Broadband Integrated Power Dividers for Programmable Josephson Voltage Standards

@article{Elsbury_MTT_2008, abstract = {This paper addresses microwave circuits for increasing the output voltage of quantum voltage standards. To achieve a 10V programmable Josephson voltage standard, on the order of 250 000 Josephson junctions under uniform Kband microwave-frequency excitation are required. A broadband, lumped-element, Wilkinson power divider centered at 20 GHz was designed and fabricated to uniformly distribute power to arrays of junctions. The measured results from a single Wilkinson divider demonstrate low insertion loss, a 2:1 VSWR bandwidth of 10–26 GHz, and a 10 dB isolation bandwidth of 13–30 GHz. Utilizing the Wilkinson divider, a 16-way, 4-level, binary power divider network intended to excite approximately 18 000 Josephson junctions in each branch is demonstrated in a divider/combiner configuration. This configuration exhibits a 2:1 VSWR from 16.5–24.5 GHz. In the 15–25 GHz band of interest, the maximum insertion loss for the sixteen-way divider network is 1.10 dB, with an average of 0.72 dB, calculated from measurements on the back-to-back divider/combiner configuration.}, author = {Elsbury, Michael M. and Dresselhaus, Paul D. and Bergren, Norman F. and Burroughs, Charles J. and Benz, Samuel P. and Popovi´c, Zoya B. }, booktitle = {Microwave Theory and Techniques, IEEE Transactions on}, citeulike-article-id = {2743785}, journal = {IEEE Transactions on Microwave Theory and Techniques}, keywords = {divider}, posted-at = {2008-05-02 01:54:36}, priority = {3}, title = {Broadband Integrated Power Dividers for Programmable Josephson Voltage Standards}, year = {2008} }

TY - JOUR ID - Elsbury_MTT_2008 L3 - citeulike-article-id:2743785 TI - Broadband Integrated Power Dividers for Programmable Josephson Voltage Standards T2 - Microwave Theory and Techniques, IEEE Transactions on JF - IEEE Transactions on Microwave Theory and Techniques N2 - This paper addresses microwave circuits for increasing the output voltage of quantum voltage standards. To achieve a 10V programmable Josephson voltage standard, on the order of 250 000 Josephson junctions under uniform Kband microwave-frequency excitation are required. A broadband, lumped-element, Wilkinson power divider centered at 20 GHz was designed and fabricated to uniformly distribute power to arrays of junctions. The measured results from a single Wilkinson divider demonstrate low insertion loss, a 2:1 VSWR bandwidth of 10–26 GHz, and a 10 dB isolation bandwidth of 13–30 GHz. Utilizing the Wilkinson divider, a 16-way, 4-level, binary power divider network intended to excite approximately 18 000 Josephson junctions in each branch is demonstrated in a divider/combiner configuration. This configuration exhibits a 2:1 VSWR from 16.5–24.5 GHz. In the 15–25 GHz band of interest, the maximum insertion loss for the sixteen-way divider network is 1.10 dB, with an average of 0.72 dB, calculated from measurements on the back-to-back divider/combiner configuration. KW - divider AU - Elsbury, Michael AU - Dresselhaus, Paul AU - Bergren, Norman AU - Burroughs, Charles AU - Benz, Samuel AU - Popovi´c, Zoya PY - 2008/// ER -