Microstrip multi-band composite antenna
AssigneeSandbridge Technologies, Inc.
InventorsEmanoil Surducan, Daniel Iancu, John Glossner
Life of this patent
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Abstract
The multi-band antenna structure includes a first antenna having a band width about a middle frequency and a second antenna spaced and electrically isolated from the antenna. Ends of the second antenna are shorted to each other and the antenna floats electrically. The first and second antennas are planar and superimposed in parallel planes. At least two layers of dielectric material of a thickness is between the two antennas. A third layer of dielectric material of a third thickness is between the two antennas.
Claims20
A multi-band antenna structure comprising:
- a first antenna having a first band width about a first middle frequency;
- a second antenna spaced and electrically isolated from the first antenna;
- and
- an electrically floating split ring resonator spaced apart from the first and second antennas,
- wherein, ends of the second antenna are shorted to each other and the second antenna floats electrically, and wherein the antenna structure has a plurality of bandwidths each about a respective middle frequency of the antenna structure.
A multi-band antenna structure comprising:
- a first antenna having a matching circuit connected to feeding points of the first antenna;
- a second antenna spaced and electrically isolated from the first antenna and having a load connected to a feeding point of the second antenna;
- and
- an electrically floating split ring resonator spaced apart from the first and second antennas,
- wherein, the second antenna floats electrically, and wherein the antenna structure operates at a plurality of bandwidths and working band frequencies are selectable based on feeding point positions relative to a respective antenna length as well as impedance load values in both the first and second antennas.
Dependencies are inferred from the claim text.