Radio apparatus, radio system, and heat dissipation structure

A heat dissipation structure configured to dissipate heat generated by a heat generation source including a radiating element or a reflective element of a radio signal to an outside, wherein

• the heat dissipation structure is composed of a solid material having a thermal conductivity and an electrical conductivity, and comprises a heat dissipation plate and a plurality of heat dissipation fins provided in the heat dissipation plate, the plurality of heat dissipation fins being disposed on a side of the heat dissipation plate where the radiating element or the reflective element are disposed,
• the heat dissipation fins form a periodic structure along at least one direction on the heat dissipation plate, the heat dissipation fins having a rod-like shape or a plate-like shape, and
• tips of the plurality of heat dissipation fins form a virtual reflective surface that reflects incident waves to the plurality of heat dissipation fins,
• a distance between the heat dissipation fins is shorter than a height of the heat dissipation fins, and
• the heat dissipation fins are arranged to surround the radiating element or the reflective element in order to provide an Electrical Band Gap (EBG) structure around a periphery of the radiating element or the reflective element.

A radio apparatus comprising a heat dissipation structure configured to dissipate heat generated by a heat generation source including a radiating element or a reflective element of a radio signal to an outside,

• wherein
• the heat dissipation structure is composed of a solid material having a thermal conductivity and an electrical conductivity, and comprises a heat dissipation plate and a plurality of heat dissipation fins provided in the heat dissipation plate, the plurality of heat dissipation fins being disposed on a side of the heat dissipation plate where the radiating element or the reflective element are disposed,
• the heat dissipation fins form a periodic structure along at least one direction on the heat dissipation plate, and
• tips of the plurality of heat dissipation fins form a virtual reflective surface that reflects incident waves to the plurality of heat dissipation fins,
• wherein
• the heat dissipation fin comprises:
• a rod-like heat dissipation fin body protruding from the heat dissipation plate;
• and
• a planar patch provided at a tip of the heat dissipation fin body,
• a length of the heat dissipation fin body is shorter than λ×(N/2+¼), where λ is a wavelength of a predetermined frequency and N is an integer greater than or equal to zero, and
• the virtual reflective surface is composed of a plurality of patches.