Transponder system and method for measurement of separation

Distance determination system for determining the distance (dist) between a base station (BS) and a transponder (TR), wherein

• the base station (BS) has an oscillating signal source (OSZB) for generating a signal (stx)) and a transmission device (ANTB) for radiating out the signal (stx(t)),
• the transponder (TR) has a receiving device (ANTT) for receiving the signal (erxt(t)) from the base station (BS), an oscillator (OSZt) for generating a signal (sOSZ(t)) which is quasi-phase-coherent with the signal (erxt(t)) from the base station (BS), and a transmission device (ANTT) for radiating out the quasi-phase-coherent signal (sOSZ(t)),
• the base station (BS) has in addition a receiving device (ANTB) for receiving the quasi-phase-coherent signal (sOSZ(t)) from the transponder (TR) and distance determination equipment (RMTX, FLT, DEMOD) for determining the distance (dist) between the base station (BS) and the transponder (TR),
• the oscillator (OSZT) in the transponder (TR) is excited with the received signal (srxt(t)) into generating a quasi-phase-coherent signal (sOSZ(t)), and
• the transponder (TR) or the base station (BS), is constructed as an LTCC (Low Temperature Cofired Ceramic) module (LM), or making use of at least one LTCC module (LM).

Distance determination system for determining the distance (dist) between a base station (BS) and a transponder (TR), wherein

• the base station (BS) has an oscillating signal source (OSZB) for generating a signal (stx(t)) and a transmission device (ANTB) for radiating out the signal (stx(t)),
• the transponder (TR) has a receiving device (ANTT) for receiving the signal (erxt(t)) from the base station (BS), an oscillator (OSZT) for generating a signal (sOSZ(t)) which is quasi-phase-coherent with the signal (erxt(t)) from the base station (BS), and a transmission device (ANTT) for radiating out the quasi-phase-coherent signal (sOSZ(t)),
• the base station (BS) has in addition a receiving device (ANTB) for receiving the quasi-phase-coherent signal (sOSZ(t)) from the transponder (TR) and distance determination equipment (RMIX, FLT, DEMOD) for determining the distance (dist) between the base station (BS) and the transponder (TR),
• the oscillator (OSZT) in the transponder (TR) is excited with the received signal (srxt(t)) into generating a quasi-phase-coherent signal (sOSZ(t)), and
• the transponder is equipped with signal generation equipment (OSZT, CLK/Sw) for generating an oscillator signal (sOSZ(t)) from a signal received by the transponder (erxt(t)=stx(t−τ/2)) using an oscillator (OSZT) and a switching facility (CLK/Sw) for switching the oscillator (OSZT) cyclically on and off, for generating an oscillator signal defined by
• s
• rx
• ⁡
• (
• t
• )
• =
• s
• osz
• ⁡
• (
• t
• -
• τ
• 2
• )
• =
• sin
• ⁡
• (
• ω
• osz
• ·
• t
• -
• (
• ω
• c
• +
• ω
• sw
• )
• ·
• τ
• +
• ϕ
• o
• )
• where ωc is the central frequency of the base station oscillator (OSZB), ωSW is the modulation frequency of the transmit signal stx (t) from the base station (BS), t is the time in the interval 0–Ts, and τ is the time for the propagation of the signals over the distance (dist) between the base station (BS) and the transponder (TR) and φ0 is an arbitrary phase offset.

Distance determination system for determining the distance (dist) between a base station (BS) and a transponder (TR), wherein

• the base station (BS) has an oscillating signal source (OSZB) for generating a signal (stx (t)) and a transmission device (ANTB) for radiating out the signal (stx(t)),
• the transponder (TR) has a receiving device (ANTT) for receiving the signal (erxt(t)) from the base station (BS), an oscillator (OSZT) for generating a signal (sOSZ(t)) which is quasi-phase-coherent with the signal (erxt(t)) from the base station (BS), and a transmission device (ANTT) for radiating out the quasi-phase-coherent signal (sOSZ(t)),
• the base station (BS) has in addition a receiving device (ANTB) for receiving the quasi-phase-coherent signal (sOSZ(t)) from the transponder (TR) and distance determination equipment (RMIX, FLT, DEMOD) for determining the distance (dist) between the base station (BS) and the transponder (TR),
• the oscillator (OSZT) in the transponder (TR) is excited with the received signal (srxt(t)) into generating a quasi-phase-coherent signal (sOSZ(t)), and
• the transponder further comprises a modulator providing a modulation (fmk) used for switching the oscillator (OSZT) in the transponder (TR) on and off, for transmitting
• additional information from the transponder (TR) to the base station (BS).

Distance determination system for determining the distance (dist) between a base station (BS) and each of plural transponders (TR), wherein

• the base station (BS) has an oscillating signal source (OSZB) for generating a signal (stx(t)) and a transmission device (ANTB) for radiating out the signal (stx(t)),
• each transponder (TR) has a receiving device (ANTT) for receiving the signal (erxt(t)) from the base station (BS), an oscillator (OSZt) for generating a signal (sOSZ(t)) which is quasi-phase-coherent with the signal (erxt(t)) from the base station (BS), and a transmission device (ANTT) for radiating out the quasi-phase-coherent signal (sOSZ(t)),
• the base station (BS) has in addition a receiving device (ANTB) for receiving the quasi-phase-coherent signal (sOSZ(t)) from the transponder (TR) and distance determination equipment (RMIX, FLT, DEMOD) for determining the distance (dist) between the base station (BS) and the transponder (TR), and
• the oscillator (OSZT) in the transponder (TR) is excited with the received signal (srxt(t)) into generating a quasi-phase-coherent signal (sOSZ(t)), and
• each transponder is provided with a modulator having an individual modulation (fmk) for switching the oscillator (OSZT) in the transponder (TR) on and off so that each transponder has a unique individual modulation different from the other individual modulations of the other transponders.