A dual-band 802.11abgn/ac transceiver with integrated PA and T/R switch in a digital noise controlled SoC

2015 IEEE Custom Integrated Circuits Conference (CICC) Pub Date : 2015-11-30 DOI:10.1109/CICC.2015.7338361

Y. Chung, Che-Hung Liao, Chun-Wei Lin, Y. Shih, Chin-Fu Li, Meng-Hsiung Hung, Mingchung Liu, Pi-An Wu, Jui-Lin Hsu, Ming-Yeh Hsu, Sheng-Hao Chen, Po-Yu Chang, Chih-Hao Chen, Yu-Hsien Chang, Jun-Yu Chen, Tao-Yao Chang, G. Chien

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引用次数: 10

Abstract

This paper describes a dual-band 802.11abgn/ac compliant transceiver in a 4-in-l combo connectivity SoC. It integrates the PAs, LNAs, T/R switches, and the 5GHz Balun. Due to the transmitter architecture and adaptive biasing scheme both are tailored for wide bandwidth, the 5GHz transmitter achieves 18.2dBm average output power for 802.11ac VHT80 MCS9 (Modulation and Coding Scheme 9). Within the 80MHz channel bandwidth, the IQ mismatch becomes frequency dependent, and is compensated through calibration. In the 2.4GHz transmitter, its PA load-line is adjustable. The power efficiency is thus remained similarly regardless the output power is at 20dBm for long range operation, or 8dBm for short range operation. By controlling the turn-on resistance of power island switch in digital baseband, and properly sizing the filler cap, the switching noise can be well controlled. The chip occupies 24.9mm2 in 55nm 1P6M CMOS technology, where 1.3mm2 is for 5GHz WLAN and 2.1mm2 is for 2.4GHz WLAN/BT.

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在数字噪声控制SoC中集成了PA和T/R开关的双频802.11abgn/ac收发器

本文描述了一个4合1组合连接SoC中的双频802.11abgn/ac兼容收发器。它集成了pa、lna、T/R开关和5GHz Balun。由于发射机架构和自适应偏置方案都是为宽带定制的，5GHz发射机在802.11ac VHT80 MCS9(调制和编码方案9)下实现18.2dBm的平均输出功率。在80MHz信道带宽内，IQ失配成为频率依赖，并通过校准进行补偿。在2.4GHz发射机中，其PA负载线是可调的。因此，无论输出功率为20dBm用于长距离操作，还是8dBm用于短程操作，功率效率都保持相似。通过控制数字基带功率岛开关的导通电阻，适当选择填充帽的尺寸，可以很好地控制开关噪声。该芯片采用55nm 1P6M CMOS技术，占地24.9mm2，其中1.3mm2用于5GHz WLAN, 2.1mm2用于2.4GHz WLAN/BT。

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2015 IEEE Custom Integrated Circuits Conference (CICC)

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