Fig. 1: Principle diagrams and sizing of the WAFLC system. | Communications Engineering

Fig. 1: Principle diagrams and sizing of the WAFLC system.

From: Wireless active feedback loop for backscattering communication

Fig. 1

a Overview of reader and transponder. b Simplified system where the transponder is totally passive and has no components. c Reading distance as a function of loop gain (at 4 GHz) to satisfy the condition of spontaneous oscillation on amplitude (σ = −19 dBsm).

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