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receiver

A receiver and coupling technology, applied in the field of receivers, can solve problems such as poor receiver performance, and achieve good signal quality and performance, and excellent signal quality

Active Publication Date: 2022-04-01
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bandgroup loading needs to be co-designed, and the input of the mixer will see the parasitic loading of both bandgroups, resulting in worse receiver performance

Method used

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Embodiment Construction

[0014] Certain terms are used in the description and claims to refer to particular components. Those skilled in the art should understand that manufacturers of electronic equipment may use different terms to refer to the same component. The specification and claims do not use the difference in name as the way to distinguish components, but use the difference in function of the components as the basis for the difference. "Includes" mentioned throughout the specification and the following claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described herein that a first device is electrically connected to a second device, it means that the first device may be directly connected to the second device, or indirectly connected to the second device through other devices or connection means.

[0015] figure 1 is a schematic di...

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Abstract

The present invention provides a receiver including a first frequency band group, a second frequency band group and a mixer. The first frequency band group includes at least one first LNA, and the first frequency band group is configured to select a first LNA to receive the first input signal to generate an amplified first input signal. The second frequency band group includes at least one second LNA, and the second frequency band group is configured to select a second LNA to receive the second input signal to generate an amplified second input signal. The first and second frequency band groups are respectively coupled to first and second input terminals of a mixer, and the mixer receives one of the amplified first input signal and the amplified second input signal to generate an output Signal. Through the present invention, the signal quality and performance of the frequency band group will become better, and the signal quality is better than the conventional technology.

Description

technical field [0001] The present invention relates to receivers, and more particularly to receivers having mixers shared by two frequency band groups. Background technique [0002] In conventional receivers, each band group requires a dedicated mixer and operates independently. In order to reduce the chip area, some mixer sharing techniques are provided. In a first example, two band groups are respectively coupled to the input of the mixer via a switch, and only one band group is allowed to be connected to the input of the mixer at a time. However, the switches in the first example provide additional parasitic loading, and the input to the mixer will see the parasitic loading of both switches. In a second example, two band sets are directly connected to the input of the mixer, and only one band set is enabled at a time to send a signal to the input of the mixer. However, the loading of the band groups needs to be co-designed, and the input of the mixer will see the para...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16H04B1/00
CPCH04B1/16H04B1/1638H04B1/0067H04B1/0082H04B1/005H03D7/1441H03D7/1458H03F3/193H03F3/72H03F2200/294H03F2200/372H03F2200/451
Inventor 孙志豪罗育聪李亦斌
Owner MEDIATEK INC