Terahertz Harmonic Operation of Microwave Fresnel Zone Plate Lens and Antenna: Frequency Filtering and Space Resolution Properties

<table>Frequency-domain harmonic action of binary FZP antenna: directive gain versus frequency.</table>

International Journal of Antennas and Propagation

Figure 5: Terahertz Harmonic Operation of Microwave Fresnel Zone Plate Lens and Antenna: Frequency Filtering and Space Resolution Properties 