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Harmonic mixer

A mixer and harmonic technology, applied in power oscillators, multi-carrier systems, phase-modulated carrier systems, etc., can solve problems such as disadvantages and achieve the effect of improving hardware

Inactive Publication Date: 2005-01-26
GLOBALFOUNDRIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These spurious signals are particularly bad for the direct conversion principle, since the desired down-converted RF signal is also centered at f=0

Method used

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Embodiment Construction

[0039] Exemplary embodiments of the present invention will be described hereinafter. In the interest of clarity, not all features of a practical implementation of the invention are described in this specification. It should of course be appreciated that in developing any such actual embodiment, many relevant decisions must be made in order to achieve the inventor's specific goals, such as compliance with system-related and business-related requirements that vary from embodiment to embodiment. related constraints. Furthermore, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking for a person of ordinary skill in the art having reference to the present disclosure.

[0040] The invention will now be described with reference to the accompanying drawings. Although various regions and structures of semiconductors have been accurately and clearly depicted in their configurations, those of ordina...

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Abstract

The invention provides a harmonic direct conversion mixer having a multiplier circuit comprising first and second mixers and a generator for generating two first and two second control signals for controlling the first and second mixers. The control signals are balanced signals and are provided in four phases shifted by pi / 2 in phase. The frequency of the control signals is different from the frequency of the mixer input signal.

Description

technical field [0001] The present invention relates generally to transceivers and, more particularly, to a harmonic mixer (mixer) for use in an integrated radio frequency (RF) transceiver. Background technique [0002] Research into new integrated circuit (IC) technologies, circuit configurations, and transceiver architectures has been prompted by the increasing demand for portable radio communication devices with low price, light weight, small size, and improved capabilities. Transceiver devices for wideband systems including direct conversion hybrids are known, meeting the above requirements, which are superior to those built according to the widely used super-extrapolation principle. [0003] At the transmitter level of a transceiver, a direct-conversion mixer is used to up-convert the baseband analog or digital signal to a radio frequency (RF) signal for easy transmission. At the receiver level, a direct conversion mixer is used to down convert the received RF signal t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B21/01H03D7/14H04L27/20H04L27/36
CPCH03D7/1441H03D7/1466H03D7/1458H03D7/1491H03D7/1475H03D7/165H03D7/1433H03B21/01H03D7/14
Inventor W·克鲁吉D·艾格特
Owner GLOBALFOUNDRIES INC
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