Portable FM-CW radar device with frequency conversion by first and
second frequencies
    2.
    发明授权
    Portable FM-CW radar device with frequency conversion by first and second frequencies 失效
    便携式FM-CW雷达设备,通过第一和第二频率进行频率转换

    公开(公告)号:US5381153A

    公开(公告)日:1995-01-10

    申请号:US183907

    申请日:1994-01-21

    IPC分类号: G01S7/35 G01S13/34 G01S13/42

    CPC分类号: G01S13/345 G01S7/35

    摘要: A FM-CW radar device is provided for frequency-modulating a high frequency signal with a modulation signal, transmitting the modulated high frequency signal, receiving a signal reflected by a target object and frequency-modulating the reflection signal with a signal generated by a local oscillator signal source provided by branching a portion of the transmitting signal. A modulator is disposed between a radar transmitting section and a transmitting antenna. The modulator modulates the transmitting signal with a second frequency which is far lower than the radar transmitting frequency and twice as much as the sum or the difference of a Doppler frequency generated by a relative propagation velocity and a beat frequency generated by a propagation delay time. A first frequency converter frequency modulates the received signal reflected by the target object with the local oscillator. A second frequency converter frequency modulates the received signal with the second frequency, the second frequency being far lower than the radar transmitting frequency and twice as much as the sum or the difference of a Doppler frequency generated by a relative propagation velocity and a beat frequency generated by a propagation delay time.

    摘要翻译: 提供了一种FM-CW雷达装置,用于对调制信号进行频率调制,发送调制的高频信号,接收由目标物体反射的信号,并用本地产生的信号对反射信号进行频率调制 振荡器信号源通过分支发送信号的一部分而提供。 调制器设置在雷达发射部分和发射天线之间。 调制器以比雷达发射频率低得多的第二频率来调制发射信号,是由相对传播速度产生的多普勒频率和由传播延迟时间产生的节拍频率的和的差值的两倍。 第一变频器利用本地振荡器对目标物体反射的接收信号进行频率调制。 第二频率转换器以第二频率调制接收信号,第二频率远低于雷达发射频率,是由相对传播速度和产生的拍频产生的多普勒频率之和或差值的两倍 通过传播延迟时间。

    Radar apparatus
    3.
    发明授权
    Radar apparatus 失效
    雷达装置

    公开(公告)号:US5940029A

    公开(公告)日:1999-08-17

    申请号:US27150

    申请日:1998-02-20

    CPC分类号: H01Q3/26 G01S13/4409 H01Q3/24

    摘要: An array antenna radar apparatus has a single front end shared by a plurality of antennas, a first switch for cyclically connecting the antennas to the front end at a prescribed switching frequency, and a second switch for cyclically connecting the output of the front end to frequency converters corresponding to the antennas. The frequency converters frequency-convert intermediate-frequency signals of the respective antennas output by the front end to baseband signals at the switching frequency. Phase shifters and amplitude adjusting units apply a phase shift or amplitude adjustment to the outputs of the frequency converters and combine the resulting signals, thereby making it possible to detect a target in a desired direction.

    摘要翻译: 阵列天线雷达装置具有由多个天线共享的单个前端,用于以规定的开关频率将天线循环地连接到前端的第一开关和用于将前端的输出与频率循环连接的第二开关 转换器对应于天线。 频率转换器将由前端输出的各个天线的中频信号以开关频率对基带信号进行频率转换。 移相器和幅度调整单元对频率转换器的输出端进行相移或幅度调整,并将结果信号组合起来,从而可以在期望的方向上检测目标。

    Linear amplifier for amplifying a composite signal of plural frequency
components
    4.
    发明授权
    Linear amplifier for amplifying a composite signal of plural frequency components 失效
    用于放大多个频率分量的复合信号的线性放大器

    公开(公告)号:US5455538A

    公开(公告)日:1995-10-03

    申请号:US226703

    申请日:1994-04-12

    IPC分类号: H03F1/02 H03F1/32 H03F1/26

    CPC分类号: H03F1/3241

    摘要: A linear amplifier for amplifying a composite signal of plural frequency components to improve high efficiency without lowering the efficiency of a power load, includes a nonlinear amplifier circuit to which a signal having plural different frequency components is inputted, a 2nd-order distortion arithmetic circuit for generating and outputting a 2nd-order distortion component of the signal having the plural different frequency components, and an injection unit for injecting the 2nd-order distortion component to the signal having plural different frequency components. The nonlinear amplifier amplifies the signal injected with the 2nd-order distortion component.

