EGSM频段偏置锁相环调制环路的设计

2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512) Pub Date : 2004-05-23 DOI:10.1109/ISCAS.2004.1328963

A. Hafez, W.F. Aboueldahab, A. Helmy

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引用次数: 4

摘要

本文提出了与偏置锁相调制环(OPLL)系统设计相关的问题。详细说明了环内杂散的来源。为了满足EGSM频段对传输掩码的严格要求，提出了中频频率的选择准则。此外，本文还给出了计算偏置混频器和反馈滤波器相对于中频信号抑制偏置混频器杂散信号所需的设计步骤。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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On the design of an offset-PLL modulation loop for the EGSM band

Issues associated with the system design of an offset phase locked modulation loop (OPLL) are presented in this paper. The sources of spurs within the loop are all explained in detail. In order to meet the transmission mask stringent requirements for the EGSM band, a criteria for choosing the IF frequency is presented. Additionally, the paper gives the design procedures for calculating the required suppression of the offset mixer spurious signals by the offset mixer and feed back filter with respect to the IF signal.

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来源期刊

2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512)

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