Where does the "energy shield" that often appears in various works come from?

Energy shields are basically standard equipment in science fiction movies. The closest verifiable information is a patent filed by Boeing: Method and system for attenuating shock waves through electromagnetic arcs. According to the documents described in the patent, this protection system is not used to withstand direct impact from objects such as bullets or fragments. Instead, it is used to protect vehicles or buildings from damage by surrounding destructive energy shock waves. Explosions often produce fragments and shock waves, the fragments of which can be stopped by armored doors or body armor, but they cannot stop the shock wave, which can be lethal. Boeing's patent is designed to solve the shock wave problem. Faced with an incoming shock wave, we have two options to protect the body: redirect the wave or absorb it. Boeing's method is to redirect the waves or refract them in the direction they are going. This shock wave attenuation system includes sensors and electromagnetic generators that can detect explosions. It also uses lasers, microwaves or electromagnetic arcs to rapidly heat the air to create air media with different densities to attenuate the explosion energy. First, the detector detects the shock wave generated by the nearby explosion source, and then uses the laser beam to create ionized matter in the air. When the explosion shock wave enters this area, the energy will be absorbed, dispersed, refracted and even reflected, thereby saving the lives of soldiers. . Of course, if a cannonball hits directly, this "shield" will not be able to stop it. This patent has certain feasibility, but it is currently in the patent stage and is still far from practical use. For example, creating plasma requires an instantaneous amount of energy. What methods can provide enough energy on the battlefield. How much does this device weigh and can it be loaded on a jeep?