| 摘要: |
| 鉴于传统中频数字化短波收发机性能及复杂度受模拟前端电路制
约，介绍了射频直接低通采样的数字化处理方案，其中GC5016用于数字上下变频，重点对GC
5016中的级联积分梳状滤波器（CIC）和可编程有限冲激响应滤波器（PFIR）的联合设计进
行了仿真研究和硬件验证。该数字上下变频的带外抑制达100 dB，带内平坦度控制在
0.1 dB，完全满足射频数字化收发机的设计要求。 |
| 关键词: 短波收发机 数字上下变频 CIC滤波器 PFIR滤波器 |
| DOI： |
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| 基金项目: |
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| Design of DUC/DDC for HF transceiver based on GC5016 |
| ZHOU Yu-ting,GUO Wei,ZHOU Jian-ying |
| () |
| Abstract: |
| In view of the analog front circuits′ restrictions on the performance and compl
exity of traditional Intermediate Frequency(IF) digitalizing transceiver, a Radi
o
Frequency(RF) digitalizing scheme based on low-pass sample theory is introduced
, in which Digital Up/Down Convert (DUC/DDC)are performed by GC5016. This paper
focuses on the joint design of Cascaded Integrated Comb(CIC) and Programmable Fi
nite Impulse Response (PFIR) filter in GC5016 through simulation research and h
ardware verification. The out-band rejection of the DUC/DDC is up to 100 dB, and
band flatness is limited to 0.1 dB,so, the design fully satisfies the HF
transceiver′s requirement. |
| Key words: HF transceiver digital up/down convert CIC filter PFIR filter |
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