Two-port, three-port and four-port non-reciprocal devices with sequentially switched delay lines (SSDL)

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United States of America Patent

PATENT NO 10615475
APP PUB NO 20180219269A1
SERIAL NO

15692091

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Sequentially-Switched Delay Line (SSDL) can realize passive, nonmagnetic and non-reciprocal components for electromagnetic waves over ultra-wideband through the breaking of the time-reversal symmetry. A SSDL structure with six sections of transmission lines and five Single Pole Double Throw (SPDT) switches has been proposed as a three-port circulator in the literature. In this disclosure, a simpler structure consisting of only two sections of transmission lines with two switches is proposed, which can operate as a two-port non-reciprocal phase shifter (gyrator) with two SPDT switches, a three-port circulator with one DPDT switch and one SPDT switch, or a four-port circulator with two DPDT switches. Simulation results for one design at radio frequency demonstrated the expected non-reciprocal behavior from DC to 1.5 GHz for aforementioned three configurations.

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Patent Owner(s)

Patent OwnerAddress
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA1111 FRANKLIN STREET 5TH FLOOR OAKLAND CA 94607-5200

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Yuanxun Ethan Manhattan Beach, US 11 53

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