High sensitivity frequency division field enhancement system based on substrate integrated waveguide

The enhancement of electromagnetic fields remains a primary focus of research in electromagnetic materials, with wideranging applications in industries such as wireless communications and radar systems. However, high-magnification devices often involve complex manufacturing processes and oversized dimensions, which impede their seamless integration into compact systems. We successfully fabricated an EMNZ medium using a T-shaped Substrate Integrated Waveguide (SIW) and the principle of dielectric doping, and based on this, proposed a field enhancement device with frequency selectivity. Through theoretical examination and full-wave electromagnetic simulations, we have verified the device's ability to accurately amplify the incoming magnetic field at two specific frequency points, with substantial amplification factors reaching 105 and 76 times, respectively. This device is characterized by low loss, high power capacity, ease of integration, and has broad application prospects.