A multichannel transceiver design with low hardware complexity, flexibility and efficient spectrum use intended for Impulse Radio (IR) Ultra-Wideband (UWB) apertures, is proposed in this paper. The transceiver supports 14 channels and is implemented in TSMC CMOS process. The transmitter adopts a symmetrical triangular narrow pulse generator, a multiband LC-VCO, a mixer and a Variable-Gain Amplifier. A digital control of transmitter output power and carrier frequency is achieved by a current-steering Digital-to-Analog Converter (CS-DAC). The receiver follows the noncoherent Energy Detection (ED) scheme including Low-Noise Amplifier (LNA) which takes the benefits of the body biasing technique to further reduce power consumption, squarer and comparator. The LNA achieves high gain of up to 30dB allowing to enhance the receiver sensitivity which is −83.7dBm at 25Mbps. The transmitter provides output pulses with a width of 3ns, a pulse repetition rate of 20ns and a maximum Power Spectral Density (PSD) of −42dBm/MHz. The power consumptions of transmitter and receiver are 35.6pJ/bit and 0.207nJ/bit at 25Mbps, respectively. Maximizing utilization of the scarce wireless spectrum, enhancing spectral flexibility and efficiency and reducing power consumption are the main contributions brought by this work, enabling this transceiver to be able to deal with the current debate on producing single multifunctional Cognitive Radio (CR) UWB systems.

中文翻译：

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用于超宽带认知无线电应用的数控多通道频谱效率低功耗收发器

本文提出了一种用于脉冲无线电 (IR) 超宽带 (UWB) 孔径的具有低硬件复杂性、灵活性和高效频谱使用的多通道收发器设计。该收发器支持 14 个通道，采用 TSMC CMOS 工艺实现。发射机采用对称三角窄脉冲发生器，多频段液相色谱-VCO、混频器和可变增益放大器。发射机输出功率和载波频率的数字控制是通过电流导向数模转换器 (CS-DAC) 实现的。接收器采用非相干能量检测 (ED) 方案，包括低噪声放大器 (LNA)，它利用体偏置技术进一步降低功耗、平方器和比较器。LNA 实现高达 30 的高增益dB 允许增强接收器灵敏度，即-83.725 分贝Mbps。发射器提供宽度为 3 的输出脉冲ns，脉冲重复率为 20ns 和最大功率谱密度 (PSD)-42分贝/兆赫。发射器和接收器的功耗为 35.6pJ/bit 和 0.207nJ/bit 在 25Mbps，分别。最大限度地利用稀缺的无线频谱、提高频谱灵活性和效率以及降低功耗是这项工作带来的主要贡献，使该收发器能够应对当前关于生产单一多功能认知无线电 (CR) UWB 系统的争论。