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Single-Stage Transistor Amplifiers
Published in Nassir H. Sabah, Electronics, 2017
The cascode amplifier consists of a transistor in the CE/CS configuration coupled to a transistor in the CB/CG configuration. The basic circuit is illustrated in Figure 8.4.7, where it is assumed that the transistors are properly biased. In discrete amplifiers, Q1 is biased as for CE amplifiers (Section 8.1), and VBIAS is normally derived from VCC, with the base decoupled to ground through a large capacitor. In ICs, a current mirror could be used for biasing, as illustrated later.
C
Published in Philip A. Laplante, Comprehensive Dictionary of Electrical Engineering, 2018
catcher inverse kinematics calculations, Cartesian-based control is of greater computational complexity. ü Here X d , X d , and X d denote position, velocity, and acceleration of the desired trajectory in Cartesian space. is a vector of generalized forces and q is a vector of generalized positions. cascode amplifier an amplifier consisting of a grounded-emitter input stage that drives a grounded-base output stage; advantages include high gain and low noise; widely used in television tuners. See also cascode. CASE engineering.
Low Noise Amplifiers
Published in Krzysztof Iniewski, Wireless Technologies, 2017
Leonid Belostotski, James Haslett
when Cgd, gate parasitic resistance, and channel charging resistance are ignored. An improved cas-coded version of this circuit (Figure 11.4b) can be found in many designs. The cascode transistor is used to reduce the effect of the input transistor gate-drain capacitor and to increase the reverse isolation of the LNA, which helps with stability and makes the LNA input impedance less sensitive to the LNA load impedance.
Design and Analysis of 30 GHz CMOS Low-Noise Amplifier for 5G Communication Applications
Published in IETE Journal of Research, 2023
K. Dineshkumar, Gnanou Florence Sudha
The cascode configuration of the low-noise amplifier provides high gain, better stability, and improved reliability at the high-frequency range. The noise contributed to the cascode topology is reduced by the inductive degeneration technique. The small signal model for the cascode inductive degeneration topology is presented in Figure 4, which is implemented to determine gain and impedance. Equations (2)–(4) gives the input impedance , voltage gain and output resistances of the cascode amplifier, respectively.
Design of high gain and high bandwidth operational transconductance amplifier (OTA)
Published in International Journal of Electronics, 2022
Shikha Soni, Vandana Niranjan, Ashwni Kumar
Furthermore, the current reference circuits are amongst one of the most significant building blocks in analog circuit designs. These circuits are accountable in order to determine and evaluate the biasing conditions with the intention of designing a variety of building blocks. Various works are proposed in order to generate the reference current in De Vita & Iannaccone, 2007; Yoo & Park, 2007. However, self biased current schemes or β-multiplier schemes are more preferable owing to their relative ease of system on chip (SoC) implementations (Chouhan & Halonen, 2016; Osipov & Paul, 2017). Additionally, the cascode (series combination of common source and common gate topology) amplifier is extensively used in order to achieve high transconductance and superior gain for designed operational amplifier. Moreover, the folded cascode scheme is an enhanced version of normal cascode topology enabling low-power application with superior gain bandwidth.
Design and Analysis of 2.4 GHz Low-Noise, High-Gain 0.18 μm CMOS Cascode Low-Noise Amplifier for IRNSS Applications
Published in IETE Journal of Research, 2022
D. Jahnavi, G. Kavya, Anjana Jyothi Banu
The basic cascode topology, shown in Figure 3, is designed by cascading common source and common gate devices. The cascode device is a unilateral circuit essentially used for improving the stability of the amplifier. Cascode configuration of CMOS LNA endorse better scope to provide concurrently high gain, improves reliability and wide frequency range with reasonable noise figure.