A novel with V notched circular microstrip antenna is proposed

compared with traditional circular microstrip antenna

S11 of microstrip antenna with this structure can reach-26.9 dB in 2 GHz

second harmonic of S11 can reach-0.2 dB

third harmonic of S11 can reach-3 dB.Because of this good restrain function of higher harmonic

when constituting rectenna

it can replace filter which has complex structure and large size.In addition

using this kind of structure of the antenna has the effect of minishing the size when designing microstrip antenna adopted with fractal technology.Through the simulation and experimental test of rectenna containing the structure

receive DC voltage over 2.7V

which proves that it is feasible when applied to rectenna.