DefinePK

Abstract

Nowadays, a number of low noise amplifiers have been developed to cover a multifunction capability such as Ultra wideband system, noise rejection and image rejection WLAN standard, GSM and others. Low noise amplifier is the one of important part in receiver. However, the integration of notch filter will introduce the multifunction which amplify and attenuate at single device. The notch filter commonly used as band rejection to remove unwanted frequency band so it could prevent for interference with other application. This paper presents a compilation of important review about design of low noise amplifier integrated notch filter and a regular low noise amplifier in term of various type of method, circuit, topology, matching technique and materials to cover various types of applications. Parameter reviewed for each paper is based on gain, input return loss and noise figure. In this particular review, hopefully that a greater knowledge of low noise amplifier concept might be developed thereby can have a better future.