一种抑制lo馈通和图像泄漏的60 ghz CMOS宽带外差I/Q上变频器

2023 IEEE 23rd Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems Pub Date : 2023-01-22 DOI:10.1109/SiRF56960.2023.10046217

Kyung Pil Jung, Seung Hun Kim, Chulwoo Park

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引用次数: 0

摘要

本研究开发了一种60 ghz CMOS外差I/Q上转换器，具有本地振荡器馈通(LOFT)抑制和65纳米工艺的I/Q校准。提出了一种紧凑的片上无源I/Q校准电路，在不需要额外功耗的情况下抑制图像泄漏。通过使用变容器和衰减器，可以在I/Q混频器中分别校准高达20°和1.5 dB的相位和增益差。所提出的I/Q上转换器在55-6S.5范围内提供4.2 dB的峰值转换增益GHz表示3db带宽。校正后，测得的LOFT抑制和IRR分别为54和44 dB，比未校正时分别提高了23.5和12 dB。

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A 60-GHz CMOS Broadband Heterodyne I/Q Up-Converter with Suppressed LOFeedthrough and Image Leakages

This study developed a 60-GHz CMOS heterodyne I/Q up-converter with local oscillator feedthrough (LOFT) suppression and I/Q calibration in 65-nm process. The compact onchip passive I/Q calibration circuits are proposed to suppress image leakage while requiring no additional power consumption. By using varactors and attenuators, the phase and gain difference of up to 20° and 1.5 dB can be calibrated in I/Q mixers, respectively. The proposed I/Q up-converter delivered a peak conversion gain of 4.2 dB across 55-6S.5 GHz for 3-dB bandwidth. With the proposed calibration, the measured LOFT suppression and IRR are 54 and 44 dB respectively, improved by 23.5 and 12 dB compared to without calibration, respectively.

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来源期刊

2023 IEEE 23rd Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems

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