Dielectric wireless receiver

It offers immunity against damage from intense electromagnetic radiation, produced by EMP and HPM sources.

These induce high voltage transient surges of thousands of volts which can punch through the gate insulator in the transistor and can destroy the circuit's metal interconnects.

To immunize electronic systems against such threats, the “soft spots” (metal and transistor) in a conventional receiver front-end, must be eliminated.

The Dielectric Resonator Antenna (DRA) in the front-end, functions as a concentrator of incoming electromagnetic field.

This front-end design significantly increases the threshold for damage associated with high power microwave signals.

Fig. 1 Concept of the photonic-assisted all-dielectric RF front-end technology. An electro-optic (EO) powered dielectric antenna captures the free-space RF signal. The embedded optical link provides complete electrical isolation between the air interface and the electronic circuitry, which is located only after the photodetector (PD).
Fig. 2 Details of the receiver front-end design. a , Three-dimensional drawing of the DRA. b , Numerical simulation of the distribution of the electric field of the mode inside the DRA in meridian plane. The field profile shown in Figure 2b does not include the presence of EO resonator.