CMOS Power Amplifier Integrated Circuit With Dual-Mode Supply Modulator for Mobile Terminals

Ham, Junghyun; Bae, Ji Cheol; Kim, Hyungchul; Seo, Munkyo; Lee, Hwiseob; Hwang, Keum Cheol; Lee, Kang-Yoon; Park, Cheon-Seok; Heo, Deukhyoun; Yang, Youngoo

doi:10.1109/tcsi.2015.2512703

Cited by 45 publications

(21 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This CMOS PA also utilizes 2nd harmonic control circuits at the input and the output of the PA to enhance efficiency. Ham et al [33] proposed a CMOS PA with dual-mode supply modulator which is utilized for envelope tracking (ET) and average power tracking. The dual-mode supply modulator is based on hybrid buck converter that consists of a switching amplifier and a wideband linear amplifier.…”

Section: Envelope Tracking Pamentioning

confidence: 99%

Energy efficiency in CMOS power amplifier designs for ultralow power mobile wireless communication systems

Mariappan¹,

Rajendran²,

Noh³

et al. 2020

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

Wireless communication standards keep evolving so that the requirement for high data rate operation can be fulfilled. This leads to the efforts in designing high linearity and low power consumption radio frequency power amplifier (RFPA) to support high data rate signal transmission and preserving battery life. The percentage of the DC power of the transceiver utilized by the power amplifier (PA) depends on the efficiency of the PA, user data rate, propagation conditions, signal modulations, and communication protocols. For example, the PA of a WLAN transceiver consumes 49% of the overall efficiency from the transmitter. Hence, operating the PA with minimum power consumption without trading-off the linearity is vital in order to achieve the goal of fully integrated system-on-chip (SoC) solution for 4G and 5G transceivers. In this paper, the efficiency in CMOS PA is discussed through the review of multifarious efficiency enhancement techniques in CMOS PA design. This is categorized into the review of efficiency in fundamental classes of PA in which Class E achieves the highest efficiency of 67%, followed by complex architectures utilized to enhance the efficiency level of the PA in which the outphasing architecture achieved the highest efficiency of 60.7%.

show abstract

Section: Envelope Tracking Pamentioning

confidence: 99%

Energy efficiency in CMOS power amplifier designs for ultralow power mobile wireless communication systems

Mariappan¹,

Rajendran²,

Noh³

et al. 2020

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

show abstract

“…A transistor-resizing technique for the PA to increase its efficiency is described in [24]. In [22] a two level linear amplifier supply is presented, a low bandwidth dynamic linear amplifier supply is explained in [26], and a multi-level linear amplifier supply is illustrated in [30]. An envelope shaping function to reduce nonlinear characteristics in the low supply voltage region is introduced in [20].…”

Section: Dissertation Outlinementioning

confidence: 99%

A High Slew-Rate Adaptive Biasing Hybrid Envelope Tracking Supply Modulator for LTE Applications

Yue

Bakkaloglu

2017

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

As wireless communication enters smartphone era, more complicated communication technologies are being used to transmit higher data rate. Power amplifier (PA) has to work in back-off region, while this inevitably reduces battery life for cellphones.Various techniques have been reported to increase PA efficiency, such as envelope elimination and restoration (EER) and envelope tracking (ET). However, state of the art ET supply modulators failed to address high efficiency, high slew rate, and accurate tracking concurrently.In this dissertation, a linear-switch mode hybrid ET supply modulator utilizing adaptive biasing and gain enhanced current mirror operational transconductance amplifier (OTA) with class-AB output stage in parallel with a switching regulator is presented. In comparison to a conventional OTA design with similar quiescent current consumption, proposed approach improves positive and negative slew rate from 50 V/µs to 93.4 V/µs and -87 V/µs to -152.5 V/µs respectively, dc gain from 45 dB to 67 dB while consuming same amount of quiescent current. The proposed hybrid supply modulator achieves 83% peak efficiency, power added efficiency (PAE) of 42.3% at 26.2 dBm for a 10 MHz 7.24 dB peak-to-average power ratio (PAPR) LTE signal and improves PAE by 8% at 6 dB back off from 26.2 dBm power amplifier (PA) output power with respect to fixed supply. With a 10 MHz 7.24 dB PAPR QPSK LTE signal the ET PA system achieves adjacent channel leakage ratio (ACLR) of -37.7 dBc and error vector magnitude (EVM) of 4.5% at 26.2 dBm PA output power, while with a 10 MHz 8.15 dB PAPR 64QAM LTE signal the ET PA system achieves ACLR of -35.6 dBc and EVM of 6% at 26 dBm PA output power ii without digital pre-distortion (DPD). The proposed supply modulator core circuit occupies 1.1 mm 2 die area, and is fabricated in a 0.18 µm CMOS technology.iii To My Parents and Family iv ACKNOWLEDGMENTS

show abstract

“…Recently, Radio Frequency (RF) and microwave devices integration have become a popular design concept. Integrated-power amplifier modulator [1], amplifier integrated with RF switch [2,3], and integrated-filter antenna [4] are examples of such integrated devices.…”

Section: Introductionmentioning

confidence: 99%

Absorptive Filter Integrated Single Pole Double Throw Switch Using Switchable T-Shape Resonator for Iot Applications

Shairi¹,

Zakaria²,

Wong³

et al. 2020

PIER C

View full text Add to dashboard Cite

In this paper, an absorptive filter-integrated switch (FIS) using switchable T-shape resonators is presented. The FIS was made up of two absorptive T-shape resonators and integrated with single pole double throw (SPDT) switch. A simple mathematical analysis of isolation and insertion loss of filter-integrated SPDT switch is discussed. PIN diodes were used as the switching elements for the SPDT switch and to reconfigure between the band-stop and bandpass responses. The proposed absorptive FIS design could be used for internet of things (IoT) applications such as Zigbee and Bluetooth at an operation frequency of 2.45 GHz. As a result, the proposed FIS exhibited low magnitude of insertion loss and high isolation. Therefore, the key advantages of the proposed FIS design are low insertion loss, high isolation, and good return loss at both ON-and OFF-state ports.

show abstract

CMOS Power Amplifier Integrated Circuit With Dual-Mode Supply Modulator for Mobile Terminals

Cited by 45 publications

References 23 publications

Energy efficiency in CMOS power amplifier designs for ultralow power mobile wireless communication systems

Energy efficiency in CMOS power amplifier designs for ultralow power mobile wireless communication systems

A High Slew-Rate Adaptive Biasing Hybrid Envelope Tracking Supply Modulator for LTE Applications

Absorptive Filter Integrated Single Pole Double Throw Switch Using Switchable T-Shape Resonator for Iot Applications

Contact Info

Product

Resources

About