Image-rejection mixer having high linearity and high gain

Details Image-rejection mixer having high linearity and high gain Image-rejection mixer having high linearity and high gain

2006-05-09

2006-05-09

Vuong, Quochien B. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S313000, C455S323000, C327S113000

Reexamination Certificate

active

07043220

ABSTRACT:
An integrated semiconductor image-rejection mixer having high linearity and high gain. In addition to the components of a classic image-rejection architecture, the present mixer has a high-frequency current-diverting stage that permits the operation of the output stage with high conversion gain and sufficient headroom for good linearity, even in cases where the supply voltage is relatively low (such as 3 V). The conversion gain of the mixer and its image-rejection performance can be changed by changing the load resistances and the elements of the output polyphase network, with minor effects on linearity and no change in power consumption or DC levels. The power consumption of the image-rejection mixer is low because no additional DC current is required for buffers or amplifier stages.

REFERENCES:
patent: 5570056 (1996-10-01), Groe
patent: 5589791 (1996-12-01), Gilbert
patent: 5884154 (1999-03-01), Sano et al.
patent: 6285865 (2001-09-01), Vorenkamp et al.
patent: 6404281 (2002-06-01), Kobayashi
patent: 6438365 (2002-08-01), Balteanu
Gingell, M.J., “Single Sideband Modulation using Sequence Asymmetric Polyphase Networks”, Electrical Communication, 1973, pp. 21-25, vol. 48, Nos. 1 and 2.
Sansen, Willy M.C. et al., “An Integrated Wide-Band Variable-Gain Amplifier with Maximum Dynamic Range”, IEEE Journal of Solid-State Circuits, Aug. 1974, pp. 159-166, vol. SC-9, No. 4.
Behbahani, Farbod et al., “CMOS Mixers and Polyphase Filters for Large Image Rejection”, IEEE Journal of Solid-State Circuits, Jun. 2001, pp. 873-887, vol. 36, No. 6.

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