US 7,583,231 B2 · Printed antenna with band rejection filter

Abstract

An antenna having a band rejection filter. The antenna includes: a radiator formed of a single plate, a grounding part formed of a single plate, a dielectric substrate including a surface on which the radiator is attached and another surface on which the grounding part is attached, and the band rejection filter connected to an end of the radiator. The band rejection filter includes a first capacitor connected to a signal line in parallel, a resonator including an end connected to the first capacitor in parallel and another end grounded, and a second capacitor including an end connected to the first capacitor in series and another end connected to the radiator in series. The resonator includes an inductor and a third capacitor connected to the inductor in series. As a result, the antenna may remove a frequency lower than an ultra wide band pass.

Claims14

Dependent claims

An antenna comprising:

a substrate;
a radiator formed on a surface of the substrate as a single plate so as to face toward one side of the substrate;
a grounding part formed on another surface of the substrate as a single plate;
and
a band rejection filter connected to an end of the radiator, wherein the band rejection filter comprises:
a first capacitor comprising a first end connected to a signal line transmitting a signal input from a signal source;
a resonator comprising a first end connected to a second end of the first capacitor and a second end grounded;
and
a second capacitor comprising a first end connected to the second end of the first capacitor and a second end connected to the radiator.

6 more elements

Dependencies are inferred from the claim text.

Printed antenna with band rejection filter

Life of this patent

Printed antenna with band rejection filter

Life of this patent

Abstract

Claims14