A 39GHz 64-Element Phased-Array CMOS Transceiver with Built-in Calibration for Large-Array 5G NR

This article presents the first 39-GHz phased-array transceiver (TRX) chipset for fifth-generation new radio (5G NR). The proposed transceiver chipset consists of 4 sub-array TRX elements with local-oscillator (LO) phase-shifting architecture and built-in calibration on phase and amplitude. The calibration scheme is proposed to alleviate phase and amplitude mismatch between each sub-array TRX element, especially for a large-array transceiver system in the base station (BS). Based on LO phase-shifting architecture, the transceiver has a 0.04-dB maximum gain variation over the 360 • full tuning range, allowing constant-gain characteristic during phase calibration. A phaseto-digital converter (PDC) and a high-resolution phase-detection mechanism are proposed for highly accurate phase calibration. The built-in calibration has a measured accuracy of 0.08°rms phase error and 0.01-dB rms amplitude error. Moreover, a pseudo-single-balanced mixer is proposed for LO-feedthrough (LOFT) cancellation and sub-array TRX LO-to-LO isolation. The transceiver is fabricated in standard 65-nm CMOS technology with flip-chip packaging. The 8TX-8RX phased-array transceiver module 1-m OTA measurement supports 5G NR 400-MHz 256-QAM OFDMA modulation with −30.0-dB EVM. The 64-element transceiver has a EIRP MAX of 53 dBm. The four-element chip consumes a power of 1.5 W in the TX mode and 0.5 W in the RX mode.

show abstract

“…This article is an extension of [41], and it is organized as follows. Section II discusses the proposed calibration scheme.…”

Section: Introductionmentioning

confidence: 99%

A 39-GHz 64-Element Phased-Array Transceiver With Built-In Phase and Amplitude Calibrations for Large-Array 5G NR in 65-nm CMOS

Wang

Pang

et al. 2020

IEEE J. Solid-State Circuits

Self Cite

135

View full text Add to dashboard Cite

show abstract

“…To calibrate the mismatches between different element beamformers, the magnitude and phase detection circuits similar to [11] are also included in this work. The signals for IEEE JOURNAL OF SOLID-STATE CIRCUITS Fig.…”

Section: Transceiver Implementation and Measurementmentioning

confidence: 99%

“…However, to realize the 5G millimeter-wave DP-MIMO systems, which require numerous transceiver paths, the conventional phasedarray solutions are still expensive regarding the total die area. [11] and [12] based on the LO phase shifting architecture realize gain-invariant and high-resolution phase shifting. However, additional power and area are consumed for the distributed LO.…”

Section: Introductionmentioning

confidence: 99%

A 28-GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NR

Pang

Zheng

Kubozoe

et al. 2020

IEEE J. Solid-State Circuits

Self Cite

View full text Add to dashboard Cite

This article presents a low-cost and area-efficient 28-GHz CMOS phased-array beamformer chip for 5G millimeter-wave dual-polarized multiple-in-multiple-out (MIMO) (DP-MIMO) systems. A neutralized bi-directional technique is introduced in this work to reduce the chip area significantly. With the proposed technique, completely the same circuit chain is shared between the transmitter and receiver. To further minimize the area, an active bi-directional vector-summing phase shifter is also introduced. Area-efficient and high-resolution active phase shifting could be realized in both TX and RX modes. In measurement, the achieved saturated output power for the TX-mode beamformer is 15.1 dBm. The RX-mode noise figure is 4.2 dB at 28 GHz. To evaluate the over-the-air performance, 16 H+16 V sub-array modules are implemented in this work. Each of the sub-array modules consists of four 4 H+4 V chips. Two subarray modules in this work are capable of scanning the beam from −50 • to +50 •. A saturated EIRP of 45.6 dBm is realized by 32 TX-mode beamformers. Within 1-m distance, a maximum SC-mode data rate of 15 Gb/s and the 5G new radio downlink packets transmission in 256-QAM could be supported by the module. A 2 × 2 DP-MIMO communication is also demonstrated with two 5G new radio 64-QAM uplink streams. Thanks to

show abstract

“…For each domain listed above, there is a direct relation between the desired performance level and the total number of active elements in the antenna array. The baseline in the state-of-the-art mm-wave 5G base station antenna arrays from leading companies, such as Ericsson [5], Nokia [6], IBM [7], NXP [8], and NEC [9], is to use a maximum of 64 elements, in a dense (around 0.5λ-spaced) and periodic arrangement. Then, the question arises: Is this the optimal element number and array configuration from the system perspective?…”

mentioning

confidence: 99%

System Advantages of Using Large-Scale Aperiodic Array Topologies in Future mm-Wave 5G/6G Base Stations: An Interdisciplinary Look

Aslan

Rœderer

Yarovoy

2022

IEEE Systems Journal

View full text Add to dashboard Cite

The encouraging potential of employing large-scale aperiodic base station arrays in addressing the radiation pattern and thermal requirements of the next generation communication systems is demonstrated. Sample 256-element layout-optimized multibeam arrays are presented as a futuristic view. The system benefits (in terms of the statistical quality-of-service, energy efficiency, thermal management, and processing burden) of the proposed arrays, as well as their performance versus design complexity tradeoffs, are explained through interdisciplinary simulations.The key advantage of the proposed antennas over the currently proposed 64-element periodic arrays is identified as the increased gain with much lower side lobes, which yields much less power and less heat per element with more surface for cooling, and allows robust/computationally efficient precoding.

show abstract

A 39GHz 64-Element Phased-Array CMOS Transceiver with Built-in Calibration for Large-Array 5G NR

Cited by 22 publications

References 6 publications

A 39-GHz 64-Element Phased-Array Transceiver With Built-In Phase and Amplitude Calibrations for Large-Array 5G NR in 65-nm CMOS

A 39-GHz 64-Element Phased-Array Transceiver With Built-In Phase and Amplitude Calibrations for Large-Array 5G NR in 65-nm CMOS

A 28-GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NR

System Advantages of Using Large-Scale Aperiodic Array Topologies in Future mm-Wave 5G/6G Base Stations: An Interdisciplinary Look

Contact Info

Product

Resources

About