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A 1-2.25 Gb/s clock and data recovery (CDR) circuit using 1/4th-rate digital quadricorrelator frequency detector and skew-calibrated multi-phase voltage-controlled oscillator is presented. With 1/4th-rate clock architecture, the coil-free oscillator can have lower operation frequency providing sufficient low-jitter operation. Moreover, it is inherent 1-to-4(More)
A 10 bit 10 MS/s cyclic analog-to-digital converter has been implemented using 0.18 /spl mu/m CMOS technology. The converter was optimized with respect to area and power consumption in order to allow the integration of a multichannel array within a complex logic chip. The power consumption is 9.5 mW. The area per A/D-converter cell is 0.11 mm/sup 2/. The(More)
In this paper, we propose low power architecture to extract UWB pulse radio signals from noise level in the presence of narrow band interfering channels based on two dimensional statistical correlation technique. The receiver consists of many narrow band-pass filters, which extract energy either from transmitted UWB signal, interfering channels or noise.(More)
This paper presents low power fully integrated super-regenerative UWB impulse detector with automatic adjustment of incoming pulses at highly sensitive region by using synchronized voltage controlled quenching mechanism. In-band and out-of-band interferences are eliminated by logic comparison and redundancy check between the outputs of multiple(More)
In this paper, we propose a low power architecture to extract UWB pulse radio signals from noise level in the presence of narrow band interfering channels. The receiver consists of many narrow band-pass filters, which extract energy either from transmitted UWB signal, interfering channels or noise. Transmitted UWB data can be extracted by statistical(More)
A hybrid acceleration sensing system is presented consisting of a micromachined acceleration sensor and a CMOS-IC. Due to closed loop operation, linearity, measurement range and bandwidth of the sensor device are extended by more than an order of magnitude. The system forms an electromechanical ΔΣ-converter featuring an autozero OP minimizing low(More)
A real-time capable and accurate template-based fitting approach for the detection and delineation of all the QRS-complexes, P-, and T-waves is presented. The ECG features extraction is accomplished with a very low amount of ECG signal preprocessing. The performance of our proposed algorithm is validated using ECG records from both the MIT-BIH Arrhythmia(More)
This paper presents the complementary colpitts self-quenched super-regenerative ultra-wideband (UWB) bandpass filter for low power, low cost and medium data rate wireless communication systems. The high gain, large bandwidth and low power consumption are the attractive properties of self-quenched super-regenerative filters for UWB systems. The bandwidth of(More)
This paper presents fully integrated CMOS single band UWB impulse radio transmitter for low power and medium data rate wireless sensor network. The pseudo random pattern of UWB impulses are generated during switch on-time of on-off keying modulation. The UWB pulse generator is based on combination of multiple pulses to achieve chirped UWB impulse of nearly(More)
This paper presents 6-to-10 GHz UWB impulse transceiver for low power and medium data rate wireless sensor networks. The architecture is based on amplification and filtering of periodic sequence of UWB impulses during switch on-time of DC-free on-off keying modulated pattern. Designed in 0.18 mum CMOS process, the UWB signal to in-band interferer ratio of(More)