    摘要翻译: 一种用于放大多个频率分量的复合信号以提高效率而不降低功率负载的效率的线性放大器,包括:输入具有多个不同频率分量的信号的非线性放大器电路;二阶失真运算电路,用于 产生和输出具有多个不同频率分量的信号的二阶失真分量,以及用于将二阶失真分量注入到具有多个不同频率分量的信号的注入单元。 非线性放大器放大了用二阶失真分量注入的信号。

    High frequency power amplifier with high efficiency and low distortion
    5.
    发明授权
    High frequency power amplifier with high efficiency and low distortion 失效
    高效率,低失真的高频功率放大器

    公开(公告)号:US5264807A

    公开(公告)日:1993-11-23

    申请号:US744435

    申请日:1991-08-13

    摘要: A high frequency amplifier containing: a constant envelope signal generation circuit for transforming an input signal to form two constant envelope signals where phases of the constant envelope signals correspond to an amplitude of an envelope of the input signal; two amplifying circuits for separately amplifying two constant envelope signals; and a power synthesizing circuit for synthesizing the first and second amplified signals to generate an amplified signal of the input electric signal, and reflecting remaining components of the first and second amplified signals which remaining components remain in the above synthesizing operation, toward the first and second amplifying circuits. Further, an input impedance of the power synthesizing circuit may be controlled by shifting phases of the above reflected components by respectively predetermined amounts, or by adaptively shifting phases of the above reflected components responding to an input level, so that a total efficiency of the high frequency amplifier is maximized. The high frequency amplifier may contain, instead of the above two amplifying circuits and the power synthesizing circuit, a circuit for inverting a phase of one of the two constant envelope signals; and a single-ended push-pull amplifier circuit for receiving the other of the two constant envelope signals, and an output of the phase inversion circuit, and synthesizing the received signals to generate an amplified signal of the input electric signal.

    Microwave power distributing and synthesizing device and microwave power
amplifying apparatus including the same
    6.
    发明授权
    Microwave power distributing and synthesizing device and microwave power amplifying apparatus including the same 失效
    微波功率分配合成装置及其微波功率放大装置

    公开(公告)号:US4598254A

    公开(公告)日:1986-07-01

    申请号:US630240

    申请日:1984-07-12

    IPC分类号: H03F3/20 H01P5/12 H03F3/60

    CPC分类号: H03F3/602 H01P5/12

    摘要: A microwave power distributing and synthesizing device includes: a first base and a second base facing the first base at a predetermined distance and having a hole. A coaxial line element including an inner conductive member coaxially penetrates through the hole of the second base and is spaced from an inner wall of the hole by the second base of a predetermined distance. The coaxial line element is supported on the first base at a bottom end and forms an antenna protruding from the hole of the second base into an input waveguide at a top end. At least one electric field distributing and synthesizing member is arranged perpendicularly to the coaxial line element and a plurality of waveguides are connected to the electric field distributing and synthesizing member. Also, a microwave power amplifying apparatus includes a first microwave power distributing and synthesizing device as described above, for receiving and distributing an input microwave signal; a plurality of amplifiers connected to output ports of the first microwave power distributing and synthesizing device; and a second microwave power distributing and synthesizing device as described above, having input ports connected to the amplifiers.

    摘要翻译: 微波功率分配和合成装置包括:第一基座和第二基座,其以预定距离面向第一基座并具有孔。 包括内部导电构件的同轴线元件同轴地穿过第二基座的孔并且通过第二基座与预定距离的孔的内壁间隔开。 同轴线元件在底端处支撑在第一基座上,并形成从第二基座的孔突出到顶端的输入波导的天线。 至少一个电场分配合成部件垂直于同轴线路元件设置,并且多个波导连接到电场分配合成部件。 此外,微波功率放大装置还包括如上所述的第一微波功率分配和合成装置,用于接收和分配输入的微波信号; 连接到第一微波功率分配合成装置的输出端口的多个放大器; 以及具有连接到放大器的输入端口的如上所述的第二微波功率分配和合成装置。

