Multiband planar built-in radio antenna with inverted-L main and parasitic radiators
March 11, 2023. 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 ReferencesCompact antenna for portable microwave radio Low profile built-in multi-band antenna Multi-function antenna system for radio communication device Semi built-in multi-band printed antenna Dual frequency wideband radiator Internal multi-band antennas for mobile communications Compact broadband antenna Balanced antenna structure for bluetooth 2.4 GHz physical region semiconductor integrated circuit Patent #: 6674409 InventorAssigneeApplicationNo. 10507574 filed on 03/11/2003US Classes:343/702, With radio cabinet455/553.1, Radiotelephone having plural transceivers (e.g., for analog and digital, trunking and cellular, etc.)343/700MS, Microstrip343/795Sheet or wing typeExaminersPrimary: Chen, Shih-ChaoAssistant: A, Minh Dieu Attorney, Agent or FirmForeign Patent References
International ClassH01Q 1/24AbstractA multi-band radio antenna device (1) for a radio communication terminal, comprising a flat ground substrate (20), a flat main radiating element (2, 9) having a radio signal feeding point (3), and a flat parasitic element (5, 6). The main radiating 5 element is located adjacent to and in the same plane as said ground substrate, and preferably dielectrically separated therefrom. The antenna device is suitable for being used as a built-in antenna in portable radio terminals, such as a mobile phone (30).Other References
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