directional coupler motion detection systems |
| title | Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor |
| title_full | Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor |
| title_fullStr | Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor |
| title_full_unstemmed | Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor |
| title_short | Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor |
| title_sort | design of a low cost microstrip directional coupler with high coupling for a motion detection sensor |
| topic | coupled lines directional coupler motion detection systems |
| url | http://www.mdpi.com/2079-9292/7/2/25 |
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