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This paper presents a new technique to determine the kernels of Volterra series based behavioral models of RF amplifiers in the frequency domain. A model with three kernels and a memory length of one is developed. The kernels of this model are assigned only by using a two-tone test. No knowledge of the integrated circuit is needed to determine all model parameters. The derivation of such a model out...
This paper presents quantitative theoretical and simulative results on the sensitivity of a combined single shot Galileo/GPS receiver with homodyne front-end architecture due to DC-offset, flicker noise, and resolution of the analog to digital converter.
With an ideal model of a six-port communications receiver in mind, the optimal local oscillator (LO) power at the diode mixers for maximum signal-to-noise-ratio (SNR) at the baseband outputs is determined by simulations. The simulation setup contains the equivalent circuit for a diode mixer that has been used in a six-port communications receiver demonstrator [1]. By means of noise analysis and one...
In this paper a diode power detector circuit is investigated for application in a six-port communications receiver. The diode behavior is modeled by the fundamental diode equation, which is solved for the output DC operating point applying an expansion theorem of modified Bessel functions for the exponential function. The results are compared with a Harmonic Balance system simulation and the closely...
This paper analyzes the combined effect of a residual frequency offset and drift after down-conversion for single shot receiver architectures as they are currently utilized in mobile terminals for GPS reception. The change in the receiver detection probability due to this effect is calculated, as well as the associated connected sensitivity-loss. The obtained results are given for the GPS C/A code...
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