Analysis of Image Frequency Interference in Altimeter Front-End Receiver

被引：0

作者：

Yu, Xiaofeng ^{[1
]}

Yan, Zhaowen ^{[1
]}

Xie, Shuguo ^{[1
]}

Liu, Yan ^{[1
]}

机构：

[1] BUAA, EMC Lab, Sch Elect & Informat Engn, Beijing 100191, Peoples R China

来源：

ISAPE 2008: THE 8TH INTERNATIONAL SYMPOSIUM ON ANTENNAS, PROPAGATION AND EM THEORY, PROCEEDINGS, VOLS 1-3 | 2008年

关键词：

image interference; image rejection ratio (IRR); electromagnetic compatibility (EMC);

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A major problem of the superheterodyne receivers is their response to the undesired frequencies, such as harmonic, image frequency signal. In this paper, special attention is paid to the image frequency interference. In order to analysis the effect of the image frequency signal to the superheterodyne, a behavioural model of a superheterodyne receiver of altimeter is presented and its electromagnetic compatibility is analyzed from the aspects of spectrum and power under the condition of image frequency interference. According to the simulation results, the methods of EMC reinforcement are given. The performance of the improved receiver is simulated and analyzed under the same condition. And the results based on the reinforcement system further verify the effectiveness of the method and the receiver achieves a higher image rejection ration.

引用

页码：1167 / 1170

页数：4

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