A 24.2-30.5GHz Quad-Channel RFIC for 5G Communications including Built-In Test Equipment

Maistro, Daniele Dal; Rubino, C.; Caruso, Michele; Tiebout, M.; Maksymova, Ievgeniia; Ilić, Marko; Thurner, Peter; Zaghi, M.; Mertens, K.; Vehovc, S.; Tsvelykh, I.; Schatzmayr, E.; Druml, M.; Druml, R.; Mueller, Marcel; Anderwald, M.; Wuertele, J.; Rueddenklau, Uwe

doi:10.1109/rfic.2019.8701830

Cited by 26 publications

(6 citation statements)

References 7 publications

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“…As shown in Fig. 12(a), each channel response of the beamforming transceiver can be measured through an on-chip dedicated tester connected to all input/output ports of each channel [117]- [119]. In [121], channel responses were extracted by using one transmitter as a tester instead of a dedicated tester for all receiver channels, as shown in Fig.…”

Section: Imperfection Of Antenna Channelsmentioning

confidence: 99%

Terahertz Communications: Challenges in the Next Decade

Song

Lee

2022

IEEE Trans. THz Sci. Technol.

174

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Thanks to the abrupt advances in semiconductor technologies, particularly in terms of the operating frequency, the last decade has seen various efforts and trials in attempts to achieve high-throughput wireless communications at terahertz (THz) frequencies. Through the use of several potential device technologies, not only III-V heterojunction bipolar and high-electron-mobility transistors but also silicon complementary metal-oxide-semiconductors and photonic technologies, high data rates of 100 Gbps or more have been successfully demonstrated. Meanwhile, the next generation of wireless communications systems, so called 6G, is already being discussed in research communities worldwide. A terabit per second peak data rate is envisioned, which essentially requires huge spectral resources. The recent considerable attention to 6G communications is implicitly focused on THz communications but is more than a technical curiosity unlike in the past. In this article, we briefly review the progress of THz communications made in the last decade and discuss some of the most challenging issues that need to be overcome for future wireless systems at THz frequencies, including not only the 6G network but also short-range connectivity and fixed wireless links.

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Section: Imperfection Of Antenna Channelsmentioning

confidence: 99%

Terahertz Communications: Challenges in the Next Decade

Song

Lee

2022

IEEE Trans. THz Sci. Technol.

174

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“…Note that R opt is defined as the optimum load impedance of the carrier and peaking PAs. Formula (18) shows Zc as a function of frequency, and the modulated impedance deviates from the ideal value as it is frequency dependent. 36,52…”

Section: Doherty Power Amplifier Bandwidth Enhancement Techniques For 5gmentioning

confidence: 99%

“…4 To reduce the cost, built-in self-test is a wise choice for designing PAs for frequencies above 20 GHz because direct RF testing at these frequencies is expensive. 18,19 This paper provides a comprehensive analysis of various connected load DPAs. Parallel, series, and hybrid series/ parallel DPA structures are reviewed.…”

Section: Introductionmentioning

confidence: 99%

A review of Doherty power amplifier and load modulated balanced amplifier for 5G technology

Makhsuci

Navidi

Sanduleanu

et al. 2023

Circuit Theory & Apps

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In this paper, functionality of the Doherty power amplifiers (DPAs) along with their design constraints such as DPA combining techniques are reviewed. This is because power amplifier (PA) is a key building block in the design of fifth generation (5G) communication systems. A significant trend is the DPA bandwidth enhancement technique, which is the subject of numerous papers in the literature. So, we will review some papers with different solutions to address DPA's bandwidth limitations. There are also different works in the literature that have focused on high-efficiency PA structure designs, which are also discussed in this paper. An excellent option for effective power combining in broadband designs is using balanced amplifiers. We have discussed load modulated balanced amplifiers (LMBA) in this paper because designing an effective PA with a wide bandwidth is crucial. We also covered some papers that have proposed techniques based on the linearization method to bring the efficiency and linearity of DPAs to a fair level. K E Y W O R D SDoherty power amplifier, energy efficiency, fifth generation (5G), linearization, peak to average power ratio (PAPR), quasi-balanced Doherty power amplifier (QB-DPA)

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“…Over 22% maximum TX-mode efficiency and 4.9-dB RX-mode noise figure (NF) are obtained by each element-beamformer. The occupied area for each beamformer is only 0.48 mm 2 . Due to the proposed cancellation technique, the 64H + 64V array modules in this work can support 5G new radio (NR) standard-compliant DP-MIMO communication even under severe cross-pol.…”

Section: Introductionmentioning

confidence: 99%

A CMOS Dual-Polarized Phased-Array Beamformer Utilizing Cross-Polarization Leakage Cancellation for 5G MIMO Systems

Pang

Luo

et al. 2021

IEEE J. Solid-State Circuits

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This article introduces a power-efficient and lowcost CMOS 28-GHz phased-array beamformer supporting fifthgeneration (5G) dual-polarized multiple-in-multiple-out (MIMO) (DP-MIMO) operation. To improve the cross-polarization (crosspol.) isolation degraded by the antennas and propagation, a power-efficient analog-assisted cross-pol. leakage cancellation technique is implemented. After the high-accuracy cancellation, more than 41.3-dB cross-pol. isolation is maintained along with the transmitter array to the receiver array. The element-beamformer in this work adopts the compact neutralized bi-directional architecture featuring a minimized manufacturing cost. The proposed beamformer achieves 22% per path TX-mode efficiency and a 4.9-dB RX-mode noise figure. The required onchip area for the beamformer is only 0.48 mm 2 . In over-the-air measurement, a 64-element dual-polarized phased-array module achieves 52.2-dBm saturated effective isotropic radiated power (EIRP). The 5G standard-compliant OFDMA-mode modulated signals of up to 256-QAM could be supported by the 64-element modules. With the help of the cross-pol. leakage cancellation technique, the proposed array module realizes improved DP-MIMO EVMs even under severe polarization coupling and rotation conditions. The measured DP-MIMO EVMs are 3.4% in both 64-QAM and 256-QAM. The consumed power per

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A 24.2-30.5GHz Quad-Channel RFIC for 5G Communications including Built-In Test Equipment

Cited by 26 publications

References 7 publications

Terahertz Communications: Challenges in the Next Decade

Terahertz Communications: Challenges in the Next Decade

A review of Doherty power amplifier and load modulated balanced amplifier for 5G technology

A CMOS Dual-Polarized Phased-Array Beamformer Utilizing Cross-Polarization Leakage Cancellation for 5G MIMO Systems

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