This paper describes a balanced frequency shift keying (FSK) modulation, namely quasi-balanced FSK (QB-FSK), for energy-efficient high-data-rate communication. Not suffering from data-pattern dependency, the proposed modulation method enables frequency modulation (FM) over 100 Mb/s by utilizing a wideband phase-locked loop (PLL). The QB-FSK signal is generated with the same baseband clock frequency as the non-return zero (NRZ)-coded binary FSK (BFSK) signal, resulting in improved bandwidth efficiency compared to other balanced FSK signals. For demodulation, the receiver employs a sideband energy detection (SB-ED) method. A FM discriminator converts the QB-FSK signal to an on-off keying (OOK) signal. After that, a band-pass filter (BPF) is used to filter out 1/f noise and dc offset. Based on the proposed QB-FSK modulation and the SB-ED method, a prototype FSK transceiver is implemented in 65-nm CMOS for high-data-rate sub-6-GHz proprietary wireless connectivity. The receiver successfully demodulates data at a rate of 200 Mb/s with a sensitivity of –67 dBm, while the transmitter can achieve a maximum data rate of 400 Mb/s. The 200-Mb/s transceiver achieves an energy efficiency of 0.14 nJ/b.

中文翻译：

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具有基于 PLL 的调制和边带能量检测功能的 0.14nJ/b 200Mb/s 2.7–3.5GHz 准平衡 FSK 收发器

本文描述了一种平衡频移键控 (FSK) 调制，即准平衡 FSK (QB-FSK)，用于节能高数据速率通信。所提出的调制方法不受数据模式依赖性的影响，可利用宽带锁相环 (PLL) 实现超过 100 Mb/s 的频率调制 (FM)。 QB-FSK 信号采用与不归零 (NRZ) 编码二进制 FSK (BFSK) 信号相同的基带时钟频率生成，与其他平衡 FSK 信号相比，可提高带宽效率。对于解调，接收器采用边带能量检测（SB-ED）方法。 FM 鉴频器将 QB-FSK 信号转换为开关键控 (OOK) 信号。之后，使用带通滤波器 (BPF) 滤除 1/f 噪声和直流偏移。基于所提出的 QB-FSK 调制和 SB-ED 方法，原型 FSK 收发器在 65 nm CMOS 中实现，用于高数据速率低于 6 GHz 的专有无线连接。接收器成功解调数据速率为 200 Mb/s，灵敏度为 –67 dBm，而发射器可实现最大数据速率 400 Mb/s。 200 Mb/s 收发器的能源效率为 0.14 nJ/b。