Three dimensional polygon antennas
Patent 6400337 Issued on June 4, 2002. Estimated Expiration Date: 
May 11, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 11, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLoop antenna apparatus with variable directivity Antenna structure for providing a uniform field Multi-directional RFID antenna Patent #: 6069564 InventorApplicationNo. 853991 filed on 05/11/2001US Classes:343/867, Plural; plural or tapped coils343/742PluralExaminersPrimary: Wong, DonAssistant: Nguyen, Hoang Attorney, Agent or FirmInternational ClassH01Q 021/00AbstractA series of antennas with a three-dimensional structure based on the folding back onto themselves of planar multi-loop arrays of more than two elements is provided. In this way, more compact antennas are provided, with improved broadband design capabilities and wider bandwidths, both in impedance and gain. A three-dimensional antenna array comprises a plurality of rectangular full-wave loops arranged in a three-dimensional array, comprising a plurality of radiators, each radiator having two ends, and a plurality of transmission lines, each transmission line connecting a pair of the radiators through a corresponding end of each connected radiator, wherein each of the plurality of radiators is fed from a common feedpoint substantially at a geometric center of the three-dimensional antenna array. | |
