Ultra-wideband image rejection mixer suitable for 5G communication system

A technology for image suppression and communication systems, applied in transmission systems, multi-frequency modulation conversion, electrical components, etc., can solve problems such as target signal interference and affect communication quality, and achieve excellent performance, good power consumption, good gain and flat gain degree of effect

Pending Publication Date: 2022-01-21
TIANJIN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

The transmission link in the direct conversion architecture is used to move the intermediate frequency signal to the high frequency, which is amplified and output by the power amplifier, antenna and other modules. In the process of spectrum shifting, in addition to the target signal, other spurious signals will be generated. , because the image signal is very close to the target signal, it will interfere with the target signal to a large extent, thereby affecting the communication quality, so it is necessary to effectively suppress the image signal

Method used

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  • Ultra-wideband image rejection mixer suitable for 5G communication system
  • Ultra-wideband image rejection mixer suitable for 5G communication system
  • Ultra-wideband image rejection mixer suitable for 5G communication system

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Embodiment Construction

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, it indicates There are features, steps, operations, parts or ...

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Abstract

The invention discloses an ultra-wideband image rejection mixer suitable for a 5G communication system. The topological structure of the mixer comprises an intermediate-frequency transconductance stage, a local oscillator switch stage, a radio frequency load stage and a local oscillator I / Q generation network. The ultra-wideband image rejection mixer has the following beneficial effects that 1, the ultra-wideband image rejection mixer topology provided by the invention can realize better gain and gain flatness in an ultra-wideband range by using a method of combining an active mixing core and a passive broadband matching network; 2, the whole ultra-wideband image rejection mixer topology provided by the invention uses an image rejection architecture, and can realize a relatively good image rejection effect in an ultra-wideband range; and 3, the ultra-wideband image rejection mixer topology provided by the invention has excellent performance in the aspects of bandwidth and image rejection, and can also achieve good balance among indexes such as linearity, mixing spurious frequency, power consumption and the like.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to an ultra-wideband image rejection mixer suitable for 5G communication systems. Background technique [0002] With the widespread use of wireless communication technologies, the demand for wireless communication devices such as Bluetooth, Wi-Fi, and GPS is increasing day by day. For communication equipment, its miniaturization and high efficiency directly affect user use and information transmission efficiency. The signal is transmitted at a higher frequency, which can effectively reduce the size of the antenna design, which is of great significance for the miniaturization of equipment. In addition, it can further expand the channel bandwidth and increase the communication rate. Therefore, a mixer is needed to shift the spectrum of the signal, especially in the transmitter, it is necessary to use an up-conversion mixer to move the low-frequency signal to a high-freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03D7/16H04B1/00
CPCH03D7/16H04B1/0075H04B1/0085
Inventor 马凯学胡轲杰马宗琳傅海鹏
Owner TIANJIN UNIV
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