270-to-300GHz Double-Balanced Parametric Upconverter Using Asymmetric MOS Varactors and a Power-SplittingTransformer Hybrid in 65nm CMOS

📋 论文概要

本文提出了一种工作在270-300GHz的双平衡参量上变频器，采用非对称MOS变容管和功率分配变压器混合结构，旨在解决太赫兹通信发射机中输出1dB压缩点低和带宽不足的问题。

💡 主要创新点

• 首次采用非对称MOS变容管实现双平衡参量上变频，提升线性度和功率处理能力。
• 提出功率分配变压器混合结构，实现宽频带阻抗匹配和信号平衡转换。

🏷 关键词

📄 原文摘要

Oklahoma State University, Stillwater, OK 1 2 Wireless communication at ~300GHz is drawing attention due to its potential to support a high data-rate using the wide available bandwidth. Transmitters operating at ~300GHz have been reported in [1-5]. In order to support the high-order modulation, high datarate, and an increased range, the transmitter must have a high output 1dB compression point (OP1dB) and a wide bandwidth. Unfortunately, instead of OP1dB, only the saturated output power levels, Psat, of the CMOS transmitters [3-5] are reported. A 272GHz CMOS amplifier has been reported in [6], but it only achieves an OP1dB of -10.18dBm and a 3dB bandwidth of less than 5GHz. Broadband power amplification at 300GHz in CMOS is not practical since the transistor fmax is ~350GHz or less. Due to this, the CMOStransmitter linear output power is limited by the upconversion mixer OP1dB. Unfortunately, the mixers operating near 300GHz suffer from low conversion gain (CG)

👥 作者与机构

Zhiyu Chen1, Wooyeol Choi2, Kenneth O1

University of Texas, Dallas, TX