Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Chenyan Song"'
Autor:
Chenyan Song, Amy D. Droitcour, Shekh M. M. Islam, Avon Whitworth, Victor M. Lubecke, Olga Boric-Lubecke
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract Cognitive buildings use data on how occupants respond to the built environment to proactively make occupant-centric adjustments to lighting, temperature, ventilation, and other environmental parameters. However, sensors that unobtrusively an
Externí odkaz:
https://doaj.org/article/6385c17c883c4e25b73ef5812cf0acf8
Publikováno v:
Sensors, Vol 23, Iss 11, p 5078 (2023)
Ground-penetrating radar (GPR) is an effective geophysical electromagnetic method for underground target detection. However, the target response is usually overwhelmed by strong clutter, thus damaging the detection performance. To account for the non
Externí odkaz:
https://doaj.org/article/7731e0d6c4214c1c9fb3efb72c5e6cc9
Publikováno v:
Microwave and Optical Technology Letters. 55:23-27
A 0.18-μm CMOS wideband passive mixer fully integrated with baluns in IBM7HP process is reported. The mixer exhibits wideband operation, despite the intrinsic narrow-band magnitude balance of passive baluns. Very low DC offset, of less than 3 mV, is
Publikováno v:
Sensors and Actuators B: Chemical. 137:222-229
We describe the fabrication of a screen printed disposable electrode system with integrated elements to allow for control of the working electrode temperature. The device has fully functional working, counter, and reference electrodes with underlying
Publikováno v:
2014 IEEE International Wireless Symposium (IWS 2014).
Recent advances in integrated circuit technology have produced highly integrated mixed-signal modules that include data acquisition, processing, storage, and wireless connectivity. Such System-on-Chip (SoC) modules are commercially available for a wi
Publikováno v:
EMBC
One of the challenges in Doppler radar systems for physiological monitoring is a large DC offset in baseband outputs. Typically, AC coupling is used to eliminate this DC offset. Since the physiological signals of interest include frequency content ne
Publikováno v:
2012 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS).
A low cost, low power Doppler radar occupancy sensor is developed by building a customized passive sensor node into a low power System-on-Chip (SoC) CC2530 RF transceiver. Experiment on the periodic moving mechanic target illustrates that this SoC ba
Publikováno v:
EMBC
System-on-Chip (SoC) based Doppler radar occupancy sensor is developed through non contact detection of respiratory signals. The radio was developed using off the shelf low power RF CC2530 SoC chip by Texas Instruments. In order to save power, the tr
Publikováno v:
2009 IEEE MTT-S International Microwave Symposium Digest.
A 2.4 GHz resistive ring mixer with on-chip baluns is fully integrated in 0.18µm IBM7HP process. This mixer exhibits broadband RF impedance matching with return loss better than −10 dB through the RF frequency range from 2 to 6 GHz. The conversion
Publikováno v:
2009 IEEE Radio and Wireless Symposium.
This paper describes a wide-band resistive ring mixer fully integrated in 0.25μm CMOS process. This mixer exhibits broadband RF impedance matching with return loss better than −10 dB from 2.2 to 8.3 GHz, and better than −15 dB from 3 to 6.2 GHz.