It is shown that in an integrated YBa/sub 2/Cu/sub 3/O/sub 7/SrTiO/sub 3/ structure coplanar waveguide (CPW) electrical control of microwave propagation characteristics is possible. Microwave losses of less than 0.2 dB/cm at 10 GHz can be achieved at liquid nitrogen temperatures, provided ferroelectric films with perfect crystalline structures are used. Electrically controlled changes in effective dielectric permittivity of more than 40% are predicted at 77 K and 10 GHz. Sections of these CPWs can be used in electrically controlled phase shifters and resonators.
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机译:结果表明,在集成的YBa / sub 2 / Cu / sub 3 / O / sub 7 / SrTiO / sub 3 /结构共面波导(CPW)中,微波传播特性的电控制是可能的。如果使用具有完美晶体结构的铁电薄膜,则在液氮温度下,在10 GHz下可以实现小于0.2 dB / cm的微波损耗。在77 K和10 GHz时,有效介电常数的电控变化预计将超过40%。这些CPW的某些部分可用于电控移相器和谐振器。
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