Publicaties
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Ultra low power wireless ECG system with beat detection and real time impedance measurement KU Leuven
A wireless ECG monitoring system is presented that is able to perform high-quality ECG signal acquisition, beat detection, and real time monitoring of skin-electrode impedance which can be used to monitor the presence of motion artefacts. The whole system consumes only 170μW while performing local beat detection. The beat detection algorithm was verified against the MIT-BIH arrhythmia database and obtains a median sensitivity of 99.74% and ...
A 0.6V 54DB SNR Analog Frontend with 0.18% THD for Low Power Sensory Applications in 65NM CMOS KU Leuven
© 2018 IEEE. This paper reports a complete sensor-to-digital analog frontend based on a highly linear amplifier that uses a dynamic-comparator to translate voltage variations of a sensory signal to the time-domain using pulse-density-modulation, followed by a charge-pump to integrate these time-domain variations back to the voltage-domain. This, highly digital building blocks based voltage-to-time-to-voltage translation, enables a large ...
Ultra Low Power Flash ADC for UWB Transceiver Applications KU Leuven
In this paper a low power, 4-bit, 50 MHz flash ADC in 130nm technology is presented. Power consumption is the most important objective in this ADC. Two blocks, S/H and Latch, can be omitted in this ADC because of the comparator and encoder structures. Flash ADC has a peak SNDR of 23.47dB at Nyquist frequency while the power consumption is 130μW with a binary code encoder. This reduces to 115μW if output data are in Gray code. The proposed ADC ...
A low cost compact LTCC-based GaN power amplifier module KU Leuven
In this paper, we explore different implementation levels of RF power amplifiers, including a hybrid PCB approach and a system-in-package (SiP) approach based on low temperature co-fired ceramic (LTCC) technology. The selected device of the amplifier is a low cost Si based AlGaN/GaN high electron mobility transistor (HEMT). Measured results show that the LTCC-PA module can exhibit an output power of 1 W and a drain efficiency of 41% at 3.8 GHz, ...
Broadband GaN-on-Si power amplifier module with fully integrated low temperature cofire ceramic passives KU Leuven
This article presents the first demonstration of a broadband GaN-on-Si power amplifier module integrated in a low temperature cofired ceramic (LTCC) technology.The active device of the amplifier is a low cost Si-based AlGaN/GaN high electron mobility transistor. Both the input and the output matching circuits were implemented with fully embedded passives in an LTCC substrate. Measured results show that the prototype module can exhibit an output ...
A 65 nm, 850 MHz, 256 kbit, 4.3 pJ/Access, Ultra Low Leakage Power Memory Using Dynamic Cell Stability and a Dual Swing Data Link KU Leuven
This paper presents the design of a high-speed ultra low power SRAM memory. Divided bit lines improve dynamic cell stability while at the same time decreasing active energy consumption. To limit unnecessary activity, word lines are divided on a word-by-word basis. Local write sense amplifiers make it possible to use low swing signaling on the global bit lines. To control this architecture, a distributed decoder is used. The use of dual swing ...
Design of high efficiency wireless power transmission system at low resonant frequency Universiteit Antwerpen
This paper presents a novel design of a wireless power transmission system which transfers an appreciable amount of electrical power wirelessly using low resonant frequency, with an excellent efficiency, and has a very low cost implementation. The designs of induction coils at both source and receiver sides are also presented in this paper. The mechanism for power transmission is through electro-magnetic induction. Also an immense knowledge of ...
A low power Time-of-Arrival ranging front end based on a 8-channel 2.2 mW, 53 ps single-shot-precision Time-toDigital Converter KU Leuven
A ranging front end for low power cm-acurate ranging applications, based on an 8-channel Time-to-Digital converter is presented. The implementation, fully digitizing pulses with a pulse rate up to 33 MHz, contains 8 non-strobed comparators attached to an 8-channel, low power, 74 ps resolution, 53 ps single shot precision TDC-array, interconnected through 200 mV low swing bit line signaling. The complete system consumes 4.7 mW in active mode and ...