Accurate Indoor Ranging by Broadband Harmonic Generation in Passive NLTL Backscatter Tags

• Published in: IEEE transactions on microwave theory and techniques Vol. 62; no. 5; pp. 1249 - 1261
• Main Authors: Yunfei Ma, Kan, Edwin Chihchuan
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.05.2014; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Ambiguity; Applied sciences; Backscatter; Broadband; Broadband communication; Circuit properties; Design. Technologies. Operation analysis. Testing; Distance measurement; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Frequency conversion; Harmonic analysis; harmonic generation; Harmonic generations; Harmonics; Indoor; indoor communication; Integrated circuits; Interference; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Phase error; phase measurement; Radiofrequency identification; Radiolocalization and radionavigation; ranging; Reflection; RF identification (RFID) tags; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Tags; Telecommunications; Telecommunications and information theory; Phase measurement; Backscattering; Continuous wave; Accuracy; Transmission line; Indoor installation; Wide band; Robustness; Phase error; Multiple frequency; Fundamental frequency; Backscatter; Range finding; Wide band transmission; Harmonic generation; Vulnerability; Continuous phase; ranging; RF identification (RFID) tags; Simulation; Second harmonic; Heuristic method; Radiofrequency integrated circuits; indoor communication; RFID tag; Radio frequency identification

Millimeter-precision meter-distance real-time indoor ranging capability is challenging due to multipath reflections in a rich scattering environment. Traditional continuous wave (CW) phase-based ranging methods, although simple and flexible, are vulnerable to phase offsets and interferences. We impr...