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RF Limiter Metamaterial Using p-i-n Diodes

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4 Author(s)
Katko, A.R. ; Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA ; Hawkes, A.M. ; Barrett, J.P. ; Cummer, S.A.

We present the design and experimental implementation of an RF limiter metamaterial using a sheet of nonlinear metamaterials. We demonstrate that complementary electric inductive-capacitive resonators loaded with nonlinear p-i-n diodes can act as RF limiter unit cells. We design and fabricate limiter metamaterials and compare them to traditional circuit limiters. Our limiter metamaterial exhibits a minimum insertion loss under 3 dB, a maximum decrease in transmission of 6.95 dB and broadband performance, with a minimum decrease in transmission of 3 dB over 18% bandwidth. The limiter metamaterial is suitable for a wide variety of practical applications requiring protection of sensitive devices from high power.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )