In this work, we utilized a hybrid resonator to achieve near-perfect and dual-band absorption in the VHF and the LTE/Bluetooth/WiMAX bands. An electromagnetic (EM) wave at an oblique incidence was captured efficiently by exciting the fundamental magnetic resonances at 106 and 123.4 MHz. In particular, the effective thickness of the metamaterial perfect absorber (in comparison with the working wavelength ) is miniaturized to be at the high-order resonances (induced in the 2.0–4.0 GHz range) at a specific incident angle of EM wave, = 45, 30, 15 and = 5. Our results contribute to the realization of meta-devices, such as sensors, optical filters/switchers, photodetectors, and energy converters, for future applications in the radio to the microwave frequency bands.

在这项工作中，我们利用混合谐振器在 VHF 和 LTE/蓝牙/WiMAX 频段中实现近乎完美的双频段吸收。通过在 106 和 123.4 MHz 处激发基本磁共振，可以有效地捕获斜入射的电磁 (EM) 波。特别是，超材料完美吸收体的有效厚度（与工作波长相比）被小型化，在特定的电磁波入射角下处于高阶共振（在 2.0-4.0 GHz 范围内引起） = 45 , 30, 15 和 = 5. 我们的结果有助于实现元设备，例如传感器、光学滤波器/开关、光电探测器和能量转换器，以用于未来在无线电到微波频段的应用。