Design of a Wideband Agile Frequency Synthesizer for the S-C Band Based on DDS

Citation Author(s):
qing
chen
Nanjing University of Information Science and Technology
Submitted by:
Chen Qing
Last updated:
Wed, 01/08/2025 - 04:13
DOI:
10.21227/0qyt-5y14
Data Format:
*.avi; *.csv; *.txt
License:
Creative Commons Attribution
18 Views
Categories:
Communications
Keywords:
Direct Digital Synthesizer (DDS), Wideband Agile Frequency Synthesizer, Phase-Locked Loop, Frequency Planning, Satellite Communication.
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Abstract 

The agile frequency source based on direct digital synthesizer (DDS) has become a critical component in high-speed frequency-hopping anti-jamming communication due to its ultra-short frequency switching time, enabling hop rates greater than code rates. This paper proposes a frequency planning method to achieve a high spectral purity agile frequency synthesizer in the range of 3.43-5.73GHz. Experimental results show that the frequency synthesizer has a switching time of less than 10ns, a spuriousfree dynamic range greater than -53dBc, and phase noise values of -91.5dBc/Hz, -92.6dBc/Hz, -101.3dBc/Hz, and -123.5dBc/Hz at frequency offsets of 1kHz, 10kHz, 100kHz, and 1MHz, respectively when outputting 4.00GHz. These results fully validate the feasibility of the proposed method.

Instructions: 

This file contains all the test data of the experimental process, including

1.        phase noise,

2.        spurious,

 

3.        frequency hopping time

Comments

ALL data

Submitted by Chen Qing on Wed, 01/08/2025 - 04:01

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