-
公开(公告)号：US6043786A
公开(公告)日：2000-03-28
申请号：US854282
申请日：1997-05-09
摘要： The multi-band slot antenna structure and method uses a single antenna to cover at least two distinct reception frequency bands using only one excitation port. In a first type of configuration, dual resonant slots (320, 325) are placed in close proximity and driven using a single differential excitation port having a positive node (370) and a negative node (375). In a second type of configuration, a half wavelength conductor (560, 660, 760) is layered over a quarter wavelength slot (520, 720) or half wavelength slot (620), and when the conductor is heavily magnetically coupled to the slot, a virtual electric short is achieved across the slot. In a third type of configuration, a quarter wavelength conductor (1060, 1160) is layered over a quarter wavelength slot (1020) or half wavelength slot (1120), and the conductor is used to capacitively or inductively load the slot (1120) at frequencies other than the natural resonant frequency of the slot (1120).
摘要翻译： 多频带时隙天线结构和方法使用单个天线仅使用一个激励端口来覆盖至少两个不同的接收频带。 在第一类型的配置中，使用具有正节点（370）和负节点（375）的单个差分激励端口紧密地放置双谐振槽（320,325）并进行驱动。 在第二类型的配置中，半波长导体（560,660,760）在四分之一波长时隙（520,720）或半波长时隙（620）上分层，并且当导体与槽重金属耦合时， 跨插槽实现虚拟电短路。 在第三种类型的配置中，四分之一波长导体（1060,1160）在四分之一波长时隙（1020）或半波长时隙（1120）上层叠，并且导体用于将时隙（1120）电容或电感地加载在 除了槽（1120）的固有谐振频率之外的频率。
-
公开(公告)号：US06175334B1
公开(公告)日：2001-01-16
申请号：US09286823
申请日：1999-04-06
IPC分类号： H01Q124
CPC分类号： H01Q21/29 , H01Q1/243 , H01Q1/52 , H01Q3/26 , H01Q5/321 , H01Q5/371 , H01Q5/378 , H01Q9/0421 , H01Q13/10 , H01Q21/28
摘要： A difference drive diversity antenna structure (200) and method for a portable wireless communication device (230) aligns a first linear antenna (240) parallel to a major axis (245) of the communication device and drives dual radiators (252, 254) of a second antenna (250) at equal magnitudes but with a 180 degree phase difference. A difference drive diversity antenna structure implemented in a portable wireless communication device maintains significant decorrelation between the first antenna (240) and the second antenna (250) over the common frequency ranges of the dual radiators (252, 254). Also, antenna currents on the body of the communication device are minimized and the effects of a hand or body near the communication device are reduced.
摘要翻译： 用于便携式无线通信设备（230）的差分驱动器分集天线结构（200）和方法对准与通信设备的主轴（245）平行的第一线性天线（240）并驱动双通道（252,254）的双散热器 第二天线（250），其幅度相等但具有180度的相位差。 在便携式无线通信设备中实现的差分驱动分集天线结构在双散热器（252,254）的公共频率范围内维持第一天线（240）和第二天线（250）之间的显着的去相关。 此外，通信设备的主体上的天线电流被最小化，并且减少了通信设备附近的手或身体的效果。
-
公开(公告)号：US5880646A
公开(公告)日：1999-03-09
申请号：US852766
申请日：1997-05-07
摘要： A balun network is provided having first and second conductor portions symmetric along a center line therebetween. A connecting conductor portion 130 couples ends of the first and second conductor portions with a spacing therebetween. The first and second conductor portions have a like-length of one-quarter wavelength. A balanced port 140 is provided between a first end of the first conductor portion 110 and a first end of the second conductor portion 120. An unbalanced port 150 is provided between a ground reference plane 160 and a first end of the first conductor portion.
