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1. 发明公开

EP2492256A2 Ceramic dielectric formulation for broad band UHF antenna 审中-公开
标题翻译：用于宽带UHF天线的陶瓷绝缘配方
公开(公告)号：EP2492256A2
公开(公告)日：2012-08-29
申请号：EP12156320.9
申请日：2007-06-07
申请人： Vishay Intertechnology Inc.
发明人： BERSHADSKY, Eli , KRAVCHIK, Marina , KATRARO, Reuven , BEN-BASSET, David , ALON, Dani
IPC分类号： C04B35/465 , H01G4/12
CPC分类号： H01Q1/38 , H01G4/1227 , H01Q9/0485
摘要： A dielectric ceramic composition has a dielectric constant, K, of at least 200 and a dielectric loss, DF, of 0.0006 or less at 1 MHz. The dielectric ceramic composition may be formed by sintering by firing in air without a controlled atmosphere. The dielectric ceramic composition may have a major component of 92.49 to 97.5 wt. % containing 60.15 to 68.2 wt. % strontium titanate, 11.02 to 23.59 wt. % calcium titanate and 7.11 to 21.32 wt. % barium titanate; and a minor component of 2.50 to 7.51 wt. % containing 1.18 to 3.55 wt. % calcium zirconate, 0.50 to 1.54 wt. % bismuth trioxide, 0.2 to 0.59 wt. % zirconia, 0.02 to 0.07 wt. % manganese dioxide, 0.12 to 0.35 wt. % zinc oxide, 0.12 to 0.35 wt. % lead-free glass frit, 0.24 to 0.71 wt. % kaolin clay and 0.12 to 0.35 wt. % cerium oxide. UHF antennas and monolithic ceramic components may use the dielectric ceramic composition.
摘要翻译：介电陶瓷组合物具有至少200的介电常数K和在1MHz下0.0006或更小的介电损耗DF。介电陶瓷组合物可以通过在没有受控气氛的情况下在空气中烧制来烧结而形成。介电陶瓷组合物可具有92.49至97.5重量％的主要组分。％含有60.15至68.2wt。％钛酸锶，11.02至23.59wt。％的钛酸钙和7.11至21.32wt。％钛酸钡; 和2.50至7.51wt。％的次要组分。％含有1.18至3.55wt。％锆酸钙，0.50-1.54wt。％三氧化铋，0.2至0.59wt。％的氧化锆，0.02至0.07wt。％二氧化锰，0.12-0.35wt。％的氧化锌，0.12-0.35wt。％无铅玻璃料，0.24-0.71wt。％高岭土和0.12-0.35wt。％氧化铈。 UHF天线和单片陶瓷组件可以使用介电陶瓷组合物。

2. 发明公开

EP1844564A1 METHOD FOR INTERWOVEN SPREADING CODES 审中-公开
标题翻译：程序对交织扩展码
公开(公告)号：EP1844564A1
公开(公告)日：2007-10-17
申请号：EP05712654.2
申请日：2005-02-03
申请人： Vishay Intertechnology Inc.
发明人： ALON, Dani , GAZIT, Meir
IPC分类号： H04J13/00
CPC分类号： H04J13/16
摘要： An interwoven spreading code is formed by a stretched spreading code series at a first frequency and a mirror of the stretched spreading code series at a second frequency. The interwoven spreading code can be used to spread a baseband signal. Data can be recovered through correlation of a received signal with the interwoven spreading code. The spreading code used in forming the interwoven spreading code can be a Barker code.

3. 发明公开

EP2492256A3 Ceramic dielectric formulation for broad band UHF antenna 审中-公开
标题翻译：对于UHF宽带天线的介电陶瓷配方
公开(公告)号：EP2492256A3
公开(公告)日：2012-09-19
申请号：EP12156320.9
申请日：2007-06-07
申请人： Vishay Intertechnology Inc.
发明人： BERSHADSKY, Eli , KRAVCHIK, Marina , KATRARO, Reuven , BEN-BASSET, David , ALON, Dani
IPC分类号： C04B35/465 , H01G4/12
CPC分类号： H01Q1/38 , H01G4/1227 , H01Q9/0485
摘要： A dielectric ceramic composition has a dielectric constant, K, of at least 200 and a dielectric loss, DF, of 0.0006 or less at 1 MHz. The dielectric ceramic composition may be formed by sintering by firing in air without a controlled atmosphere. The dielectric ceramic composition may have a major component of 92.49 to 97.5 wt. % containing 60.15 to 68.2 wt. % strontium titanate, 11.02 to 23.59 wt. % calcium titanate and 7.11 to 21.32 wt. % barium titanate; and a minor component of 2.50 to 7.51 wt. % containing 1.18 to 3.55 wt. % calcium zirconate, 0.50 to 1.54 wt. % bismuth trioxide, 0.2 to 0.59 wt. % zirconia, 0.02 to 0.07 wt. % manganese dioxide, 0.12 to 0.35 wt. % zinc oxide, 0.12 to 0.35 wt. % lead-free glass frit, 0.24 to 0.71 wt. % kaolin clay and 0.12 to 0.35 wt. % cerium oxide. UHF antennas and monolithic ceramic components may use the dielectric ceramic composition.

4. 发明公开

EP2289174A1 MINIATURE SUB-RESONANT MULTI-BAND VHF-UHF ANTENNA 审中-公开
标题翻译：微型-SUBRESONANZ-MEHRBAND-VHF-UHF-ANTENNE
公开(公告)号：EP2289174A1
公开(公告)日：2011-03-02
申请号：EP08796081.1
申请日：2008-07-02
申请人： Vishay Intertechnology Inc.
发明人： ALON, Dani , BEN-BASSAT, David
IPC分类号： H04B1/18 , H01Q21/30
CPC分类号： H01Q9/0442 , H01Q9/0485
摘要： A novel antenna system for receiving transmissions in the VHF and UHF frequency bands particularly suitable as a miniaturized antenna for UHF reception, such as of digital video broadcasting transmissions. The antenna system utilizes a combination of three techniques including (1) the use of dialect loading using a high dielectric constant ceramic substrate; (2) an antenna dielectrically loaded and tuned to a significantly higher frequency than desired; and (3) use of a tuning circuit to compensate for the frequency offset of the antenna thereby shifting the resonant frequency to cover the entire band. The antenna is intentionally designed to be too small to radiate at the frequency of interest. The antenna element is then 'forced' to be tuned to the desired lower frequency using passive (or active) reactive components as part of a tuning circuit. Multi-band operation is achieved by providing a bypass switch to connect the antenna element either to (1) a first receiver without the tuning circuit (i.e. high frequency tuning) or (2) a second receiver with the tuning circuit (i.e. low frequency tuning).

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