Frequency mixer and relevant frequency mixing method

A technology of mixer and frequency mixing, which is applied in the direction of the balance device of modulation transformation, etc., can solve the problems of poor high frequency response, mixer bandwidth drop, signal distortion, etc., and achieve the effect of good high frequency response

Inactive Publication Date: 2013-11-06
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the equivalent capacitance at the input terminal increases accordingly, which increases the time constant, which in turn leads to a decrease in the bandwidth of the mixer and poor high-frequency response, resulting in signal distortion problems
Since the input signal of the mixer may be a high-frequency radio frequency signal, the problem of signal distortion will be more serious

Method used

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  • Frequency mixer and relevant frequency mixing method
  • Frequency mixer and relevant frequency mixing method
  • Frequency mixer and relevant frequency mixing method

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Embodiment Construction

[0026] In the following, the content of the present invention will be explained by the combination of a plurality of embodiments and the drawings. These embodiments include variations and modifications based on the present invention without departing from the broad concept and scope of the present invention. In addition, the following description of these embodiments will be accompanied by specific drawings, but the disclosure of these drawings should not be construed as limitations of the present invention. Elements or symbols with the same reference numbers in different drawings should be considered to have similar meanings, functions or modes of operation.

[0027] Please refer to figure 1 , which is a simple structure diagram of an embodiment of the mixer of the present invention. As shown in the figure, the mixer 100 of the present invention includes a transformer 110 and a mixing circuit 120 . The transformer 110 includes a first coil 112 and a second coil 114 for con...

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Abstract

Provided are a frequency mixer and a relevant frequency mixing method. The frequency mixer comprises a transformer and a frequency mixing circuit. The transformer is used for receiving an input signal to generate differential action output. The frequency mixing circuit is connected to the transformer in a coupled mode and is used for conducting frequency mixing on the differential action output and N oscillator signals with different phases to generate a plurality of frequency mixing output signals, wherein the N is larger than two.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a mixer in the field of wireless communication and a frequency mixing method thereof, which can be used for mixing an input signal and a multiphase oscillating signal. Background technique [0002] In the field of wireless communication, a mixer is an important and indispensable element. No matter in the receiver or the transmitter, the mixer needs to be used to transfer the signal frequency. For example, the mixer in the receiver needs to down-convert the RF signal received from the antenna and amplified by the amplifier with the local oscillating signal to obtain an intermediate frequency signal or a fundamental frequency signal for subsequent demodulation processing ( demodulation). [0003] A common mixer architecture is the Gilbert cell architecture, which mixes the input signal with the oscillating signal through a stacked differential pair, thereby raising or lowerin...

Claims

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Application Information

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IPC IPC(8): H03D7/14
Inventor 陈宪谷张家润陈家源林盈熙
Owner REALTEK SEMICON CORP
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