Compact high‐linearity, high‐efficiency complementary metal–oxide–semiconductor power amplifier with post‐distortion lineariser for wireless local area network and Wireless Gigabit Alliance applications

2016 ◽  
Vol 10 (4) ◽  
pp. 464-470 ◽  
Author(s):  
Kuei‐Cheng Lin ◽  
Hwann‐Kaeo Chiou ◽  
Chun‐Lin Ko ◽  
Po‐Chang Wu ◽  
Hann‐Huei Tsai ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Power Amplifier ◽  
High Efficiency ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Complementary Metal Oxide Semiconductor ◽  
Local Area ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Area Network

scholarly journals Antiphase Method of the CMOS Power Amplifier Using PMOS Driver Stage to Enhance Linearity

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 103
Author(s):  
Jiwon Kim ◽  
Changhyun Lee ◽  
Jinho Yoo ◽  
Changkun Park
Keyword(s):  
Metal Oxide ◽  
Power Amplifier ◽  
Local Area Network ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Positive Sign ◽  
Common Source ◽  
Area Network ◽  
Power Added Efficiency ◽  
Power Stage

We present the possibility of a complementary metal-oxide semiconductor (CMOS) power amplifier (PA) using a driver stage composed of p-channel metal oxide semiconductor (PMOS) to enhance linearity. The PMOS driver stage is designed as a cascode structure to adapt the antiphase technique to the CMOS PA. By biasing the common-source transistor of the driver stage at the subthreshold region, we obtain a gm3 value with a positive sign to cancel out the negative gm3 of the power stage, thereby enhancing the linearity. We also investigate the effect of the bias of the cascode transistor of the driver stage on third-order intermodulation distortion and amplitude-to-phase distortion. Consequently, we show that the PMOS driver stage itself acts as a pre-distorter of the power stage. To verify the possibility of the PMOS driver stage and the proposed biasing method for the antiphase technique, we design a 2.42 GHz PA using a 180 nm RFCMOS process for wireless local area network applications. We obtain a measured maximum linear output power of 21.5 dBm with a 23.4% power-added efficiency and an error vector magnitude of 3.14%. We use an 802.11 n modulated signal with 64-quadrature amplitude modulation (QAM) (MCS7) at 65 Mb/s.

Based on VPN Tunnel Technology of Wireless Local Area Network

2012 ◽  
Vol 546-547 ◽  
pp. 1188-1193
Author(s):  
Zhen Jun Luo ◽  
Ying Jiang Zhang ◽  
Juan Qin
Keyword(s):  
High Efficiency ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network

This paper analyzes the wireless local area network existing safety and efficiency problem. It put forward the VPN tunnel technology to solve these problems. Theory explains that it is very the advantages of layer second tunneling protocol in a wireless local area network. This technology is proved to be reliable by Network Simulate 2 tool. It is proved that the technique is the advantage of high efficiency and safety.

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