{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T05:17:27Z","timestamp":1784092647553,"version":"3.55.0"},"reference-count":39,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2019,5,20]],"date-time":"2019-05-20T00:00:00Z","timestamp":1558310400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Natural Science Basic Research Plan in Shaanxi Province of China","award":["2018JM1025"],"award-info":[{"award-number":["2018JM1025"]}]},{"name":"the service local special plan project of Shaanxi Education Department","award":["17JF027"],"award-info":[{"award-number":["17JF027"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["11403018"],"award-info":[{"award-number":["11403018"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Atomic clocks provide frequency reference signals for communication, aerospace, satellite navigation and other systems. The redundant configuration of atomic clocks is necessary for ensuring the continuity and stability of the system. A radio frequency (RF) switch is usually used as a switching device in the switching system of the host atomic clock and the backup atomic clock. When the atomic clock fails, the switching between the host and the backup clock can be carried out quickly. Aiming at the fast switching requirements of atomic clock RF signals, this paper proposes a new series-shunt Positive Intrinsic Negative (PIN) switch design. In this paper, the evaluation of the RF switches is conducted by using the metrics of switching speed, insertion loss, isolation, return loss at on state and return loss at off state. Experimental result shows that the new PIN switch has better and more comprehensive performance metrics than the electromechanical switch, FET switch and conventional PIN switch. In particular, the switching speed is 53 ns faster than the conventional series-shunt PIN switch.<\/jats:p>","DOI":"10.3390\/s19102331","type":"journal-article","created":{"date-parts":[[2019,5,20]],"date-time":"2019-05-20T11:05:07Z","timestamp":1558350307000},"page":"2331","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Design of a RF Switch Used in Redundant Atomic Clock Configurations"],"prefix":"10.3390","volume":"19","author":[{"given":"Yuqing","family":"Hou","sequence":"first","affiliation":[{"name":"School of Information Science and Technology, Northwest University, Xi\u2018an 710127, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sangyuan","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, Northwest University, Xi\u2018an 710127, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sheng","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, Northwest University, Xi\u2018an 710127, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tao","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, Northwest University, Xi\u2018an 710127, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,5,20]]},"reference":[{"key":"ref_1","first-page":"17","article-title":"A Historical Review of U.S. Contributions to the Atomic Redefinition of the SI Second in 1967","volume":"122","author":"Lombardi","year":"2017","journal-title":"J. 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