Component Tolerance Effect on Ultra-Wideband Low-Noise Amplifier Performance

Abstract

Abstract-A study of the component tolerances on an ultra-wideband (UWB) low-noise amplifier designed on a conventional printed circuit board is presented in this paper. The low-noise amplifier design employs dual-section input and output microstrip matching networks for wideband operation with a low noise figure and a flat power gain. First, the effect of passive component and manufacturing process tolerances on the low-noise amplifier performance is theoretically studied by means of sensitivity analyses. Second, simulation and measurement results are presented for verification of the analytical results. It is shown that, compared with a lumped matching network design, a microstrip matching network design significantly reduces the UWB low-noise amplifier sensitivity to component tolerances.Index Terms-Low-noise amplifier (LNA), matching networks, sensitivity analysis, ultra-wideband (UWB).

Study, Modeling and Characterization of Dual-Band LNA Amplifiers Receivers for Wireless Microwaves Communication Systems

“…In this circu it was made input adaptation and output by Smith Chart. The Smith Chart, for each operating frequency, find the appropriate source and load reflection coefficients, which can satisfy the desired gain and noise figure [1][2][3][4][5].…”

“…Us ing conventional receiver arch itectures, simu ltaneous operation at different frequency bands can only be ach ieved by b u ild in g mu ltip le ind ep end ent s ig nal p aths wit h an With so many commun ication standards, one may consider to develop mult i-functional devices, which can operate at several bands and different modes. However, traditional mult ifunction device is often bulky and power hungry in general, wh ich limits the size, weight and the 78 I. Akhchaf et al: Study, M odeling and Characterization of Dual-Band LNA Amplifiers Receivers for Wireless M icrowaves Communication Systems battery life of the wireless communication devices [3][4][5]. Thus, development of a single-chip multi-function RF receiver with lo w-cost, lo w-power and small fo rm-factor characteristics is in demand [4][5].…”

“…However, traditional mult ifunction device is often bulky and power hungry in general, wh ich limits the size, weight and the 78 I. Akhchaf et al: Study, M odeling and Characterization of Dual-Band LNA Amplifiers Receivers for Wireless M icrowaves Communication Systems battery life of the wireless communication devices [3][4][5]. Thus, development of a single-chip multi-function RF receiver with lo w-cost, lo w-power and small fo rm-factor characteristics is in demand [4][5]. In this work, new concurrent dual-band receiver architecture is introduced that is capable of simu ltaneous operation at two different frequencies.…”

“…On the other hand, an LNA imp lemented with mult iband matching networks provides more degrees-of-freedo m to achieve both a low noise figure and flat power gain without increasing the power consumption. Ho wever, as the dual band input and output matching networks have more circu it components, the LNA noise figure and power gain can be more sensitive to the statistical variat ions of the passive components [3][4], [7].…”

Sensitivity analysis of parameter variation in T network impedance-matching

“…The parameter variation problem can usually be approached through two methods: 1) statistical analysis using electronic design automation software tools capable of Monte Carlo analysis and 2) sensitivity analysis based on sensitivity functions derived from a given circuit configuration [11]. In the present work, parameter variation problems due to component tolerance and process variation in T network are addressed using sensitivity analysis based on Q-based design method.…”