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Linear Technology公司开发出具有高线性、宽动态范围的有源下变频RF 混频器。这种型号为LT5527的RF混频器的集成度高,可简化3G蜂窝基站的设计。LT5527型有源双平衡RF混频器的工作频率为400 MHz-3.7 GHz。1. 9 GHz下该混频器的输入三阶截取点(IIP3)为23.5 dBm,变频增益2.3 dB,噪声系数12.5 dB。它还满足3G蜂窝基站及其它高性能无线基础设备接收机的动态范围要求。LT5527的本振(LO)和RF输入为单端控制,并内置50 Ω阻抗,仅需少量外部匹配元件,这就减少了基站成本和设计时间。
Linear Technology Corporation has developed an active, downconverting, RF mixer with high linearity and wide dynamic range. The high integration of this model, the LT5527 RF mixer, simplifies the design of 3G cellular base stations. The LT5527 active double balanced RF mixer operates from 400 MHz to 3.7 GHz. 1. The input third-order intercept point (IIP3) of this mixer at 23 GHz is 23.5 dBm with a gain of 2.3 dB and a noise figure of 12.5 dB. It also meets the dynamic range requirements of 3G cellular base stations and other high performance wireless infrastructure receivers. The LT5527’s LO and RF inputs are single-ended and have a 50 Ω internal impedance, requiring only a small number of external matching components, reducing base station costs and design time.