An Q-factor calibration method for compensation of the I/Q signal imbalances in 5-6 GHz beamforming receiver

被引：1

作者：

Jung, Won-Jae ^{[1
]}

Hong, Nam-Pyo ^{[1
]}

Jang, Jong-Eun ^{[2
]}

Kim, Jin-Sup ^{[3
]}

Park, Jun-Seok ^{[1
]}

机构：

[1] Kookmin Univ, Ubiquitous Convergence Technol Lab, 606 Bldg 7,77 Jeongneung Ro, Seoul 136702, South Korea

[2] EPIC Solut Co Ltd, Seoul, South Korea

[3] Korea Elect Technol Inst, Seongnam Si, Gyeonggi Do, South Korea

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2018年 / 60卷 / 09期

关键词：

beamforming; IQ network; phase shifter; phased array; vector modulator; PHASE-SHIFTER; KU-BAND; C-BAND; X-BAND; CMOS;

D O I：

10.1002/mop.31329

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This article presents 5-6 GHz beamforming receiver with Q-factor calibrated vector modulator to reduce phase error and amplitude mismatch. Q-factor of vector modulator IQ network has to be 0.95-1.05 in 5-6 GHz to get under +/- 3 degrees phase error. Proposed Q-factor calibration circuit selects the best capacitance and resistance for proper Q-factor in desired frequency range. Beamforming receiver prototype, which is implemented in 0.13-m CMOS, has 0.98-1.03 Q-factor in 5-6 GHz. The prototype has improved performance than without calibration: its rms phase error is maximum 1.5 degrees (4.5 degrees improved), and amplitude mismatch is maximum 0.47 dB (0.73-dB improved). In addition, noise figure is 3.8-4.6 dB at 5-6 GHz.

引用

页码：2272 / 2276

页数：5

共 34 条

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