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A Blocker-Tolerant Inductor-Less Wideband Receiver With Phase and Thermal
一种无电感宽带接收器架构，通过相位和热噪声抵消技术优化噪声、线性度和功耗。
28nm CMOS, 噪声系数低于14 dB, 频率范围100 MHz至2.8 GHz
宽带接收器相位噪声热噪声无电感CMOS
▸创新点1：相位噪声抵消技术，通过利用相位噪声的对称性，在单音或调制阻塞信号存在时消除互混产物，显著提升接收机的线性度和抗干扰能力。
▸创新点2：热噪声抵消技术，采用热噪声抵消机制，避免在阻塞频率处产生电压增益，从而降低噪声系数，实现从100 MHz到2.8 GHz的2 dB噪声系数。
▸创新点3：无电感设计，包括射频VCO在内的整个接收机均不使用片上电感，简化了电路结构，降低了成本和功耗，同时保持噪声系数在14 dB以下。
▸创新点4：宽频带接收机架构，通过同时抵消相位噪声和热噪声，显著缓解了噪声、带外线性度、LO相位噪声和功耗之间的传统权衡，提升了整体性能。
Abstract
A wideband receiver architecture with simultaneous phase and thermal noise cancellation greatly relaxes the tradi- tional trade-offs between noise, o ut-of-band linearity, LO phase noise and power consumption. The architecture employs thermal noise cancelling and avoids voltage gain at blocker frequencies, and exploits the symmetry of phase noise to cancel the reciprocal mixing products in the presence of either single-tone or modulated b l o c k e r s .T h er e s u l t i n gd e s i g ni n2 8n mC M O Sh a s2d Bn o i s e figure from 100 MHz to 2.8 GHz. Without using any inductors on-chip including the RF VCO, t he receiver's NF is below 14 dB under either a 0 dB CW blocker or a -10 dBm WCDMA blocker.