A phase-locked loop with a jitter of 50 fs for astronomy applications

被引：5

作者：

Braun, Tobias T. ^{[1
]}

van Delden, Marcel ^{[1
]}

Bredendiek, Christian ^{[2
]}

Schoepfel, Jan ^{[1
]}

Hauptmeier, Stephan ^{[1
]}

Shillue, William ^{[3
]}

Musch, Thomas ^{[1
]}

Pohl, Nils ^{[1
,2
]}

机构：

[1] Ruhr Univ Bochum, Bochum, Germany

[2] Fraunhofer FHR, Wachtberg, Germany

[3] Natl Radio Astron Observ, Charlottesville, VA USA

来源：

INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES | 2023年 / 15卷 / 06期

关键词：

aerospace; E-Band; frequency synthesizer; local oscillator; phase-locked loop; SiGe; GHZ FMCW; MILLIMETER; SYNTHESIZER; SIGE; PLL;

D O I：

10.1017/S1759078722001386

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：

Radio telescopes are among the applications with the highest demands on a local oscillator (LO), which is used to receive and process the signals coming from the sky. Therefore the modules providing the required LO signal have traditionally been big and complicated. To overcome this disadvantage, we implement our own integrated frequency synthesizer inside a small LO module in this article. With this synthesizer we are able to achieve a jitter of only 50 fs integrated from 10 Hz to 2.5 GHz offset at a carrier frequency of 75 GHz. This is in part achieved by a very low in-band phase noise of -111.8 dBc at 10 kHz offset. The stabilizable frequency range is 62-88 GHz. Thus achieving promising results to fulfill this very demanding task with integrated frequency synthesizers in the future.

引用

页码：1012 / 1020

页数：9

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