    Cavity resonator coupling type power distributor/power combiner
comprising coupled input and output cavity resonators
    7.
    发明授权
    Cavity resonator coupling type power distributor/power combiner comprising coupled input and output cavity resonators 失效
    腔谐振器耦合型功率分配器/功率组合器,包括耦合的输入和输出谐振腔

    公开(公告)号:US4686494A

    公开(公告)日:1987-08-11

    申请号:US571811

    申请日:1984-01-18

    IPC分类号: H01P5/12 H01P7/06 H03H7/48

    CPC分类号: H01P5/12

    摘要: A cavity resonator coupling type power distributor/power combiner can be used as a distributing amplifier or a combining unit. A first cavity resonator, having a single coupling terminal, and a second cavity resonator having a plurality of coupling terminals, are coupled by a coupling window or a coupling rod. As a result, a wide bandwidth of microwave electric power can be distributed or combined.

    摘要翻译: 空腔谐振器耦合型功率分配器/功率组合器可以用作分配放大器或组合单元。 具有单个耦合端子的第一空腔谐振器和具有多个耦合端子的第二空腔谐振器通过联接窗或耦合杆联接。 结果,微波功率的宽带宽可以分布或组合。

    Channel assigning method and system for radio base station group
    8.
    发明申请
    Channel assigning method and system for radio base station group 审中-公开
    无线基站组信道分配方法和系统

    公开(公告)号:US20070135150A1

    公开(公告)日:2007-06-14

    申请号:US11634393

    申请日:2006-12-06

    IPC分类号: H04Q7/20

    摘要: To reduce the processing load such as channel assignment and an authentication process in a plurality of radio base stations and communication terminals, and quickly and efficiently assign channels to the communication channels. The channel assigning method by a radio base station group, includes determining assignment of a communication channel between a communication terminal entering a radio area of the radio station group and all radio base stations within the radio station group by a base station in the radio base station group. Channel assigning information common to the radio base station group is updated as to the determined communication channel and a communication channel is assigned to the communication terminal with reference to the channel assigning information by each radio base station in the radio base station group other than the radio base station.

    摘要翻译: 为了减少多个无线基站和通信终端中的信道分配和认证处理等处理负荷,能够快速有效地向通信信道分配信道。 由无线基站组进行的信道分配方法包括:确定无线基站中的基站对进入无线站组的无线区域的通信终端与无线站组内的所有无线基站之间的通信信道的分配 组。 关于所确定的通信信道更新与无线基站组通用的信道分配信息,并参照无线基站组以外的无线基站中的无线基站的信道分配信息,向通信终端分配通信信道 基站。

    Constant-amplitude wave combination type amplifier
    9.
    发明授权
    Constant-amplitude wave combination type amplifier 失效
    恒幅波合成型放大器

    公开(公告)号:US5287069A

    公开(公告)日:1994-02-15

    申请号:US969522

    申请日:1992-10-30

    摘要: A constant-amplitude wave combination type amplifier includes a first amplifier outputting a first amplified output, and a second amplifier outputting a second amplified output. The constant-amplitude wave combination type amplifier also includes a first constant-amplitude wave generating circuit for combining an input wave and the second amplified output from the second amplifier and for generating a first constant-amplitude wave which is input to the first amplifier, and a second constant-amplitude wave generating circuit for combining the input wave and the first amplified output from the first amplifier and for generating a second constant-amplitude wave. Further, the constant-amplitude wave combination type amplifier includes a wave combining circuit for combining the first and second constant-amplitude waves and for generating an output wave.

    摘要翻译: 恒幅波合成型放大器包括输出第一放大输出的第一放大器和输出第二放大输出的第二放大器。 恒幅波合成型放大器还包括第一恒定幅度波发生电路,用于组合来自第二放大器的输入波和第二放大输出,并产生输入到第一放大器的第一恒定幅度波,以及 第二恒定幅度波生成电路,用于组合来自第一放大器的输入波和第一放大输出,并产生第二恒定幅度波。 此外,恒幅波合成型放大器包括用于组合第一和第二恒定幅度波并用于产生输出波的波合成电路。