A 2 GHz CMOS even harmonic mixer for direct conversion receivers

Fang, Sher Jiun; Lee, See Taur; Allstot, D.J.; Bellaouar, A.

doi:10.1109/iscas.2002.1010580

Cited by 18 publications

(3 citation statements)

References 6 publications

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“…A comparison of the performance is carried out between the four circuits. They are the proposed even harmonic switching mixer, the even harmonic mixers in [8] and [9], and the switching mixer in [41]. The proposed circuit was constructed and simulated using Cadence SpectreRF.…”

Section: Simulation Results and Comparisonmentioning

confidence: 99%

“…Another disadvantage of [8] is the higher cost of the BiCMOS technology. The even harmonic mixer in [9] is implemented in a 0.25nm standard CMOS process. So the noise figure is high due to the high flicker noise.…”

Section: Simulation Results and Comparisonmentioning

confidence: 99%

“…The input RF signal behaves as if it is mixed with an LO signals with a non-50% duty cycle. Hence, this topology generates the LO even harmonics[9].(Fig. 3.7(c))…”

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confidence: 99%

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Analysis and design of CMOS mixers for direct conversion receivers

Liu¹

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Firstly, I would like to take this opportunity to thank my project supervisor, Professor Do Manh Anh, for his caring supervision and constructive criticism. What I have learnt from him is far beyond the scope of academic research. His optimistic character, unyielding will and foresight form the key to success. It is an invaluable experience to have been with Professor Do in the past 2 years. I am also very grateful to those kind and talented professors in the division of circuits and systems, especially Professor Ma Jian-Guo and Professor Yeo Kiat-Seng, for their helpful guidance and discussions during the project. I also like to give special thanks to the technical staff in IC Design Lab I, II, III, and Centre for Integrated Circuits and Systems (CICS), for their help during the implementation of the project. Many thanks go to other staff and students, Yan Guoqiang,

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Section: Simulation Results and Comparisonmentioning

confidence: 99%

Section: Simulation Results and Comparisonmentioning

confidence: 99%

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Analysis and design of CMOS mixers for direct conversion receivers

Liu¹

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High LO-RF isolation of zero-IF mixer in 0.18 μm CMOS technology

Hsu

Lee

2006

Analog Integr Circ Sig Process

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In this study, we introduce a zero-IF sub-harmonic mixer with high isolation in the 5 GHz band using 0.18 µm CMOS technology. Placing an LC-Tank between the class AB stage and the mixer core improves the isolation between the LO to RF at low supply voltage. The measured isolation is 48 dB between the LO and RF ports, and the 9.5 dB conversion gain is achieved with a supply voltage of 7 mA at 2.5 V. In order to alleviate the degradation of linearity due to the high conversion gain, we adopt the class AB stage as RF input stage. The measured IIP 3 is −7.5 dBm.

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Analysis of LO leakage due to LO mismatch in CMOS gilbert mixer for direct conversion application

Liu¹,

Do²,

Ma³

et al.

The 2004 IEEE Asia-Pacific Conference on Circuits and Systems, 2004. Proceedings.

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The DC offset caused by the LO-RF feedthrough in the mixer of a direct conversion receiver is a serious problem. The LO leakage caused by the LO mismatch in double-balanced CMOS Gilbert mixers is examined and analyzed in four cases, no LO mismatch, LO phase mismatch only, LO amplitude mismatch only and the combination of the two mismatches. The relation between the mismatch and the LO leakage is derived.Simulation results shown are consistent with the analysis.

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A 2 GHz CMOS even harmonic mixer for direct conversion receivers

Cited by 18 publications

References 6 publications

Analysis and design of CMOS mixers for direct conversion receivers

Analysis and design of CMOS mixers for direct conversion receivers

High LO-RF isolation of zero-IF mixer in 0.18 μm CMOS technology

Analysis of LO leakage due to LO mismatch in CMOS gilbert mixer for direct conversion application

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