收发机
卡姆
对偶(语法数字)
多波段设备
信号(编程语言)
电信
电气工程
正交调幅
计算机科学
艺术
工程类
无线
误码率
文学类
程序设计语言
频道(广播)
天线(收音机)
作者
Jongsoo Lee,Jaehyuk Jang,Wooseok Lee,Bosung Suh,Heeyong Yoo,Beomyu Park,Jeongkyun Woo,Inhyo Ryu,Honggul Han,Jaeyoung Kim,Ho-Jong Kang,John H. Kang,Minseob Lee,Dan‐Bi Lee,Hyeonuk Son,S. Lee,Soyeon Kim,Dong-Chan Kim,Daeyoung Yoon,Hongjong Park
出处
期刊:IEEE Journal of Solid-state Circuits
[Institute of Electrical and Electronics Engineers]
日期:2024-08-22
卷期号:59 (12): 3966-3979
被引量:6
标识
DOI:10.1109/jssc.2024.3441858
摘要
A high-linearity, wideband transceiver for Wi-Fi 7 to support 4 K-QAM 320 MHz bandwidth (BW) is presented and fabricated using a 14 nm Fin-FET CMOS process. To provide a high-performance local oscillator (LO) signal, a fractional-N sampling phase-locked loop with a high gain sampling phase detector (SPD) is implemented with digital-to-time converter (DTC) non-linearity calibration (NLC) based on a least mean square (LMS) algorithm. The transceiver exhibits excellent integrated phase noise (IPN) performances with a single-core voltage-controlled oscillator (VCO) achieving −54.3 dBc at 7115 MHz frequency channel. IPN performance can be further improved to −55.2 dBc with a dual-core VCO. A wideband frequency operation transmitter (TX) architecture for a 5–7 GHz frequency range is introduced. It utilizes a high Q tunable switched inductor for a wideband matching network and flexible frequency adjustment. A coupling-minimized switched inductor (CMSI) is implemented to cancel out magnetic flux when two inductors are enabled simultaneously. This improves mutual inductance and the Q factor while extending the frequency tuning range. The TX error vector magnitude (TX EVM) floor is achieved up to −46.1 dB at 7.1 GHz, marking the best-reported value to date. A 5/6G receiver (RX) is designed to improve noise performance while maintaining linearity. To achieve this, a resistor attenuator block is introduced between a voltage-to-current (V2I) and a mixer, while a high signal-to-noise-and-distortion ratio (SNDR) performance is maintained in a wider input power range. The RX error vector magnitude (RX EVM) floor is measured as −46 dB at 7.1 GHz. These results demonstrate the transceiver’s excellent performance, making it a promising solution for Wi-Fi 7 applications.
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