Gain Improvement of Dual Band Antenna Based on Complementary Rectangular Split-Ring Resonator

Table 2

Parameters	Measured results
Patch antenna
Matching characteristics
Frequency, (GHz)	5.16
Reflection coefficient, (dB)	−22.3
Effective bandwidth at −5 dB (%)	1.9
Radiation characteristics
Peak directivity, (dBi)	7.55
Peak gain, (dB)	6.08
Radiation efficiency (%)	71.3