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Receiver front-end circuit with external linearity enhanced current mode structure

A receiver front-end and current mode technology, applied in electrical components, transmission systems, etc., can solve problems such as the deterioration of out-of-band linearity, achieve high out-of-band suppression, improve out-of-band linearity, and increase bandwidth

Active Publication Date: 2019-12-10
CHENGDU UNIV OF INFORMATION TECH +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, a receiver front-end circuit of a current mode structure with enhanced out-of-band linearity provided by the present invention solves the problem of poor out-of-band linearity of the existing current-mode radio frequency front-end circuit

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  • Receiver front-end circuit with external linearity enhanced current mode structure
  • Receiver front-end circuit with external linearity enhanced current mode structure
  • Receiver front-end circuit with external linearity enhanced current mode structure

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Embodiment Construction

[0080] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0081] Such as figure 1 As shown, a receiver front-end circuit of a current mode structure with enhanced out-of-band linearity, including: input low-noise transconductance amplifier, band-pass filter, first passive mixer, first transimpedance amplifier, first an output buffer stage circuit, a second passive mixer, a second transimpedance amplifier and a second output buffer stage circuit;

[0082] The input of the input LN...

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Abstract

The invention discloses a receiver front-end circuit with an external linearity enhanced current mode structure. The receiver front-end circuit comprises an input low-noise transconductance amplifier,a band-pass filter, a first passive mixer, a first transimpedance amplifier, a first output buffer stage circuit, a second passive mixer, a second transimpedance amplifier and a second output bufferstage circuit. The current mode radio frequency front-end circuit solves the problem that the out-of-band linearity of an existing current mode radio frequency front-end circuit becomes poor.

Description

technical field [0001] The invention belongs to the technical field of radio frequency multi-mode wireless receiver integrated circuits, and in particular relates to a receiver front-end circuit of a current mode structure with enhanced out-of-band linearity. Background technique [0002] With the continuous emergence of wireless communication modes of different standards, integrating as many communication modes as possible on one terminal is an important trend in the development of current wireless communication technologies. In the face of complex application scenarios, the linearity and anti-interference ability of the RF front-end become the key indicators of multi-mode and multi-standard receivers. [0003] In order to meet the stringent requirements for linearity of multi-mode and multi-standard receivers, one of the methods is to use a current-mode RF front-end circuit. In the existing current-mode RF front-end circuit, the input voltage is converted to the input volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H04B1/12H04B1/16
CPCH04B1/10H04B1/12H04B1/16
Inventor 陶健姜丹丹丁川马文英叶松
Owner CHENGDU UNIV OF INFORMATION TECH
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