NXP的LNA无线解决方案

NXP的LNA无线解决方案

NXP 无线模块BUF725 简介：NXP的BUF725的可应用在GPS 的外置电线中。其特点表现为：

1）截止频率可以做到一百GHz以上，可以很好的工作在10GHz频率以下。2）与硅工艺兼容，

易与CMOS 集成3）相对GaAs，有成本优势4）从性能来说，SiGe 射频器件噪声低，开关速

度快，温度特性好，输出功率大，效率高。特征描述：The BFU725F/N1 is a wideband silicon

germanium amplifier transistor for high speed,low-noise applications. The transistor

is designed to be used for LNA applications up to15 GHz such as GPS, satellite radio,

cordless phone, wireless LAN and satellite LNB. TheBFU725F/N1 is packaged in a SOT343F

that has 2 emitter pins to reduce emitterinductance (for maximum gain).The BFU725F/N1

is ideal for applications where cost is a concern. It also gives thedesigner

flexibility in his design work, for bias current, frequency of operation,noise-figure,

gain and P1dB.方案介绍：The demonstration boardenables testing of the device

performance and requires no additional support circuitry.The board is fully assembled

with the BFU725F/N1, including input- and output-matching,to optimize the

performance. For input matching, a compromise must be made betweenoptimum

noise/maximum gain/RL/usable bandwidth of the application and customerrequirements.

The board is mounted with signal input and output SMA connectors forconnection to

RF test equipment.基本参数Frequency (GHz) Noise figure (dB) Associated

gain (dB)1.5 0.42 242.4 0.47 205.8 0.7 13.512 1.1 10参考原

理图：参考PCB图：详情请参见：/documents/user_manual/UM10483.pdf