Broadband coupling transducers for magneto-inductive cables
نویسندگان
چکیده
A broadband resonant transducer capable of low-loss coupling between magneto-inductive (MI) waveguides and a real impedance is introduced. The transducer is an L–C circuit resonating at the resonant frequency of the elements forming the guide. However, the values of the components in the transducer are different, and chosen to obtain two separate nulls in reflection so that low reflection is obtained over a wide spectral range. The transducer can be incorporated into the MI waveguide itself, allowing a connection between a MI cable and a conventional system to be made as a simple splice. The design is confirmed using 2 m length of low-loss thin-film MI cables formed using copper-clad polyimide and operating near 100 MHz frequency.
منابع مشابه
Thin-film magneto-inductive cables
Magneto-inductive cables for low (ca 100 MHz) radio frequencies are demonstrated in thin-film form. 20 cm long resonant elements are formed using double-sided patterning of copper-clad polyimide, based on single-turn inductors and parallel-plate capacitors that use the substrate as an interlayer dielectric. Continuous cables are formed by overlaying elements, in an arrangement that allows a hig...
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