摘要翻译： 提供了一种平衡 - 不平衡变换器网络，其具有沿着它们之间的中心线对称的第一和第二导体部分。 连接导体部分130将第一和第二导体部分的端部间隔开。 第一和第二导体部分具有四分之一波长的长度。 平衡端口140设置在第一导体部分110的第一端和第二导体部分120的第一端之间。不平衡端口150设置在接地参考平面160和第一导体部分的第一端之间。
-
公开(公告)号：US5966101A
公开(公告)日：1999-10-12
申请号：US854197
申请日：1997-05-09
摘要： A multi-layered compact slot antenna shortens the physical length of a slot antenna (710) by using more than one conductive layer, separated by a dielectric layer, to create inductor structures (790, 795) within a slot antenna. Adding inductance to a slot antenna allows a physical reduction in slot length without altering the antenna's radiant frequency range. The geometry of the inductor structures can be designed so that the electric current direction seen about the slot and the electric field direction across the slot is maintained, which aids antenna efficiency and allows arrangements of multiple compact slot antennas. Capacitor structures (780, 785) can also be included to balance out the additional stored magnetic energy in the inductor structures (790, 795).
摘要翻译： 多层紧凑缝隙天线通过使用由介电层隔开的多于一个的导电层来缩短缝隙天线（710）的物理长度，以在缝隙天线内产生电感结构（790,795）。 向缝隙天线添加电感可以在不改变天线辐射频率范围的情况下物理缩短槽长。 可以设计电感器结构的几何形状，使得保持关于槽周围的电流方向和跨槽的电场方向，这有助于天线效率并允许多个紧凑型缝隙天线的布置。 还可以包括电容器结构（780,785）以平衡电感器结构（790,795）中额外存储的磁能。
-
5.发明授权
公开(公告)号：US5924044A
公开(公告)日：1999-07-13
申请号：US806979
申请日：1997-02-26
IPC分类号： H04B1/38 , H04M1/02 , H04M1/03 , H04M1/21 , H04M1/57 , H04M1/725 , H04M19/04 , H04W88/02 , H04Q7/08
CPC分类号： H04M1/0254 , H04M1/0214 , H04M1/72522 , H04W88/02 , H04M1/57 , H04M1/72547 , H04M19/047
摘要： A modular communication device (102), which provides for radio frequency (RF) communication in a communication system (100), comprises a first modular unit (106) and a second modular unit (108). The first modular unit (106) includes a housing (110); a user interface (113) including a display (114) and keys (116); electrical circuitry (605), including a transceiver (606) coupled to an antenna (610); a battery connection interface (308) for receiving a battery (302); and a connection interface (120). The second modular unit (108) includes a housing (128); a user interface (135) including a speaker (650), a microphone (648), and a keypad (140); a retractable antenna (134); a battery connection interface (402) for receiving a battery (142); and a connection interface (143). When the connection interfaces (143, 120) are connected, the user interface (135), the antenna (134), and the battery connection interface (402) are coupled to the electrical circuitry (602).
摘要翻译： 在通信系统（100）中提供射频（RF）通信的模块化通信设备（102）包括第一模块单元（106）和第二模块单元（108）。 第一模块化单元（106）包括壳体（110）; 包括显示器（114）和键（116）的用户界面（113）; 电路（605），包括耦合到天线（610）的收发器（606）; 用于接收电池（302）的电池连接接口（308）; 和连接接口（120）。 第二模块化单元（108）包括壳体（128）; 包括扬声器（650），麦克风（648）和键盘（140）的用户界面（135）; 可伸缩天线（134）; 用于接收电池（142）的电池连接接口（402）; 和连接接口（143）。 当连接接口（143,120）被连接时，用户界面（135），天线（134）和电池连接接口（402）被耦合到电路（602）。
-
公开(公告)号：US5861853A
公开(公告)日：1999-01-19
申请号：US852767
申请日：1997-05-07
摘要： A half-wave balun network balanced for at least current is provided by a conductor section having contiguous conductor portions 130 and 140. A balanced port 110 is provided between ends of the conductor section. An unbalanced port 120 is provided between one end of the conductor section and a ground plane 107. A difference between impedances of the contiguous conductor portions 130 and 140 of the half-wave balun network provides for a selectable impedance ratio between the port impedances of the balanced and unbalanced ports 110 and 120. In one embodiment the number of different impedance conductor portions approaches infinity, thereby providing a tapered conductor section.
