Korea Advanced Institute of Science and Technology

Samsung Electronics Co., Ltd.

Electronics and Telecommunications Research Institute

Seok-Kyun Han

Sang-Gug Lee

Sun-A Kim

Kyoung-Young Choi

Dae-Woong Park

Ji-Eun Kim

Cheol-Sig Pyo

Jae-Seung Lee

Nae-Soo Kim

Jaesup Lee

Ho-Yong Kang

Dae-Young Yoon

Xiaohua Yu

Trung-Kien Nguyen

A phase locked loop includes a signal receiver configured to generate a mixed signal based on the received signal and an oscillator signal, and a frequency control circuit configured to compare the mixed signal to a reference signal, and adjust the oscillator signal based on a result of the comparing.

Phase locked loop using received signal

Provided is an antenna module that comprises an antenna comprising a radiation patch for transmitting or receiving the terahertz wave, and a first ground disposed away from the radiation patch, the first ground having a hole, an integrated circuit board having a signal processing unit configured to generate the terahertz wave or to process the terahertz wave received through the antenna, the integrated circuit board being disposed under the antenna and a via configured to connect the radiation patch with the signal processing unit, the via passing through the hole.

Antenna module for transmitting or receiving terahertz waves and focal plane array structure for real-time terahertz imaging

Provided is an image sensing device that includes a detector configured to detect a terahertz wave signal received by a receiving antenna, a voltage-controlled oscillator configured to output an oscillation frequency according to an output voltage of the detector, and a frequency digital converter configured to convert the oscillation frequency output from the voltage-controlled oscillator to a digital signal.

Image sensing device and focal plane array device using frequency conversion for real-time terahertz imaging

Provided is a low-power wake-up receiver that is sensitive to electric waves, by which power consumed by a radio frequency (RF) transceiver of a sensor node in a ubiquitous sensor network (USN) is minimized. A wake-up receiver waking up a main transceiver includes a duty cycle signal generation unit controlling a duty cycle of a duty cycle signal; a burst signal detection unit receiving an input signal including a burst signal and a data signal based on the duty cycle signal, amplifying the input signal, and, if the amplified input signal is the burst signal, outputting a control signal; and a data signal detection unit re-amplifying the amplified input signal based on the control signal, and, if the re-amplified input signal is the data signal, outputting a wake-up signal. Power supplied to the duty cycle signal generation unit is interrupted based on the control signal and power is re-supplied to the duty cycle signal generation unit based on the wake-up signal.

Wake-up receiver and wake-up method using duty cycling and power off technique

Growing community of inventors

Daejeon, South Korea

Seok-Kyun Han