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Signal processing device and method for setting filter characteristics of signal processing device

A signal processing device and signal technology, applied in electrical components, transmission systems, etc., can solve the problems of increasing hardware cost and circuit board area, and achieve the effect of simple structure

Active Publication Date: 2017-07-07
MEDIATEK INC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The most common solution to the problems caused by very strong interfering signals is to use very high quality factors ( q ualit y factor) is applied to the input of a wireless communication receiver. For example, a surface acoustic wave (SAW) filter can be used to provide the desired attenuation for OOB interfering signals. However, using a surface acoustic wave Filters often result in a substantial increase in hardware cost and board area

Method used

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  • Signal processing device and method for setting filter characteristics of signal processing device
  • Signal processing device and method for setting filter characteristics of signal processing device
  • Signal processing device and method for setting filter characteristics of signal processing device

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Embodiment Construction

[0019] Certain terms are used in the description and claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and 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 that the first device is coupled to the second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0020] see figure 1 , figure 1is a schematic diagram of the...

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Abstract

The invention provides a signal processing device and a method for setting filter characteristics of the signal processing device. The method for setting the filter characteristic of the signal processing device includes: setting the configuration of the first signal processing path; and setting the configuration of the second signal processing path. When the input signal received by the signal input port includes a first signal component of a first frequency and a second signal component of a second frequency, most of the first signal component is processed through the first signal processing path, and the A majority of the second signal component is processed through the second signal processing path. The signal processing device and the method for setting the filter characteristics of the signal processing device can effectively filter out unwanted signal components.

Description

technical field [0001] The present invention relates to filtering of a blocker signal, and in particular to a signal processing device comprising a frequency selective circuit having a mixer module to control the frequency response of the frequency selective circuit and related methods. Background technique [0002] Generally speaking, a wireless communication receiver needs to be able to detect weak signals in the desired frequency band. Furthermore, a wireless communication receiver needs to be able to detect strong out-of-band (OOB) signals (i.e. interference signal) to detect the in-band (in-band) signal. The most common solution to the problems caused by very strong interfering signals is to use very high quality factors ( q ualit y factor) is applied to the input of a wireless communication receiver. For example, a surface acoustic wave (SAW) filter can be used to provide the desired attenuation for OOB interfering signals. However, using a surface acoustic wave F...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04B1/26
CPCH04B1/109H04B1/30
Inventor 蔡明达
Owner MEDIATEK INC
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