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Filtering device of transmitting-receiving system

A filtering device and filtering processing technology, applied in impedance networks, electrical components, multi-terminal-to-network, etc., can solve the problems of filter occupation, large area, and increase the production cost of wireless transceiver systems, and achieve the effect of saving production costs.

Active Publication Date: 2014-01-01
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, arranging two separate filters in a wireless transceiver system will inevitably occupy a large area, thereby increasing the manufacturing cost of the traditional wireless transceiver system

Method used

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  • Filtering device of transmitting-receiving system
  • Filtering device of transmitting-receiving system
  • Filtering device of transmitting-receiving system

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Embodiment Construction

[0026] Certain terms are used in the specification and subsequent 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. This description and subsequent application 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. The "comprising" mentioned throughout the specification and subsequent claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" here includes any direct and indirect means of electrical connection. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device can be directly electrically connected to the The second device, or indirectly electrically connected to the second device through other devices or connection means.

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Abstract

A filtering device suitable for a transmitting-receiving system comprises a capacitive circuit and a resistive circuit, wherein the capacitive circuit is used for switching between first capacitive configuration and second capacitive configuration to be coupled with an amplifying circuit, and the resistive circuit is used for switching between first resistive configuration and second resistive configuration to be coupled with the amplifying circuit. When the capacitive circuit is in the first capacitive configuration, the filtering device carries out first filtering treatment on received signals, and when the capacitive circuit is in the second capacitive configuration, the filtering device carries out second filtering treatment on transmitted signals.

Description

technical field [0001] The present invention relates to a filtering device, in particular to a filtering device of a transceiver system having a low-pass filtering function and a band-pass filtering function. Background technique [0002] In a conventional wireless transceiver system, when the wireless transceiver system operates in a receive mode, a filter is usually used to filter a received wireless signal to transmit a filtered signal to the transceiver system A processing circuit for signal processing operations. On the contrary, when the wireless transceiver system operates in a transmission mode, another filter is used to filter a signal to be transmitted to generate a wireless transmission signal. Generally speaking, in order to avoid interference between the received signal and the transmitted signal, the above two filters are separate filters. However, arranging two separate filters in a wireless transceiver system will inevitably occupy a large area, thereby inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H7/06H03H7/12
Inventor 邱珮如
Owner REALTEK SEMICON CORP