Design of X-Band Frequency Source Based on PLL Technology

2014 ◽  
Vol 1046 ◽  
pp. 285-288
Author(s):  
Shuang Zhao ◽  
Le Le Zhang

The frequency synthesizer is an important part of modern communication system. It is widely used in digital communications, satellite communications, remote telemetry, radar, navigation and other fields. For frequency source with low phase noise and low spurious, this paper gives hardware architecture and implementation method circuit realization of the X-band frequency source which use phase locked and frequency multiplier theory. Its main targets are tested. The test results show that the performance of the frequency synthesizer is preferably with lower spurious level and phase noise.

2014 ◽  
Vol 7 (6) ◽  
pp. 637-644
Author(s):  
Vabya Kumar Pandit ◽  
Chitra Ramamurthy ◽  
Sourabh Basu ◽  
Deepak V. Ingale

A Ka-band carrier generator using phase-locked loop (PLL) frequency synthesizer is presented in this paper. The design uses integer-N PLL chip PE83336 as the important hardware support. The key idea of generating Ka-band frequency signal with low-phase noise is to generate a high-quality X-band frequency signal using PLL frequency synthesizer and employ a frequency multiplier to deliver the high-frequency output at the desired frequency band. Experimental measurements of the frequency synthesizer demonstrate the excellent performance, which is achieved with the Ka-band output with a frequency resolution of 5.7 MHz and phase noise better than −70 dBc/Hz at 1 kHz.


2014 ◽  
Vol 1078 ◽  
pp. 313-316
Author(s):  
Shuang Zhao ◽  
Yu Bo Yue

Frequency synthesizer provides frequency source for modern communication systems and computer systems. It is an essential part to the modern electronic system devices. This paper describes a wideband, frequency agile, low phase noise, low spurious frequency synthesizer. By using frequency multiplying technology, an S-band frequency source as the DDS clock is designed. The actual frequency source was tested. The test results show that the frequency synthesizer achieves the desired objectives.


2014 ◽  
Vol 662 ◽  
pp. 231-234
Author(s):  
Shuang Zhao ◽  
Dian Ren Chen

In modern communication system, the spacing of channel becomes ever more finely. For communication equipment, it has made ​​high demands on the stability and accuracy of the frequency. Based on DDS technology, combined with the multiplier circuit, we developed a high-speed X-band frequency hopping source. Experimental results show that this frequency source is with excellent frequency stability and low phase noise.


2011 ◽  
Vol 130-134 ◽  
pp. 3263-3266
Author(s):  
Jia Qi Liu ◽  
Ling Tian ◽  
Wei Hong ◽  
Jian Ye Zhang

This paper presents the design and fabrication of a compact 4-8GHz sweep frequency source at C-band with a hybrid frequency synthesizer technology. With DDS used as PLL’s reference, the frequency step size is as small as 3×10-4 Hz and the measured 1 kHz offset phase noise is-91.79dBc/Hz at 4GHz. This frequency sweep source has advantages of wide bandwidth, low phase noise, small frequency step size, low spurious, fast tuning speed, small size and low power consumption. So it is suitable for wireless hand-held test equipment and communication equipment.


2006 ◽  
Vol 27 (8) ◽  
pp. 1087-1093 ◽  
Author(s):  
Yonghong Zhang ◽  
Xiaohong Tang ◽  
Yong Fan ◽  
Zhengde Wu

2014 ◽  
Vol 707 ◽  
pp. 425-428
Author(s):  
Shuang Zhao ◽  
Yun Qing Liu

The phase noise performance of frequency source has a direct impact on the target measurement such as the adjacent channel interference of the electronic system, the transmission quality of information, the resolution of radar. In this paper, we achieved an X-band high stability, low phase noise frequency source which based on the DDS combination with frequency doubling technology. The test result shows that when the output of the frequency source is at 8.544GHz, the phase nosie is-103.58dBc/Hz at 1kHz and-101.94dBc/Hz at 10kHz.


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