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This paper presents a low-power, low-noise and high precision operational amplifier for a tracking system containing the intelligent medical device, and is an extended version of paper previously published by Nenadovic et al. in proc. of ICECS 2014. The accuracy of the tracking system strongly depends on the accurate amplitude acquisition of the received signal. Therefore, an operational amplifier...
In this paper we present a novel successive approximation register (SAR) analog-to-digital converter (ADC) designed for the applications that demand many such converters working in parallel in a single chip. For this reason we have put a special emphasis on a very low chip area and low power dissipation. The ADC operates in the current-mode. The digital-to-analog converter (DAC), which is one of the...
The design of the low power fully integrated frequency synthesizer for IEEE 802.15.4a standard is presented. This work focuses on the VCO and the programmable frequency divider designs; which are the tuning range, power consumption and the speed limitation blocks of the frequency synthesizer. A novel low power, wideband, load-independent VCO architecture is introduced. The key feature of the VCO is...
This paper presents a frequency divider with a programmable division ratio between 208 and 320 intended for the standard IEEE 802.15.4a. The divider is based on high speed, low power, triple modulus prescalers. The wide division range is achieved by cascading these programmable prescalers. Each prescaler includes a phase selector and an ECL D-flip-flop which acts as a divider by 2. The triple operation...
This paper presents a fully differential baseband pulse generator intended for Impulse-Radio Ultra-Wideband (IR-UWB) direct up-conversion transmitter architectures. The generator provides impulse related binary phase shift keying (BPSK) and on/off keying (OOK) modulation in accordance with the IEEE 802.15.4a standard. The logic part of the generator runs on a clock of 499.2 MHz allowing direct generation...
This paper describes a monolithic integrated transmitter intended for impulse radio (IR) Ultra-wide band (UWB) applications including indoor communication and indoor localization. The transmitter operates in the higher UWB band centered at 7.68 GHz and it is optimized for a pulse bandwidth of about 1.5 GHz. The transmitter generates single pulses with a repetition rate of 60 MHz and utilizes pulse...
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