Antenna diversity in wireless communication terminals
Patent 5905467 Issued on May 18, 1999. Estimated Expiration Date: 
July 25, 2017. 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.
July 25, 2017. 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 ReferencesAdaptable antenna High performance antenna for hand-held and portable equipment Two position fold-over dipole antenna Portable radio apparatus with a folding structure Apparatus for multi-position antenna Portable radio housing incorporating diversity antenna structure Patent #: 5649306 InventorsApplicationNo. 900247 filed on 07/25/1997US Classes:343/702, With radio cabinet343/700MS, Microstrip343/724, Convertible to different antennas343/853, With plural antennas343/866, Loop type343/871With collapsible or foldable frameExaminersPrimary: Kim, Robert H.Assistant: Lauchman, Layla International ClassH01Q 1/2/4AbstractA wireless communication terminal comprises a first housing section including an antenna for enabling wireless communications with the terminal and a second housing section including a second communications antenna, the second housing section being extendibly connected to the first housing in an manner such that when the second housing section is in its extended position the second antenna is located one half wavelength from the first antenna. One or both of the antennas may be a fixed type, e.g., a whip or stub, or a retractable type, e.g., telescoping. The antennas may be located external or may be internal (e.g., patch type antennas) to the housing sections. | |
