A highly efficient and linear 15 GHz GaN power amplifier design for 5G communications

Mayeda, Jill C.; Lie, Donald Y. C.; Lopez, Jerry

doi:10.1109/wmcas.2017.8070699

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…bandwidth from 5 MHz to 20 MHz does not worsen the PA linearity considerably according to the RF/analog/digital cosimulations (data not shown) [26]. Note as the EM in an ET-PA will consume significant power especially for high bandwidth input signal to satisfy PA's linearity requirements, the actual PAE enhancement for this GaN ET-PA needs to be measured against the exact linearity specs for a given 5G waveform in the future as the enhancement is dependent on PAPR and signal bandwidth.…”

Section: With Dynamic Supply Modulationmentioning

confidence: 82%

“…Note most reported GaN X/Ku-bands PAs were for highpower defense or aerospace applications, but we expect GaN PA can be very attractive for the 5G PA market at OUT ∼ 3-10 Watts level per PA. A high-efficiency two-stage fully integrated 15 GHz PA designed in a low-cost 0.25 m GaN/SiC process was reported recently and shown in Figure 6 [26]. Postlayout simulation shows that the PA has a high smallsignal gain 21 of 24 dB, 12 = −41.2 dB, 22 = −10.0 dB, and 11 = −12.3 dB at 15 GHz.…”

Section: G Pa Designed At 15 Ghz In Several Device Technologiesmentioning

confidence: 88%

“…Postlayout SPICE simulations also suggest that dynamic supply modulation from 28 V to 10 V as shown in Figure 14 can significantly improve the PA's efficiency at power back-off, where the PAE improvement at 6 dB backoff is around 10%. When the PA is driven with 5/10/20 MHz LTE 16 QAM modulated signals, the wider modulated signal Figure 14: Postlayout simulation of a 15 GHz 2-stage GaN PA as the DC power supply voltage of the 2nd stage changes from 28 V to 10 V to illustrate the potential efficiency improvement using supply modulation [26].…”

Section: With Dynamic Supply Modulationmentioning

confidence: 99%

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A Review of 5G Power Amplifier Design at cm‐Wave and mm‐Wave Frequencies

Lie

Mayeda

et al. 2018

Wireless Communications and Mobile Computing

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The 5G wireless revolution presents some dramatic challenges to the design of handsets and communication infrastructures, as 5G targets higher than 10 Gbps download speed using millimeter-wave (mm-Wave) spectrum with multiple-input multiple-output (MIMO) antennas, connecting densely deployed wireless devices for Internet-of-Everything (IoE), and very small latency time for ultrareliable machine type communication, etc. The broadband modulation bandwidth for 5G RF transmitters (i.e., maximum possibly even above 1 GHz) demands high-power efficiency and stringent linearity from its power amplifier (PA). Additionally, the phased-array MIMO antennas with numerous RF front-ends (RFFEs) will require unprecedented high integration level with low cost, making the design of 5G PA one of the most challenging tasks. As the centimeter-wave (cm-Wave) 5G systems will probably be deployed on the market earlier than their mm-Wave counterparts, we will review in this paper the latest development on 15 GHz and 28 GHz 5G cm-Wave PAs extensively, while also covering some key mm-Wave PAs in the literature. Our review will focus on the available options of device technologies, novel circuit and system architectures, and efficiency enhancement techniques at power back-off for 5G PA design.

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Section: With Dynamic Supply Modulationmentioning

confidence: 82%

Section: G Pa Designed At 15 Ghz In Several Device Technologiesmentioning

confidence: 88%

Section: With Dynamic Supply Modulationmentioning

confidence: 99%

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A Review of 5G Power Amplifier Design at cm‐Wave and mm‐Wave Frequencies

Lie

Mayeda

et al. 2018

Wireless Communications and Mobile Computing

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“…Several MM-Wave bands are considered one of the potential candidates for the 5G applications due to the availability of an abundant bandwidth and high data rate. Few of these bands include 26 [75], and 57-70 [74]- [76]. MM-Wave bands with the help of the AoCs have provided compact, economical, low-power, large bandwidth and high data-rate based IoT devices and systems; radio-frequencyidentification (RFID) is one example of such devices.…”

Section: A Applications In Mm-wave Bandmentioning

confidence: 99%

The Potentials, Challenges, and Future Directions of On-Chip-Antennas for Emerging Wireless Applications—A Comprehensive Survey

et al. 2019

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The ever-growing demand for low power, high performance, cost-effective, low-profile, and highly integrated wireless systems for emerging applications has triggered the need for the enormous innovations in wireless transceiver systems, components, architectures and technologies. This is especially valid for the antenna which is an integral component of the wireless transceiver systems and contributes significantly in determining their overall performance. Antenna-on-Chip (AoC) is an alternative antenna technology, which has drawn a substantial attention in recent days because of its various benefits over off-chip antenna technology. A few of these benefits include miniaturization, low power, low cost, and high integration of the wireless modules. Motivated by these valuable advantages and to unveil the true potential of the AoCs, this article presents, for the first time, a comprehensive survey of the suitability, advantages, and challenges of the AoCs for the emerging wireless applications such as 5th generation (5G) Wireless Systems, Internet-of-Things (IoT) Wireless Devices and Systems, Wireless Sensor Networks (WSNs), Wireless Interconnects, Wireless Energy Transfer, Radio Frequency (RF) Energy Harvesting, Biomedical Implants, Unmanned Aerial Vehicles (UAVs), Autonomous vehicles, Innovative characterization methods for Integrated Circuits (ICs) and Antennas, and Smart City. In addition, this article presents the current stateof-the-art of the AoC's applications by classifying their applications in Millimeter-Wave (MM-Wave) band, Terahertz (THz) band, and low-frequency bands. The article also investigates and describes some useful methods for the mitigation of the challenges and issues posed by the emerging applications for the realization of the AoCs in a systematic manner. A concise description of the future directions of the AoCs with respect to each emerging application is also a part of this article. It is expected that this well-structured and organized survey will not only act as an excellent source of scholarship for the relevant research community, but also open up a world of novel research opportunities.

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