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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) 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...
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...
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