摘要翻译： 平衡至少电流的半波平衡 - 不平衡变压器网络由具有相邻导体部分130和140的导体部分提供。平衡端口110设置在导体部分的端部之间。 不平衡端口120设置在导体部分的一端和接地平面107之间。半波平衡 - 不平衡转换器网络的连续导体部分130和140的阻抗之间的差异提供了可变阻抗比 平衡和不平衡端口110和120.在一个实施例中，不同阻抗导体部分的数量接近无穷大，从而提供锥形导体部分。
-
公开(公告)号：US06421379B1
公开(公告)日：2002-07-16
申请号：US09320041
申请日：1999-05-26
IPC分类号： H03H730
CPC分类号： H04L27/2071
摘要： When an input digital signal, having a portion with an associated control value, is connected to a digital filter with adaptive compensation, the digital filter with adaptive compensation selects one of a plurality of coefficient scalers (9501, 9601) as directed by a control bus (990). As the input digital signal propagates through the filter, one of a plurality of next coefficient scalers (9502,9602) are selected by the control bus (990). The digital filter with adaptive compensation interleaves in time the coefficients of multiple conventional filters in order to filter each portion of the digital signal according to its associated control value.
摘要翻译： 当具有相关控制值的部分的输入数字信号被连接到具有自适应补偿的数字滤波器时，具有自适应补偿的数字滤波器按照控制总线的指示选择多个系数缩放器（9501,9601）中的一个 （990）。 当输入数字信号通过滤波器传播时，多个下一系数缩放器（9502,9602）之一由控制总线（990）选择。 具有自适应补偿的数字滤波器在时间上交替多个常规滤波器的系数，以便根据其相关联的控制值对数字信号的每个部分进行滤波。
-
8.发明授权Electronic device and associated method for charging an energy storage circuit with a DC-DC converter 有权一种用DC-DC转换器对能量存储电路进行充电的电子装置及相关方法
公开(公告)号：US6140807A
公开(公告)日：2000-10-31
申请号：US164559
申请日：1998-10-01
IPC分类号： G05F1/46
摘要： An electronic device includes an electrical circuitry interface (112) adapted for coupling with an energy source (106), a comparator (138), and a DC-DC converter circuitry (134) having a switch circuit (161) and an energy storage circuit (132). The switch circuit (161) is coupled to the electrical circuitry interface (112) and to the energy storage circuit (132), and is controlled to charge the energy storage circuit (132). A first input (166) of the comparator (138) is coupled to a voltage that varies with a nominal supply voltage of the energy source (106). A second input (168) of the comparator (138) is coupled to a threshold voltage. A comparator output (160) of the comparator (138) is coupled to the switch circuit (161). In operation, the DC-DC converter circuitry (134) charges the energy storage circuit (132) for a certain time period or until the stored voltage is greater then a desired voltage. The DC-DC converter circuitry (134) is controlled to stop charging the energy storage circuit (132) when current demands cause the energy source voltage to exceed a threshold voltage.
