Patent ID: 9543661
Date: 2017-01-10
CPC Classifications: H01Q

Claim:
1. An antenna device, comprising: a first metamaterial antenna structure comprising a first cell patch configured to receive and transmit signals in a specified first frequency band; a second metamaterial antenna structure comprising a second cell patch configured to receive and transmit signals in specified second and specified third frequency bands, the second metamaterial antenna structure configured to couple to the first metamaterial antenna structure using the second frequency band; a first port coupled to the first metamaterial antenna structure, the first port configured to operate in the specified first frequency band; a second port coupled to the second metamaterial antenna structure, the second port configured operate in the specified second and third frequency bands; and a control network with a first input impedance and a second input impedance, coupled between the second metamaterial antenna structure and the second port, wherein (1) the second input impedance is high at the second frequency band and the second input impedance and the first input impedance match the second antenna to the second port at the third frequency band, and (2) the first frequency band and the second frequency band reside in similar frequency ranges such that they interact, and (3) the third frequency band is separated from the first frequency band and the second frequency band; wherein the coupling established between the first metamaterial antenna structure and the second metamaterial antenna structure, and the high input impedance, operate to expand the first frequency band of the first metamaterial antenna structure.