2.4 A 0.028mm2 11mW single-mixing blocker-tolerant receiver with double-RF N-path filtering, S11 centering, +13dBm OB-IIP3 and 1.5-to-2.9dB NF
2.4 A 0.028mm2 11mW single-mixing blocker-tolerant receiver with double-RF N-path filtering, S11 centering, +13dBm OB-IIP3 and 1.5-to-2.9dB NF
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2.4 A 0.028mm2 11mW 单混频抗阻塞接收器，具有双 RF N 路径滤波、S11 中心、13dBm OB-IIP3 和 1.5 至 2.9dB NF
DOI：
10.1109/isscc.2015.7062913
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
R. Martins
中科院分区：
文献类型：
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作者：
Zhicheng Lin;Pui;R. Martins
射频可调阻挡容限接收器(RX)以低成本增强了多频段多标准无线电的灵活性(图2.4.1)。混频优先RX[1]通过将BB低通响应频率转换为RF作为带通来延迟到基带(BB)的信号放大。这提高了带外(OB)IIP3(27dBm)，但由于没有射频增益，降低了nF(5.5dBm)和功率(60 MW)。噪声补偿RX[2]通过将电压感测RX与混频优先RX并联，打破了这种折衷。这实现了更好的nF(1.9db)和OB-IIP3(13.5dBm)对，但牺牲了更多的管芯尺寸(1.2 mm2)和功率(<；；78 mW)来适应加倍的RF和BB电路。在[3]中，N路RF滤波和噪声消除在一个电流再用RX中同时实现。该方法在高OB-IIP3(17.4dBm)时节省芯片面积(0.55mm2)和功耗(16.2 mW)，但需要高VDD(2.5V)以扩大电压净空。此外，考虑到其噪声噪声(4.6db)受到输入阻抗匹配要求(S11；-10db)的限制，因此没有灵活性来获得更好的噪声噪声。最后，由于[2]和[3]都涉及两个混合步骤，因此LO功率受到惩罚。
RF-tunable blocker-tolerant receivers (RXs) enhance the flexibility of multiband multistandard radios at low cost (Fig. 2.4.1). The mixer-first RX [1] delays the signal amplification to baseband (BB) by frequency-translating the BB lowpass response to RF as bandpass. This raises the out-of-band (OB) IIP3 (27dBm) at the expense of NF (5.5dB) and power (60mW) due to no RF gain. The noisecancellation RX [2] breaks such a tradeoff by paralleling a voltage-sensing RX with the mixer-first RX. This achieves a better pair of NF (1.9dB) and OB-IIP3 (13.5dBm), but sacrifices more die size (1.2mm2) and power (<;78mW) to accommodate the doubled RF and BB circuits. In [3], N-path RF filtering and noise cancellation are concurrently attained in one current-reuse RX. That approach saves die area (0.55mm2) and power (16.2mW) at a high OB-IIP3 (17.4dBm), but requires a high VDD (2.5V) to widen the voltage headroom. Also, seeing that its NF (4.6dB) is handicapped by the input-impedance matching requirement (S11<;-10dB), there is no flexibility to get better NF. Finally, as both [2] and [3] involve two mixing steps, the LO power is penalized.