Design, Fabrication, and Testing of Active Skin Antenna with 3D Printing Array Framework

Table 2

Electrical properties of every layer.

Layer	Material	Dielectric constant
Upper facesheet	Glass/epoxy	4
Honeycomb core	Nomex honeycomb	1.1
Array framework	Photosensitive resin	2.4
Antenna element	RO4350B	3.66