Invalidity dossier
US 6697019
Low-profile dual-antenna system
Current assignee: Kiryung Electronics Co Ltd
Added 9/23/2026, 7:27:16 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US6697019B1
Title: Low-profile dual-antenna system
Patent number: US6697019B1
Application number: US10/242,800
Filing date / Priority date: 2002-09-13
Publication (grant) date: 2004-02-24
Inventors: Kwon Hyuk-Joon; Iouri Sinelnikov
Original/current assignee (as listed): Kiryung Electronics Co Ltd
Status (as listed): Expired – Fee Related; anticipated expiration 2022-09-13
Classifications include: H01Q1/32, H01Q1/3275 (vehicle roof/horizontal-surface mounting), H01Q1/38 (conductive layer on insulating support), H01Q21/0025 (modular arrays), H01Q25/002 (patterns of different beamwidth)
Purpose (from the supplied text): The invention relates to antenna systems for a "dual-transmission single broadcasting service" and more particularly to vehicle dual-antenna systems receiving both satellite and terrestrial transmission signals. The text names SIRIUS RADIO and XM RADIO formats and the Satellite Digital Audio Radio Service (SDARS), noting terrestrial transmitters complement satellite coverage in blocked or out-of-coverage areas. It states objects of overcoming prior-art problems that the antenna systems of prior art are non-planar (unsuited to low-cost surface-mount mass production) and bulky/high-profile for rooftop vehicle mounting.
Plain-language scope (from the supplied text): The system has a first antenna receiving circularly polarized satellite transmissions and a second antenna receiving linearly polarized terrestrial transmissions. The terrestrial antenna is an array of radiating elements arranged symmetrically about the satellite antenna; the satellite antenna is a circularly polarized 2×2 array of linearly polarized single-feed patch elements with angular and phase arrangement producing a circularly polarized beam. Structure includes a mounting substrate with opposing top and bottom faces; on the top face, a first backgrounded dielectric substrate bearing the 2×2 patch satellite array; a high-dielectric-constant superstrate covering it; terrestrial array elements on the mounting substrate's top face arranged symmetrically around the first dielectric substrate. The terrestrial antenna has four linearly polarized elements in a conical-beam array, each a quarter-lambda grounded microstrip resonator (surface-mounted planar inverted-F antenna). Satellite and terrestrial arrays are concentric, and a radome covers the mounting substrate with surface-mount antennas and electronic module.
Source: https://patents.google.com/patent/[US6697019](/patent/US6697019)/en
What this excerpt does not establish: It does not provide the full claims, complete description (text is explicitly excerpted), the prior-art reference US 6,329,954 beyond a brief mention, drawing contents, or any figures/embodiments beyond those described above.
Generated 10/1/2026, 9:42:04 PM
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Assignment history
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Prior art
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