A dual band (2G/5G) IEEE 802.11b/g/n/ac 80MHz bandwidth AMAM envelope feedback power amplifier with digital pre-distortion

Tam, Sai-Wang; Lei, Yuan; Nick, Morteza; Yun, Zhao; Wong, Angela F. L.; Winoto, Renaldi; Lin, Longyang

doi:10.1109/rfic.2015.7337720

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…The value 𝑣 𝑜𝑢𝑡 1,2 in (11) is the voltage at the drain of CG at stage-1/2 that is fed to one end primary port of the transformer. The 𝑣 𝑖𝑛 1,2 is the input voltage at the gate of the CS amplifier (which is represented by 𝑣 𝑖𝑛 in Fig.…”

Section: Impedance and Gainmentioning

confidence: 99%

“…Efficiency is a key parameter for WLAN applications, even though switching PAs offers better efficiency, they don't offer the required linearity. Class-AB/B is PAs are extensively adopted due to their superior linearity 10,11,12,13 . The popular technique to enhance the linearity is to suppress the 2 𝑛𝑑 , 3 𝑟𝑑 harmonics using LC techniques, use Digital Pre-Distortion (DPD) to reduce AM-PM deviation and adapt active feedback linearizer which has the complementary characteristic to the main amplifier.…”

Section: Introductionmentioning

confidence: 99%

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A 802.11ax, WiFi-6E power amplifier with linear driver in CMOS 65nm for WLAN application

2023

Preprint

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This paper proposes a WLAN 802.11ax multi-standard, dual-band Power Amplifier (PA) designed for wireless communication applications. The PA operates across a range of WLAN standards, including 802.11 a/n/p/ac/ax, within the frequency range of 5.125GHz to 7.050GHz. The proposed PA consists of a cascaded two-stage design, the first stage is a driver stage and the second amplification stage is configured as a differential cascode. On-Chip transformers are used as a balun and for impedance matching. The PA is implemented using UMC 65 nm CMOS technology, with core area occupying 0.24 m m 2 . The results demonstrate slight gain expansion at 6GHz, with gain of 20dB, output 1-dB compression point ( P 1 - dB ) of 24.5dB, and Power Added Efficiency (PAE) of 18.9% for continuous wave (CW) signals. For 802.11ax MCS-11 signal, the PA achieves an average power output ( P out ) of more than 17dBm at Error Vector Magnitude (EVM)≤-35dB, and peak Power Added Efficiency (PAE) of 5.6% across the 5GHz and 6GHz bands. The proposed PA exhibits robust performance in process, voltage, and temperature (PVT) analysis, with the worst corner delivering an average power nearly 10dBm. Most of the recent related literature limits the study of PA for WiFi applications to 6GHz, this paper extends the study upto 7.050GHz.

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Section: Impedance and Gainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A 802.11ax, WiFi-6E power amplifier with linear driver in CMOS 65nm for WLAN application

2023

Preprint

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“…III-V technologies, such as GaAs and GaN, are widely used for high-power and high-efficiency PAs for the Sub-6GHz band due to high electron mobility and high breakdown voltage [2,3,4,5,6]. By contrast, Si-based processes are attractive for their ease of integration and low cost [7,8,9]. However, it is fairly challenging to improve the linearity of Si-based PAs.…”

Section: Introductionmentioning

confidence: 99%

A 4.4-6.4-GHz compact SiGe power amplifier with 30.5-dBm psat and 34.8% PAE based on triple-tank power combiner

Liu,

Ma,

et al. 2023

IEICE Electron. Express

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This letter presents a broadband compact watt-level highefficiency power amplifier (PA) in 0.35-μm SiGe BiCMOS process. A four-way triple-tank-based power combiner is introduced and theoretically analyzed in detail with the consideration of the undesired inductor in the third tank. The coupling coefficient and the uncoupling resonant frequencies of the tanks can be adjusted to compensate for the deterioration caused by the undesired inductor, achieving broadband and low-loss matching. The proposed PA operates over 4.4-6.4 GHz and exhibits a peak gain of 35.2 dB, a maximum saturated output power (Psat) of 30.5 dBm, and a peak power added efficiency (PAE) of 34.8% at 5.4 GHz.

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A Triple-Band Radio for WLAN 11b/g/n/ax in 45nm CMOS

Sahu,

Srinivas,

Chatterjee

et al. 2023

2023 IEEE Asian Solid-State Circuits Conference (A-Sscc)

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A dual band (2G/5G) IEEE 802.11b/g/n/ac 80MHz bandwidth AMAM envelope feedback power amplifier with digital pre-distortion

Cited by 8 publications

References 5 publications

A 802.11ax, WiFi-6E power amplifier with linear driver in CMOS 65nm for WLAN application

A 802.11ax, WiFi-6E power amplifier with linear driver in CMOS 65nm for WLAN application

A 4.4-6.4-GHz compact SiGe power amplifier with 30.5-dBm psat and 34.8% PAE based on triple-tank power combiner

A Triple-Band Radio for WLAN 11b/g/n/ax in 45nm CMOS

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