An adaptive offset cancellation mixer for direct conversion receivers in 2.4 GHz CMOS

Lehne, Mark; Stonick, J.T.; Moon, Un-Ku

doi:10.1109/iscas.2000.857094

Cited by 10 publications

(4 citation statements)

References 6 publications

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“…Looking through the topology, an advantage of the doublebalanced structure in comparison with the single-balanced one is the good isolation between the LO and the IF port. Besides, there are other advantages such as the noise-rejection in common mode, better linearity, and less intermodulation (Lehne et al, 2000). In this way, for RFIC mixer, the Gilbert cell is the most common topology.…”

Section: Mixermentioning

confidence: 99%

Mobile and Wireless Communications

Tc¹,

Omidyar²

2003

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Her research interests include cooperative relay network, OFDMA resource allocation, adaptive antenna arrays, sensor networks, and signal processing for telecommunication applications.Fumiyuki Adachi received the B.S. and Dr. Eng. degrees in electrical engineering from Tohoku University, Sendai, Japan, in 1973, respectively. In April 1973, he joined the Electrical Communications Laboratories of Nippon Telegraph & Telephone Corporation (now NTT) and conducted various researches on digital cellular mobile communications. From July 1992 to December 1999, he was with NTT Mobile Communications Network, Inc. (now NTT DoCoMo, Inc.), where he led a research group on Wideband CDMA for 3G systems. Since January 2000, he has been with Tohoku University, Sendai, Japan, where he is a Professor at the Dept. of Communications Engineering, Graduate School of Engineering. His research interest is in the area of wireless signal processing (multiaccess, equalization, antenna diversity, adaptive transmission, channel coding, etc.

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Section: Mixermentioning

confidence: 99%

Mobile and Wireless Communications

Tc¹,

Omidyar²

2003

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“…The third approach involves the modification to the Gilbert cell [30] or replaces it with other mixing circuits instead, such as harmonic mixers [8]- [10], because the DC offset is an inherent problem of Gilbert cell. In the following sections, some DC-offset cancellation techniques are illustrated.…”

Section: Chapter 3 DC Offset Cancellation Techniques In Dcrmentioning

confidence: 99%

“…The basic circuit structure considered is the Gilbert cell mixer. Offsets are cancelled by dynamically varying the bias on the loads [30]. This method can detect the dynamic offsets, while maintaining a good steady state performance, by employing an adaptive digital "gear shifting" approach.…”

Section: Offset Current Cancellation Techniquementioning

confidence: 99%

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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“…Dentre as diversas topologias de mixers, a topologia duplamente balanceada é a que possui maior isolação entre as portas, rejeição ao ruído em modo comum, maior linearidade e menor intermodulação (Lehne et al, 2000). Nessa linha, a célula de Gilbert é a que vem predominando nas arquiteturas dos circuitos integrados.…”

Section: Introductionunclassified

Circuitos integrados de radio-recepção para a operação de multiplexação espacial de antenas em tempo real

Capovilla¹,

Kretly²

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Esta pesquisa tem por objetivo a concepção de novas topologias de circuitos integrados e suas caracterizações para operação em sistemas de rádio-recepção. O projeto e a fabricação de chaves de RF, LNAs, mixer e VCOs são apresentados. A técnica SMILE (Spatial MultIplexing of Local Elements) foi adotada devido às suas vantagens e funcionalidade para a otimização física de antenas inteligentes. Essa técnica requer um chaveamento sequencial das antenas do arranjo e para tal foi desenvolvido um controle de chaveamento acionado por um VCO digital. A demultiplexação analógica do sinal é implementada através de um OTA e chaves analógicas diferenciais. Assim, além da introdução de novas topologias de circuitos integrados, este trabalho estabelece procedimentos de projeto e simulação associados à validação dos dispositivos fabricados.

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An adaptive offset cancellation mixer for direct conversion receivers in 2.4 GHz CMOS

Cited by 10 publications

References 6 publications

Mobile and Wireless Communications

Mobile and Wireless Communications

Analysis and design of CMOS mixers for direct conversion receivers

Circuitos integrados de radio-recepção para a operação de multiplexação espacial de antenas em tempo real

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