Mixer with bias sharing

By sharing bias circuits between mixers, the circuit system complexity and cost increase caused by repeated configuration of mixers in the prior art is solved, and the effects of reducing die size, reducing costs and improving signal quality are achieved.

CN119731949APending Publication Date: 2025-03-28QUALCOMM INC
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Patent Information

Application Number
CN202380060113.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-09-13
Filing Date
2023-08-18
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In existing wireless communication systems, the repeated configuration of the mixer leads to increased complexity and cost of the circuit system, and it is difficult to maintain high signal integrity and high bandwidth when facing operations in multiple frequencies and multiple frequency ranges.

Method used

By sharing circuit systems between mixers, especially mixer bias circuits, the number of supported circuit systems is reduced. The auxiliary mixer can share the bias circuit of the main mixer, equalizing the load of the LO signal, thereby reducing the impact on other parts of the RF system.

Benefits of technology

It realizes reducing the die size of mixers and RF transceivers, reducing cost and power consumption, while improving harmonic rejection capabilities, and enhancing data rates and user experience in high noise environments.

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Abstract

This disclosure provides systems, methods, and devices for supporting down-converted wireless communications in a radio frequency (RF) system. In a first aspect, an apparatus for wireless communication includes: a first mixer coupled to an input node; a second mixer coupled to the input node; and a first mixer bias circuit configured to output a first local oscillator (LO) signal, the first mixer bias circuit coupled to the first mixer and the second mixer to output the first LO signal to the first mixer and the second mixer. Other aspects and features are also claimed and described.
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