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A Novel Analysis of a Ku -Band Planar p-i-n Diode Limiter

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5 Author(s)
Seong-Sik Yang ; Dept. of Radio Sci. & Eng., Chungnam Nat. Univ., Daejeon ; Tak-Young Kim ; Deok-Kyu Kong ; So-Su Kim
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Two new analyses for a single-stage limiter were presented; one is an analytic approach based on the approximation of the voltage waveforms of a p-i-n diode in the limiter, while the other models the p-i-n diode by a p-n diode. The analytic expressions resulting from the analytic approach explicitly show the role of the diode parameters on the limiter performances, which can be used as a guide to select adequate p-i-n diodes for the limiter. The two analyses were verified using the large-signal p-i-n diode model developed by measurements. Our analysis was then extended to multistage limiters. Based on our analysis, we designed and fabricated a limiter with an insertion loss of 1.3 dB and a flat leakage of 11.7 dBm for a Ku-band input power of 20 W.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:57 ,  Issue: 6 )