Patent ID: 9472849
Filing Date: 2016-10-18
CPC Classification: H01Q,H02J

Claim Text:
1. A rectifying apparatus comprising: a harmonic rejecting filter having coupled microstrip lines and a first radial stub connected to one of the coupled microstrip lines at a first point, wherein the harmonic rejecting filter is configured to prevent re-radiation of radio frequency (RF) harmonics; a matching circuit located at an output of the harmonic rejecting filter and configured to perform impedance matching between an antenna and a rectifying diode, the matching circuit having a second radial stub connected to said one of the coupled microstrip lines at a second point; the rectifying diode located at an output of the said one of the coupled microstrip lines; a direct current (DC)-pass filter having a third radial stub and configured to attenuate RF output by the rectifying diode to transfer DC power; and a DC return filter having a fourth radial stub and configured to lower a ripple voltage from a signal output by the DC-pass filter so as to supply the DC power stably to a load wherein the fourth radial stub is connected to said one of the coupled microstrip lines at a location between the first point and the second point.