Samsung Electronics Co., Ltd.

Young-hun Min

Il-Jong Song

Hyung-jae Shin

Hwan-young Choi

Jeong-kwan Lee

Cheong-Worl Kim

A signal converter capable of stabling converting input signals in an extended operation margin, a radio frequency identification (RFID) tag having the signal converter and a method of driving a RFID tag. The signal converter includes a first signal converter which converts an incoming analog signal into a power signal, a second signal converter which converts the analog signal into a first demodulation signal, a signal amplifier which amplifies the first demodulation signal to output a second demodulation signal such that a value of an externally-supplied reference signal is included in a peak-to-peak range of the second demodulation signal, and a logic signal generator which converts the second demodulation signal into a digital signal in response to the power signal. Because the second demodulation signal has an extended operation margin in converting analog signal into digital signal, stable conversion of the input signals is possible, and rate of recognizing RFID tag is improved.

Signal converter, RFID tag having signal converter, and method of driving RFID tag

A micromirror driver for simultaneously and independently controlling a resonant frequency and an amplitude of a micromirror. A micromirror having a plurality of grooves is supported in rotation by an elastic body. Base electrodes having a comb shape are affixed to the grooves and along an edge of the micromirror. A plurality of driver electrodes also having a comb shape are respectively engaged with the base electrodes in a gear like arrangement to electrostatically interact with the micromirror in response to applied voltages. An amplitude and a frequency of the micromirror are controlled by varying a magnitude or a waveform of one or more electrode voltages or by varying a phase between voltages applied to at least two electrodes. Accordingly, greater driving forces, a larger rotation angle of the micromirror, and independent control of amplitude and resonant frequency of the micromirror are obtained.

Growing community of inventors

Anyang-si, South Korea

Young-hun Min