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This paper describes a localization method for an IR-UWB (Impulse Radio Ultra Wideband) two-way ranging system developed for precise time-of-arrival measurements. The ranging system provides a time resolution of 275 ps, which allows precise indoor distance estimation with the accuracy of 4 cm. In this work, a two-way ranging algorithm has been extended into a localization algorithm without the need...
This paper describes a monolithic integrated single-chip transceiver intended for impulse radio (IR) — Ultra-wide Band (UWB) applications compliant to the IEEE 802.15.4a standard. The transceiver operates in the higher UWB band on four different channels, which fit into the European spectral mask (defined by the ECC). In accordance to the standard, several data rates up to 27.24 MB/sec have been implemented...
This paper describes a monolithic integrated singlechip transceiver intended for impulse radio (IR) — Ultra-wide Band (UWB) applications compliant to the IEEE 802.15.4a standard. The transceiver operates in the higher UWB band on the mandatory channel #9 (7.9872 GHz). The implemented nominal data rate is 850 kb/sec. The presented chip consists of the entire RF-front-end, 6bit-resolution successive...
This paper presents a monolithically integrated ultra wideband direct up conversion transmitter designed in accordance with IEEE 802.15.4a standard. The transmitter operates in the higher UWB band in eight communication channels. It supports the burst position and the binary phase-shift keying modulation schemes and provides a modulated impulse sequence with a pulse repetition frequency up to 499...
This paper describes a monolithic integrated transmitter intended for impulse radio (IR) Ultra-wide band (UWB) indoor communication and indoor localization. The transmitter operates in the higher UWB band centered at 7.25 GHz and generates impulses with bandwidth of 2.08 GHz. Consequently, the transmitter utilizes for communication and ranging complete UWB band assigned for Europe. The average pulse...
This paper describes a monolithic integrated single-chip transceiver intended for Impulse Radio (IR) Ultra-wide Band (UWB) applications compliant with the IEEE 802.15.4a standard. The transmitter is designed to operate in the upper UWB band on the mandatory channel #9 (7.9872 GHz). In order to assure compliance with the standard, the transceiver components are designed towards higher degree of integration,...
This paper describes a monolithic integrated transmitter intended for impulse-radio (IR) Ultra-wide Band (UWB) applications compliant to the IEEE 802.15.4a standard. The transmitter operates in the higher UWB band on the communication channels #5, #6, #8 and mandatory channel #9. The impulse generation is based on the gated oscillator principle allowing required on-off keying (OOK) as well as binary...
A low power programmable frequency divider for IEEE 802.15.4a standard is implemented in a 0.25 µm BiCMOS process. The frequency divider architecture is based on the low power high speed triple-modulus prescaler design. The triple-modulus prescaler supports three division modes (N/N±1) via the phase switching between the output signals of the master/slave emitter-coupled logic divide-by-two stage...
In this paper the influence of the external load on the key parameters of the commonly used cross-coupled LC VCO architecture is investigated. It is shown, that even high ohmic external load decreases the impedance of the resonator, limits the frequency tuning range, degraded the phase noise and increases the power dissipation of the structure. Additionally, based on the carried out analyses, 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 describes an ultra-low power differential 7th order active-RC low pass filter (LPF). The proposed filter is ready for the use in Impulse-Radio (IR) Ultra-Wideband (UWB) IEEE 802.15.4a standard compliant transceivers. The circuit is composed of three biquadratic and one first order filter sections. The structure of the operational amplifier (op amp) is adopted to ensure high linearity demands...
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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