A microwave detector based on spoof surface plasmon polaritons structure

Leilei Liu,Dingwei Jiang

doi:10.1063/5.0041528

Abstract

In this paper, a Schottky diode detector based on spoof surface plasmon polariton (SPP) structure is reported. The detector consists of an input matching network, a Schottky diode, and an output filtering network. The proposed detector is designed using a step impedance section and λ/4 radial stub integrated in the circuit. Compared with the conventional microwave detector, experimental results show that the proposed detector achieves 31% improvement of detection sensitivity with the high input radio frequency (RF) power and 95% improvement of the detection sensitivity with the low input RF power by the SPPs. The proposed detector is attractive for use in aircraft, vehicles, and wireless communication due to its miniaturization, low-cost, and easy fabrication with planar circuits.

Highlights

Based on the successful development of radar technology and wireless communication technology, the demand for high-quality receivers is growing exponentially every year
Detection sensitivity measurements are performed on 19.3 GHz and 19.5 GHz for surface plasmon polariton (SPP) detector scitation.org/journal/adv
We presented a novel compact detector based on SPPs and Schottky diode

Summary

INTRODUCTION

Based on the successful development of radar technology and wireless communication technology, the demand for high-quality receivers is growing exponentially every year. Metamaterials, subwave-length artificial structures, have been widely applied to the control of electromagnetic (EM) fields or light waves through their access to various unusual material parameters, such as negative and nearzero refractive indices and extremely strong chirality.. Metamaterials, subwave-length artificial structures, have been widely applied to the control of electromagnetic (EM) fields or light waves through their access to various unusual material parameters, such as negative and nearzero refractive indices and extremely strong chirality.11 Such a concept has been applied to plasmonics to manipulate the dispersion state of surface waves at low frequencies, so as to spoof natural surface plasmons (SPs), while suppressing the metallic loss. The proposed detector has been fabricated and measured, and the results demonstrate a good overall performance

Design of detector based on SPPs

Analysis of SPPs

EXPERIMENTAL RESULTS

CONCLUSIONS