DefinePK

Abstract

GPS has evolved from a military project to an invincible element of day to day life. The accuracy of predicting the three factors of location, movement and time transfer by a GPS device depend on its receiver quality. A front end of a receiver primarily consists of amplifiers, filter and mixer. LNA is the most important component of the front end as it dominates the overall noise Figure as per the frii's formula. Here we discuss the complete design of an LNA using Siemens CFY65 HEMT using Agilent Advanced Design systems software at the L1 band of 1.575GHz. We obtain a high gain of 15.85dB and very low noise Figure of 0.58 dB at the design frequency.