Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1997-08-21
2000-09-19
Hunter, Daniel S.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455293, 455319, H04B 128
Patent
active
061224979
ABSTRACT:
An RF mixer provides extended dynamic range with reduced noise by utilizing degeneration inductors in the RF input section of a doubly balanced mixer. Degeneration inductors are also utilized in a mixer having a class AB input section. A current mirror in the class AB input section is also inductively degenerated for further noise reduction. The input section is biased by an all-NPN bandgap reference cell which is tightly integrated into the input section so as to reduce the power supply voltage required for the reference cell. The mixer can be optimized for wide input voltage ranges or low distortion.
REFERENCES:
patent: 4230956 (1980-10-01), Steinbrecher
patent: 4626770 (1986-12-01), Price, Jr.
patent: 4723110 (1988-02-01), Voorman
patent: 4727596 (1988-02-01), Jaffer
patent: 5043674 (1991-08-01), Bonaccio et al.
patent: 5107134 (1992-04-01), Itoh
patent: 5343163 (1994-08-01), Linderet al.
patent: 5379457 (1995-01-01), Nguyen
patent: 5497123 (1996-03-01), Main et al.
patent: 5559457 (1996-09-01), Uda et al.
patent: 5805987 (1998-09-01), Kamase
Kimura, A Bipolar Four-Quadrant Analog Quarter-Square Multiplier Consisting of Unbalanced Emitter-Coupled Pairs and Expansion of Its Input Ranges, IEEE Journal of Solid-State Circuits, vol. 29, No. 1, Jan. 1994.
Kimura, "Some Circuit Design Techniques Using Two Cross-Coupled, Emitter-Coupled Pairs", IEEE Transactions On Circuits and Systems 1: Fundamental Theory and Applications, vol. 41, No. 5, May 1994 pp. 411-423.
Brokaw, A. Paul, "A Simple Three-Terminal IC Bandgap Reference," IEEE Journal of Solid-State Circuits, vol. SC-9, No. 6, Dec. 1974 pp. 388-393.
Analog Devices Inc.
Hunter Daniel S.
Nguyen Thuan T.
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