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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A Multi-Branch Receiver With Modulated Mixer Clocks for Concurrent Dual-Carrier Reception and Rapid Compressive-Sampling Spectrum Scanning
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A Multi-Branch Receiver With Modulated Mixer Clocks for Concurrent Dual-Carrier Reception and Rapid Compressive-Sampling Spectrum Scanning

机译：具有用于并发双载波接收和快速压缩采样频谱扫描的调制混频器时钟的多分支接收器

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摘要

A multi-branch receiver is introduced that uses mixer-clock modulation to unify the functions of single-carrier and concurrent dual-carrier reception, as well as compressive-sampling spectrum scanning into a single architecture. With CW-modulated mixer clocks, the receiver achieves concurrent reception from two distinct bands and realizes tuned impedance matching that greatly improves its out-of-band (OB) linearity. With pseudo-noise (PN)-modulated mixer clocks, the receiver supports rapid spectrum scanning. Disabling modulation reverts the receiver to a single-carrier receiver with good OB linearity. A 65-nm CMOS prototype is presented that offers 2.7-dB minimum NF, -1.3-dBm B1dB, and +8-dBm IIP3 for high-sensitivity single-carrier reception. Concurrent dual-carrier reception at 500 and 900 MHz is demonstrated that offers -8.4-dBm B1dB and sub-6-dB NF. In the CS spectrum scanning mode, the receiver achieves a 66-dB dynamic range with -75-dBm sensitivity over a 630-MHz RF span and consumes 18.7 nJ per detected signal.
机译：引入了一种多分支接收器，其使用混频器时钟调制来统一单载波和并发双载波接收的功能，以及压缩采样频谱扫描到单个架构中。利用CW调制混频器时钟，接收器从两个不同的频带实现并发接收，并实现调谐阻抗匹配，从而大大提高其带外（OB）线性度。使用伪噪声（PN） - 典型的混频器时钟，接收器支持快速频谱扫描。禁用调制将接收器恢复为具有良好OB线性的单载波接收器。提出了65 nm CMOS原型，提供2.7 dB最小NF，-1.3-DBM B1DB和+ 8 dBm IIP3，用于高灵敏度单载波接收。在500和900MHz处的并发双载波接收，可以说明-8.4-DBM B1DB和Sub-6-DB NF。在CS频谱扫描模式中，接收器通过630MHz的RF跨度达到-75-DBM敏感性的66dB动态范围，并每次检测到信号18.7 NJ。

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