A wideband, low-noise superconducting amplifier with high dynamic range

A Wideband, Low-Noise Superconducting Amplifier with High Dynamic Range

Amplifiers are ubiquitous in electronics and play a fundamental role in a wide range of scientific measurements. From a user’s perspective, an ideal amplifier has very low noise, operates over a broad frequency range, and has a high dynamic range it is capable of handling strong signals with little distortion. Unfortunately, it is difficult to obtain all of these characteristics simultaneously....

Wideband High Dynamic Range Limiting Amplifier

Many modern EW systems require low noise receivers capable of withstanding wide input power variations over a multioctave bandwidth. These receivers are necessary to protect sensitive components from RF overdrive or to remove AM modulation from incoming signals. Further, multichannel system designs and proximity to the receiver antenna generate requirements for low power and small package size....

A New Ultra-Wideband Low Noise Amplifier With Continuous Gain Control

This paper presents a new variable gain low noise amplifier (VG-LNA) for ultra-wideband (UWB) applications. The proposed VG-LNA uses a common-source (CS) with a shunt-shunt active feedback as an input stage to realize input matching and partial noise cancelling. An output stage consists of a gain-boosted CS cascode and a gain control circuit that moves the high resonant frequency to higher freq...

A High Dynamic Range Amplifier for Wideband Active Loop Antennas

Efficient Wideband High Gain Low Noise Amplifier in Modern Radars

in this paper a wideband single stage pseudomorphic high electron mobility transistor (PHMET) amplifier has been designed at 5.8 GHz, the input and output matching circuits have a pi form.Noise cancelling principle and sensitivity analysis are performed .Simulation results have been compared with their correspondence in [10] give 2.71 dB improvement in amplifier gain at the same noise figure (N...