Development of a Microwave Exciter for 87Sr+ Ion Frequency Standards


IEICE TRANSACTIONS on Electronics   Vol.E95-C   No.7   pp.1231-1233
Publication Date: 2012/07/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E95.C.1231
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
highly stable microwave exciter,  frequency stability,  analog lead-lag filter,  FPGA,  

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A highly stable microwave exciter system has been developed for 87Sr+ ion microwave frequency standards. The controller was built to optimize the transfer function of the phase-locked loop. The upper limit of the frequency tracking error achieved was 7.7 10-15 at τ = 1 s. A phase frequency discriminator using an FPGA was also made and applied to a phase-locked loop. This paper reports on the design of and results obtained from the microwave exciter for Sr+ ion microwave frequency standards.