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1. 发明授权

US5943011A Antenna array using simplified beam forming network 失效
标题翻译：天线阵列采用简化波束形成网络
公开(公告)号：US5943011A
公开(公告)日：1999-08-24
申请号：US957657
申请日：1997-10-24
申请人： Joseph H. Acoraci , Henry H. Nguyen
发明人： Joseph H. Acoraci , Henry H. Nguyen
IPC分类号： H01Q3/22 , H01Q21/29 , H01Q25/02
CPC分类号： H01Q25/02 , H01Q21/293 , H01Q3/22
摘要： An antenna array for identifying aircrafts operating in a region of interest. The antenna includes a beam forming means and an antenna means. The beam forming means receives, processes and routes a sum and difference beam pattern to the antenna means. The antenna means transmits the sum and difference beam patterns to five separate beam locations in space.
摘要翻译：一种用于识别在感兴趣区域中操作的飞机的天线阵列。天线包括波束形成装置和天线装置。波束形成装置接收和处理并且将和波和差分波束图案路由到天线装置。天线装置将和波和差分波束图案发送到空间中的五个独立波束位置。

2. 发明授权

US06664931B1 Multi-frequency slot antenna apparatus 有权
标题翻译：多频天线装置
公开(公告)号：US06664931B1
公开(公告)日：2003-12-16
申请号：US10201015
申请日：2002-07-23
申请人： Henry H. Nguyen , Michael S. Pieper
发明人： Henry H. Nguyen , Michael S. Pieper
IPC分类号： H01Q1310
CPC分类号： H01Q13/10 , H01Q1/243 , H01Q1/38 , H01Q5/357 , H01Q5/40
摘要： A multi-frequency antenna apparatus includes an open-ended slot antenna (20) operable at high frequencies, cascaded in series with a antenna element (22) operable at low frequencies, results in two distinct antennas fed by a single excitation port (33). A U-shaped conductive strip (21) defining the slot antenna (20) has a ground connection (37) at one end near the open-ended side of the slot antenna (20) and a virtual feed point (30) on the other end coupled to the antenna element (22). The electrical length from the ground connection (37) to the feed point is about ¼ of a wavelength of the first frequency creating a virtual open at the feed point (30).
摘要翻译：多频天线装置包括可在高频下工作的开放式时隙天线（20），其与可在低频操作的天线元件（22）串联，导致由单个激励端口（33）馈送的两个不同的天线，。限定缝隙天线（20）的U形导电条（21）在靠近缝隙天线（20）的开放端侧的一端具有接地连接（37）和在另一端的虚拟馈电点（30）端部耦合到天线元件（22）。从接地连接（37）到馈电点的电气长度约为第一频率波长的1/4，在馈电点（30）处产生虚拟的开路。

3. 发明授权

US07221223B2 Methods and apparatus of managing a power amplifier 有权
公开(公告)号：US07221223B2
公开(公告)日：2007-05-22
申请号：US11191739
申请日：2005-07-28
申请人： Leroy A. Plymale, Jr. , Joseph L. Clark , Henry H. Nguyen , John S. Ruppel , Thomas L. Sears , Ronald Porco , Armando Vera Jimenez
发明人： Leroy A. Plymale, Jr. , Joseph L. Clark , Henry H. Nguyen , John S. Ruppel , Thomas L. Sears , Ronald Porco , Armando Vera Jimenez
IPC分类号： H03F1/00
CPC分类号： H03F1/0277 , H03F1/0288
摘要： In the present technique for power management of a power amplifier, it is first determined (314) whether a counter value corresponds at least in a predetermined way to a counter threshold, and if so, a current status of at least one amplifier bank from a plurality of amplifier banks in a power amplifier is switched (316).

4. 发明授权

US07221222B2 Methods and apparatus of managing a power amplifier 有权
公开(公告)号：US07221222B2
公开(公告)日：2007-05-22
申请号：US11191571
申请日：2005-07-28
申请人： Leroy A. Plymale, Jr. , Joseph L. Clark , Henry H. Nguyen , John S. Ruppel , Thomas L. Sears , Ronald Porco , Armando Vera Jimenez
发明人： Leroy A. Plymale, Jr. , Joseph L. Clark , Henry H. Nguyen , John S. Ruppel , Thomas L. Sears , Ronald Porco , Armando Vera Jimenez
IPC分类号： H03F1/00
CPC分类号： H03F1/0277 , H03F1/0288
摘要： In the present technique for power management of a power amplifier, an amplifier bank from a plurality of amplifier banks in a power amplifier that has been switched off for a longest period of time is assessed (826) to provide a lowest amplifier bank. With this lowest amplifier bank, an up-threshold that is associated to the lowest amplifier bank is assessed (828), followed by another assessment (820) of a current power output of the power amplifier. It is next determined (830) whether the current power output corresponds at least in a predetermined way to the up-threshold, and if so, the lowest amplifier bank is accordingly switched on (832).

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