Down-Conversion Mixer Using Quadrature Hybrid Couple and Schottky Diode for S-Band Radar Application

摘要

In the superheterodyne receiver system needs frequency translation process between the Radio Frequency (RF) signal and Local Oscilator (LO) signal. The process will converts RF to Intermediate Frequency (IF). In this paper, present designed and realized a down-conversion mixer which operates at S-band frequency for coastal-radar application. In the design process, the advanced design system (ADS 2011.11) software is applied to design and simulate it. This mixer has been built by using 90