摘要翻译： 电子设备包括适于与能量源（106），比较器（138）和DC-DC转换器电路（134）耦合的电路接口（112），DC / DC转换器电路（134）具有开关电路（161）和能量存储电路 （132）。 开关电路（161）耦合到电路接口（112）和能量存储电路（132），并被控制以对能量存储电路（132）充电。 比较器（138）的第一输入端（166）耦合到随能量源（106）的标称供电电压而变化的电压。 比较器（138）的第二输入（168）耦合到阈值电压。 比较器（138）的比较器输出（160）耦合到开关电路（161）。 在操作中，DC-DC转换器电路（134）对能量存储电路（132）充电一定时间，或直到所存储的电压大于期望的电压。 当电流需求导致能量源电压超过阈值电压时，控制DC-DC转换器电路（134）以停止对能量存储电路（132）的充电。
-
公开(公告)号：US5977916A
公开(公告)日：1999-11-02
申请号：US853772
申请日：1997-05-09
IPC分类号： H01Q21/22 , H01Q1/24 , H01Q1/52 , H01Q3/26 , H01Q5/00 , H01Q5/321 , H01Q5/371 , H01Q5/378 , H01Q9/04 , H01Q13/10 , H01Q21/24 , H01Q21/28 , H01Q21/29 , H01Q21/30 , H04B7/04
CPC分类号： H01Q21/29 , H01Q1/243 , H01Q1/52 , H01Q13/10 , H01Q21/28 , H01Q3/26 , H01Q5/321 , H01Q5/371 , H01Q5/378 , H01Q9/0421
摘要： A difference drive diversity antenna structure (200) and method for a portable wireless communication device (230) aligns a first linear antenna (240) parallel to a major axis (245) of the communication device and drives dual radiators (252, 254) of a second antenna (250) at equal magnitudes but with a 180 degree phase difference. A difference drive diversity antenna structure implemented in a portable wireless communication device maintains significant decorrelation between the first antenna (240) and the second antenna (250) over the common frequency ranges of the dual radiators (252, 254). Also, antenna currents on the body of the communication device are minimized and the effects of a hand or body near the communication device are reduced.
摘要翻译： 用于便携式无线通信设备（230）的差分驱动器分集天线结构（200）和方法对准与通信设备的主轴（245）平行的第一线性天线（240）并驱动双通道（252,254）的双散热器 第二天线（250），其幅度相等但具有180度的相位差。 在便携式无线通信设备中实现的差分驱动分集天线结构在双散热器（252,254）的公共频率范围内维持第一天线（240）和第二天线（250）之间的显着的去相关。 此外，通信设备的主体上的天线电流被最小化，并且减少了通信设备附近的手或身体的效果。
-
公开(公告)号：US5930299A
公开(公告)日：1999-07-27
申请号：US694004
申请日：1996-08-08
CPC分类号： H04L27/2071
摘要： In a digital modulator with compensation, a digital bit stream from a microphone (705), a speech coder (706), and a channel encoder (707) is sent to an encoder (720) which translates the bits into I/Q digital pulses with phase shift keying. A symbol correlater (730) notes when predetermined target phase symbol sequences, which contribute to a high peak-to-average power ratio, enter the encoder. If a target symbol sequence is encountered, the correlater directs compensation amplifiers or compensation filters (734, 737) of the I/Q signals. Next, I/Q pulse shaping filters (764, 765) filter the I/Q pulses according to communication system specifications. The filtered I/Q signals are then sent to a quadrature modulator (790) for RF modulation. Compensation of target symbol sequences reduces the negative impact they have on peak-to-average power ratio and increases the efficiency of the power amplifier (795) which extends the battery life of a communication device (700).
摘要翻译： 在具有补偿的数字调制器中，来自麦克风（705），语音编码器（706）和信道编码器（707）的数字比特流被发送到编码器（720），其将比特转换成I / Q数字脉冲 带相移键控。 符号相关器（730）注意到当有助于高峰值与平均功率比的预定目标相位符号序列进入编码器时。 如果遇到目标符号序列，则相关器指示I / Q信号的补偿放大器或补偿滤波器（734,737）。 接下来，I / Q脉冲整形滤波器（764,765）根据通信系统规格对I / Q脉冲进行滤波。 然后将经滤波的I / Q信号发送到正交调制器（790）以进行RF调制。 目标符号序列的补偿减少了它们对峰值对平均功率比的负面影响，并且提高了延长通信设备（700）的电池寿命的功率放大器（795）的效率。
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.013 秒)
