A 0.41W 34Gb/s 300GHz CMOS Wireless Transceiver

Abdo, Ibrahim; Fujimura, Takuya; Miura, Tsuyoshi; Tokgoz, Korkut Kaan; Shirane, Atsushi; Okada, Kei

doi:10.1145/3394885.3431645

Cited by 3 publications

(2 citation statements)

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“…In this case, the LO frequency drops to half or lower depending on the harmonic used. As a result, frequencies around 100 GHz can be used while keeping the IF frequency at lower values [29], [33], [34]. Such a frequency plan is much more suitable for CMOS LO buffering.…”

Section: A Bi-directional Subharmonic Mixermentioning

confidence: 99%

A Bi-Directional 300-GHz-Band Phased-Array Transceiver in 65-nm CMOS With Outphasing Transmitting Mode and LO Emission Cancellation

Abdo

Gomez

Wang

et al. 2022

IEEE J. Solid-State Circuits

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This article introduces a four-element 300-GHzband bi-directional phased-array transceiver (TRX). The TRX utilizes the same antenna, signal path, and local oscillator (LO) circuitry to operate either in transmitter (TX) mode or receiver (RX) mode. The TX mode adopts the outphasing technique to increase the average output power for higher order modulation schemes by utilizing the two mixers that are connected directly to the antenna in a mixer-last fashion. The two signal paths also enable the canceling of the LO feed-through (LOFT). The RX mode also benefits from the LOFT cancellation technique to suppress the LO emission, which is a common issue of the mixer-first RXs. The RX has a separate Hartley operation mode to reject the image signal coming from the TX. The TRX chip was implemented using CMOS 65-nm process, and a four-element phased array was implemented by stacking liquid crystal polymer (LCP) flexible printed circuit boards (PCBs). The stacked structure provides the required narrow antenna pitch at the 300-GHz band. The measured beam angle range is from Manuscript

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Section: A Bi-directional Subharmonic Mixermentioning

confidence: 99%

A Bi-Directional 300-GHz-Band Phased-Array Transceiver in 65-nm CMOS With Outphasing Transmitting Mode and LO Emission Cancellation

Abdo

Gomez

Wang

et al. 2022

IEEE J. Solid-State Circuits

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“…CMOS amplifiers operating around 300GHz were introduced in the literature despite the low f max as in [19,20], but a reliable wideband operation is yet to be demonstrated. Many works sacrificed the presence of an amplifier to realize the 300GHz wireless link using CMOS [21,22,23,24,25,26,27,28,29,30]. The resulting mixer-last transmitter, mixer-first receiver system has very severe mixer linearity requirements, causing the overall system complexity to increase in order to get a reliable high data rate link.…”

Section: Introductionmentioning

confidence: 99%

64QAM wireless link with 300GHz InP-CMOS hybrid transceiver

Abdo

Hamada

Nosaka

et al. 2021

IEICE Electron. Express

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This letter presents a 300GHz hybrid transceiver using CMOS and InP-HEMT, which achieves a maximum data rate of 56Gb/s. A 300GHz CMOS transceiver with a mixer-last transmitter mixer-first receiver is utilized to up-and down-convert the V-band IF signal to the 300GHzband, while InP-HEMT is used for PA and LNA design. The transceiver also achieves wireless communication in ch.13-24 (1.76Gbaud), ch.39-44 (3.52Gbaud), ch.52-54 (7.04Gbaud) and ch.59 (10.56Gbaud) with lower than -16.7dB EVM. 64QAM modulation is also achieved for a 5Gbaud symbol rate. The CMOS transmitter and receiver consume 0.29W and 0.17W from a 1V supply, respectively, and the InP-HEMT PA and LNA consume 1.44W from a 1.2V supply.

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