Tuesday, December 15, 2015

Attain Terahertz Bandpass Response with Miniaturized Elements


With the rapid development of terahertz applications in recent years, numerous devices and circuits have been designed to operate at millimeter-wave and terahertz frequencies. Frequency-selective-surface (FSS) structures, for example, have been proposed for bandpass filtering at these frequencies. A new class of FSS structures, known as miniaturized-element FSSs (MEFSSs), is constructed of multi-layer arrays of non-resonant metallic elements with much smaller dimensions than the operational wavelength. Researchers from Australia recently proposed an MEFSS with a second-order filter response at terahertz frequencies. The proposed structure achieves a wide rejection band and large angular tolerance.

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