Multiband Transceiver Phase Difference Distance Measurement

The patent replaces expensive atomic clocks with inexpensive crystal oscillators in each terminal device. Each terminal generates its own timing signals using low-cost oscillators, eliminating the need for expensive synchronized timing equipment while maintaining positioning functionality through phase difference measurement of exchanged signals.

The patent eliminates power-hungry atomic clocks and replaces them with low-power crystal oscillators in each terminal. The system achieves positioning by measuring phase differences of signals exchanged between terminals, each using its own low-power oscillator, thereby dramatically reducing power consumption compared to GPS systems requiring atomic clock synchronization.

The patent replaces RFID's radio wave intensity-based positioning with a phase difference measurement system. Each terminal exchanges timing signals and measures phase differences, enabling accurate distance calculation through trigonometric relationships. This substitution of measurement methodology achieves high positioning accuracy without requiring dense deployment of RFID infrastructure.

The patent combines phase difference measurement at multiple frequencies with trigonometric calculation methods. By measuring phase differences at different frequencies and combining the results through mathematical relationships, the system achieves accurate distance measurement without requiring high transmission power, thereby extending positioning range beyond the 10-meter limitation of conventional UWB.

The patent extracts the timing measurement function from complex reflected wave systems and implements it directly in each terminal using simple phase difference measurement of exchanged signals. By eliminating the need for circulators and complex signal separation hardware, the system achieves distance measurement capability while keeping terminal devices compact and simple.