Title :
A noise model for the analog correlator
Author :
Tu, Chunjiang ; Liu, Boan ; Chen, Hongyi
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
A noise model for the analog correlator used in the ultra wideband (UWB) receivers is described in this paper due to the lack of simulation capability of current EDA tools on noise performance of the correlator. The circuit is divided into several parts to calculate the equivalent noise sources. The ideal impulse generators are then applied instead of the noise sources to obtain the time varying transfer functions. Fourier transforms are applied to explore the relationship between the noise input and output in frequency domain for each part. Then the symmetrical noise sources are grouped together and the periodicity of the circuit is utilized lo further simplify the model. This model can fairly be used to evaluate the noise performance of the correlator and other linear time-varying (LTV) circuits for impulse radio systems.
Keywords :
Fourier transforms; circuit noise; frequency-domain analysis; pulse generators; radio receivers; transfer functions; ultra wideband technology; EDA tool; Fourier transform; analog correlator; equivalent noise source; impulse generator; impulse radio system; noise model; time varying transfer function; ultra wideband receiver; Circuit noise; Circuit simulation; Correlators; Electronic design automation and methodology; Fourier transforms; Frequency domain analysis; Noise generators; Time varying systems; Transfer functions; Ultra wideband technology;
Conference_Titel :
Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on
Print_ISBN :
0-7803-8511-X
DOI :
10.1109/ICSICT.2004.1436768
