设计并优化了一个基于共用跨导级结构的用于超高频rfid阅读器的正交下变频混频器。
A quadrature down-conversion mixer based on this topology is designed and optimized for an ultra high frequency RFID reader.
该电路采用二次变频低中频结构，集成了低噪声放大器、上变频混频器、下变频混频器等模块。
An RF front-end circuit for a fully integrated CMOS DTV tuner is presented in this paper, where double-conversion low IF architecture is employed.
在理论分析的基础上，本文设计了一个应用于北斗卫星导航系统接收机芯片中的低噪声放大器和下变频混频器。
On the base of theory analysis, a LNA and a mixer of a receiver chip used in compass navigation satellite system have been designed.
无需其他额外的支持电路，利用该评估板即可实现对CDMA和GPS低噪声放大器（LNA）和下变频混频器的评估。
The evaluation kits allow the evaluation of the CDMA and GPS low-noise amplifiers(LNA) , as well as the CDMA and GPS down-converter mixers , without the use of any additional support circuitry.
基于这种背景，本文提出了一种应用于超宽带系统的高性能（低压、高线性度、高变频增益）直接下变频混频器，采用标准的CMOS工艺设计和实现。
To solve these problems, this paper presents a high performance, namely low voltage, high linearity and high conversion gain, CMOS direct down conversion mixer for UWB (Ultra Wide Band) system.
混频器的变频损耗和噪声温度的测量可以用改变中频部分的噪声温度使接收机的系统噪声温度变化来加以确定。
The conversion loss and noise temperature of mixers is determined by changing the IF noise temperature so as to change the noise temperature of the receiver system.
讨论了一种利用噪声测量的方法来确定毫米波段混频器的变频损耗和噪声温度的一个实例。
An example for measuring the conversion loss and noise temperature of mixers in millimeter wave band by using the noise measurement method is discussed in this paper.
研究了一体化二次变频收发信机中各种组合频率干扰的产生原因：主要是由于混频器和放大器的非线性。
This paper investigates various combined frequency interference in integrated and double-converted transceivers, and points out that the reason is the non-linearity of frequency mixer and amplifier.
介绍采用微波混频器的上变频特性实现宽带平方电路的设计方法与具体实现，主要用于高码速率QPS K信号的载波恢复。
An introduction of the design and implementation of a broad-band square circuit is given, which is used to recover the carrier of the high speed QPSK signal.
最后给出了八毫米波段半衡混频器的变频损耗和噪声温度的测量结果。
It can be used for measuring the conversion loss and no- ise temperature of all kinds of the single or balanced mixers, subharmo…
最后给出了八毫米波段半衡混频器的变频损耗和噪声温度的测量结果。
It can be used for measuring the conversion loss and no- ise temperature of all kinds of the single or balanced mixers, subharmo…
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