Miniaturized Dual Band Multislotted Patch Antenna on Polytetrafluoroethylene Glass Microfiber Reinforced for C/X Band Applications

Table 1

Properties of different substrates∗.

Parameters	FR4_epoxy	Rogers RT/duroid 5870	Taconic	Neltec NY
Dielectric constant	4.6	2.33	2.4	2.4
Loss tangent	0.02	0.0012	0.0016	0.0016
Water absorption (%)	<0.25	0.02	<0.02	<0.02
Tensile strength	<310 MPa	450 MPa	—	—
Volume resistivity (Mohm·cm)	8 × 10^7	2 × 10^7	1 × 10^7	1 × 10^7
Surface resistivity (Mohm)	2 × 10^5	3 × 10^7	1 × 10^7	1 × 10^7
Breakdown voltage (kV)	55	>60	—	>60
Peel strength (N/mm)	9	5.5	12	12

∗All information collected from the data sheet.