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Wireless communication receiver

A wireless communication and receiver technology, applied in impedance networks, electrical components, transmission systems, etc., can solve problems such as increasing equipment costs

Active Publication Date: 2018-01-05
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, numerous off-chip bandpass filters increase equipment cost

Method used

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  • Wireless communication receiver
  • Wireless communication receiver
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Embodiment Construction

[0016] The invention discloses a wireless communication receiver structure. Note that the embodiments described herein include various elements and limitations, none of which can be considered critical. Each claim, taken in its entirety, recites an aspect of the invention. One or more systems, devices, components, etc. may comprise one or more embodiments, which may include some elements or limitations of claims performed by the same or different systems, devices, components, etc. The embodiments described below embody various aspects and configurations within the scope and spirit of the invention, and the drawings show exemplary and non-limiting configurations.

[0017] The disclosed technical terms are generally defined based on the technical field of the present application. If the present application describes or explains one or some terms, the definition of the terms is based on the description or explanation of the present application. Each disclosed embodiment has on...

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Abstract

Provided is a wireless communication receiver including an antenna for receiving an RF signal; a first mixer, coupled to the antenna, for performing frequency conversion on the RF signal from the antenna by mixing the RF signal with a local oscillator signal to provide a first intermediate frequency (IF) signal; and a first filter, coupled to the first mixer, configured to pass a predetermined band of frequencies of the first IF signal and to generate a first channel signal. The first filter includes a negative feedback loop coupled to the first mixer for performing negative feedback loop control on the first IF signal; and a positive capacitive feedback loop coupled to the first mixer for performing positive capacitive feedback loop control on the first IF signal, the negative feedback loop and the positive capacitive feedback loop being coupled in parallel.

Description

【Technical field】 [0001] The present invention relates to a wireless communication receiver. 【Background technique】 [0002] Many modern radio frequency (RF) receivers use direct conversion or zero-IF (ZIF) architectures. The RF signal received at the antenna is fed through a mixer driven by a local oscillator (LO) and then filtered to produce a baseband channel demodulated output signal. Ideally, an RF receiver's RF power amplifier will operate linearly, faithfully reproducing the amplified RF signal at its output without distortion. [0003] For the design goals of RF receivers, low noise figure (noise figure, NF), high third-order intercept point (third-order intercept point, IIP3) and high center frequency (fc) are required. [0004] A mixer-first receiver has advantages such as good linearity, high adjustable Q value and low noise figure. One such issue is the need to improve the IIP3 of the receiver. [0005] In addition, in order to suppress out-of-band signals, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H04B1/16
CPCH03H11/126H04B1/30H04B1/16H03H11/1204H04B1/1018
Inventor 连原庆艾瑞克·克朗佩林克布莱姆·诺塔
Owner MEDIATEK INC
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