Active current mode sampling circuit

Details Active current mode sampling circuit Active current mode sampling circuit

2007-07-03

2007-07-03

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S096000

Reexamination Certificate

active

10536727

ABSTRACT:
The invention relates to an active current mode sampling circuit comprising an operational amplifier (103) and at least one switched capacitor (C2, C2a, C2b). In order to reduce the power consumption of such a circuit, first switching elements (S101a, S101b, S102a, S102b) switch the switched capacitor (C2, C2a, C2b) between an input and an output of the operational amplifier (103) during charging phases φ1. Further, second switching elements (S103a, S103b, S104a, S104b) connect the switched capacitor (C2, C2a, C2b) during discharging phases φ2to a subsequent stage (104), in order to provide a charge of the switched capacitor (C2, C2a, C2b) to the subsequent stage (104). The invention relates equally to a device (107) comprising such a sampling circuit and to a method of operating such a sampling circuit.

REFERENCES:
patent: 5689201 (1997-11-01), Temes et al.
patent: 5963156 (1999-10-01), Lewicki et al.
patent: 6661283 (2003-12-01), Lee
patent: WO 01/24192 (2001-04-01), None
“A Complex Charge Sampling Scheme for Complex if Receivers” by S. Karvonen et al, Proceedings of the 2003 IEEE International Symposium on Circuits and Systems (Cat. No. 03CH37430), ISCAS 2003, International Symposium on Circuits and Systems, Bangkok, Thailand, May 25-28, 2003 pp. II-169-II-172.
“A Track & Hold-AGC Suitable for Downconversion by Subsampling” by T. Vasseaux, et al, ICECS'99, Proceedings of ICECS '99; 6thIEEE International Conference on Electronics, Circuits and Systems (Cat. No. 99EX357), ICECS'99; Proceedings of ICECS'99, 6thIEEE International Conference on Electronics, Circuits and Systems, Pafos, Cyprus, pp. 1527-1530,, 1999.
“A Charge Sampling Mixer Embedded Filter Function for Wireless Applications” by J. Yuan, 2ndInternational Conference on Microwave and Millimeter Wave Technology Proceedings, 2000.
High-Speed Low-Power Integrating CMOS Sample-and-Hold Amplifier Architecture, L. Carley et al, Custom Integrated Circuits Conference, 1995.
“Charge Sampling Mixer with ΔΕ Quantized Impulse Response” by S. Karvonen et al, IEEE International Symposium on Circuits and Systems 2002, vol. 1.
“Analysis and Realization of a Downconverting Quadrature Sampler”, by S. Karvonen, Diploma Thesis, University of Oulu, 2001.
“CMOS Baseband Integrated Circuit Techniques for Radio Receivers” by S. Lindfors, Doctoral thesis, Helsinki University of Technology, Jul. 2000.
“A Low Noise Quadrature Subsampling Mixer” by S. Karvonen, et al, IEEE International Symposium on Circuits and Systems 2001, vol. 4.

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