this paper surveys recent research on Low Noise Amplifier (LNA) design for Cognitive Radios (CR). Design challenges and requirements of CR are discussed and recent advances in topologies and design techniques are presented, compared and summarized. The classical trade-offs of linearity, gain, input impedance matching and noise are discussed herein with respect to the Wide Bandwidth requirement....

In this paper Broadband Reconfigurable low Noise Amplifier for Multiband Application is presented. Low noise amplifier is versatile demanded in modern technology, technology demanded amplifier have less reflection and more rejection of noise, in this paper presented differential cross feedback topology and feedback technique for designing of Broadband Reconfigurable low Noise Amplifier, the req...

The paper deals with the numerical and experimental development of single stage radio frequency (RF) amplifier with high gain for 2.4GHz receiver front-ends. The work is motivated by the increasing demand of high-gain receiver amplifier in low-cost especially for wireless local area network (WLAN) application. Prior hardware realization and experimental characterization, the proposed amplifier ...

..4bstract—A novel ultrabroad-band amplifier configuration suitable for GaAs FET’s has been developed. The developed amplifier circuit operates as a capacitor-resistor ( C–R ) coupled mnpfifier circuit in the lowfrequency range in which IS21 I for the GaAs FET’s is constant. It also operates as a lossless impedance matching circuit in the microwave frequency range in which IS21 I for the GaAs F...

Josephson parametric amplifiers are an important part of a modern superconducting quantum computing platform and squeezed states generation devices. Traveling wave impedance-matched provide broad bandwidth for high-fidelity single-shot readout multiple qubit circuits. Here, we present quantum-limited 3-wave-mixing amplifier based on nonlinear asymmetric inductive elements (SNAILs), whose useful...

In this paper, a low-power adaptive low noise amplifier (LNA) is presented. The LNA is based on a bipolar cascode topology, uses inductive source degeneration and emitter area scaling to achieve noise and input-impedance matching simultaneously. The input impedance and the noise factor were simulated as function of the bias collector current and the results show that both are approximately cons...

In this paper the recent trends for noise figure are streamlined in concurrence to Ultra Wide Band (UWB) radio transmission spectrum. A comparative study is made between design of single-stage differential low-noise amplifier and inductor-less broadband LNAs in a digital 45 nm CMOS technology. As we move from inductor less impedance to capacitive impedance, the average noise figure decreases in...

It is shown that allpole filters of secondand third-order can be significantly desensitized to component tolerances by so-called impedance tapering, i.e., successively impedance-scaling upwards the Lsections of a resistance–capacitance ladder network in the forward and feedback path of a single-amplifier active filter. In order to obtain a realizable filter, certain constraints on the design eq...

Compared to voltage mode circuits, current circuits have advantages such as large dynamic range, fast speed, wide frequency band, and good linearity. In recent years, the development of call flow modeling technology has been rapid become an important foundation for analog integrated circuits. this paper, a chaotic oscillation circuit based on differential transconductance amplifier (CDTA) is pr...