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公开(公告)号：US6130650A
公开(公告)日：2000-10-10
申请号：US686872
申请日：1996-07-26
申请人： Alastair Curtis , Stephen Goodwin
发明人： Alastair Curtis , Stephen Goodwin
CPC分类号： H01Q9/0421 , H01Q1/243
摘要： A curved inverted-L and F antenna is disclosed. In a preferred embodiment a curved inverted-F antenna 300 comprising a capacitative line 206 and inductive stub 204 is disposed above a correspondingly curved ground plane 308. Preferably, the separation between the capacitative line 206 and ground plane 308 is substantially constant and of the order of one tenth of the wavelength of the operating frequency of the antenna. Suitably the short circuit element of the antenna and the feed track 402 are non-parallel which has the effect of improving the radiated field in a short circuit direction.
摘要翻译： 公开了一种弯曲的倒L型和F型天线。 在优选实施例中，包括电容线206和电感短截线204的弯曲倒F天线300设置在相应弯曲的接地平面308上方。优选地，电容线206和接地平面308之间的间隔基本上是恒定的， 是天线工作频率波长的十分之一。 适当地，天线的短路元件和馈电轨道402是不平行的，其具有改善短路方向的辐射场的效果。
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公开(公告)号：US06008765A
公开(公告)日：1999-12-28
申请号：US892017
申请日：1997-07-14
摘要： An antenna assembly comprises an elongate antenna element (11) mounted in a support (5) and movable between a retracted position and an extended position. A helical antenna element (12) in electrical contact with the helical element is carried at one end of the elongate element. The coupling between the feed point and the antenna in the retracted and extended positions allow the same matching circuitry to be used in both conditions. The invention provides a compact and convenient dual antenna arrangement ideally suited for use in a portable cellular radio telephone.
摘要翻译： 天线组件包括安装在支撑件（5）中并可在缩回位置和延伸位置之间移动的细长天线元件（11）。 与螺旋元件电接触的螺旋天线元件（12）在细长元件的一端承载。 在收缩位置和延伸位置之间馈电点和天线之间的耦合允许在两个条件下使用相同的匹配电路。 本发明提供了一种紧凑且方便的双天线装置，理想地适用于便携式蜂窝无线电话。
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3.发明申请Communication semiconductor integrated circuit and radio communication system 审中-公开通信半导体集成电路和无线电通信系统公开(公告)号：US20060068748A1
公开(公告)日：2006-03-30
申请号：US11176302
申请日：2005-07-08
申请人： Kiyoshi Irie , Kazuaki Hori , Hiroshi Mori , Stephen Goodwin
发明人： Kiyoshi Irie , Kazuaki Hori , Hiroshi Mori , Stephen Goodwin
CPC分类号： H03D7/145 , H03D7/1458 , H03D7/1483 , H03D7/165 , H03D2200/0084 , H03D2200/0088
摘要： A direct upconversion system communication semiconductor integrated circuit includes a frequency converter circuit for up-converting a transmission signal and a notch filter located at a subsequent stage of the frequency converter circuit. The notch filter is served to cut off at least third-order harmonics of a local signal.
摘要翻译： 直接上变频系统通信半导体集成电路包括用于对发送信号进行上变频的变频电路和位于变频器电路的后级的陷波滤波器。 陷波滤波器用于切断本地信号的至少三次谐波。
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公开(公告)号：US20060128334A1
公开(公告)日：2006-06-15
申请号：US11170086
申请日：2005-06-30
申请人： Isao Ikuta , Akio Yamamoto , Yutaka Igarashi , Stephen Goodwin
发明人： Isao Ikuta , Akio Yamamoto , Yutaka Igarashi , Stephen Goodwin
CPC分类号： H03G3/3052 , H03G1/0088
摘要： To reduce circuit area and power consumption and suppress transient response occurring at switching in PGA of a programmable gain amplifier is provided a wireless communication receiver comprising PGAs for adjusting the gain of a received signal down-converted by mixers and sending it to base-band block. Within PGAs are provided HPFATT circuits formed of capacitors arranged in series, and ladder resistors arranged in parallel, with signal lines, and a plurality of switches. HPFATT is a circuit serving as a high-pass filter and an attenuator for gain switching, wherein switches are controlled by control signal sg from a controller. Amplifiers connected to the rear stage of the HPFATT circuit are formed of MOS transistors.
摘要翻译： 为了减少电路面积和功率消耗并抑制在可编程增益放大器的PGA中切换时发生的瞬态响应，提供了一种包括用于调节被混频器下变频的接收信号的增益的PGA的无线通信接收机，并将其发送到基带块 。 在PGA中提供由串联布置的电容器构成的HPFATT电路和与信号线并联布置的梯形电阻器以及多个开关。 HPFATT是用作高通滤波器和用于增益切换的衰减器的电路，其中开关由来自控制器的控制信号sg控制。 连接到HPFATT电路的后级的放大器由MOS晶体管形成。
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