Advanced frequency converters for the radio front-end of wireless communications transceivers

用于无线通信收发器无线电前端的高级频率转换器

• 批准号: 239240-2011
• 负责人: Saavedra, Carlos
• 金额: $ 2.33万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=524614
• 关键词: Advanced; frequency; converters; radio; front

Frequency converters, also known as mixers, are nonlinear circuits that are critical for sending and receiving information over communications links, such as mobile phone networks. In addition, mixers are needed for the modulation and demodulation of information-carrying signals. Mixer performance is evaluated using several metrics that quantify things such as the conversion gain, the distortion level, or the amount of noise produced by the circuit. The metrics are usually interdependent, which makes it difficult to keep the mixer's metrics at their optimal level when there are changes in the circuit's operating conditions such as the input signal strength levels, or due to temperature variations, or other factors.

变频器也称为混频器，是一种非线性电路，对于通过移动电话网络等通信链路发送和接收信息至关重要。此外，还需要混频器来调制和解调携带信息的信号。混频器性能的评估使用多种量化指标，如转换增益、失真水平或电路产生的噪声量。这些指标通常是相互依赖的，这使得当电路的运行条件发生变化(如输入信号强度电平)、或由于温度变化或其他因素时，很难将混频器的指标保持在最佳水平。