初来乍到，给大家共享几篇安捷论经典LNA的应用文档

Low Noise Amplifiers for 900 MHz using the Agilent ATF-34143Low Noise Amplifiers for 900 MHz using the Agilent ATF-34143 Low Noise PHEMT
Application Note 1190

Introduction Agilent Technologies’ ATF-34143 is a low noise PHEMT designed for use in low cost commercial applications in the VHF through 6 GHz frequency range. The ATF-34143 is housed in a 4-lead SC-70 (SOT-343) surface mount plastic package. The 800 micron gate width of the ATF-34143 makes it ideal for applications in the VHF and lower GHz frequency range by providing low noise figure coincident with high intercept point. The wide gate width also provides lower impedances that are easy to match. The ATF-34143 is described in low noise amplifiers for use in the cellular markets. The circuits are designed for use with 0.032 inch thickness FR-4 printed circuit board material. The amplifiers m