TUNABLE RESONATOR
    1.
    发明申请
    TUNABLE RESONATOR 审中-公开
    可调共振器

    公开(公告)号:WO1993016522A1

    公开(公告)日:1993-08-19

    申请号:PCT/US1993000941

    申请日:1993-02-04

    Applicant: MOTOROLA, INC.

    Abstract: An integrated tunable resonator (100) includes a common semiconductor carrier (110). Formed on the common semiconductor carrier (110) is an integrated voltage variable capacitor (104). A bulk acoustic wave resonator is formed on the common semiconductor carrier (110) and coupled to the voltage variable capacitor (104). In one aspect of the present invention, a thin film resonator (106) is coupled to the voltage variable capacitor (104) both of which are formed on a common semiconductor substrate (110). The combination of these three elements provide for a tunable integrated resonator (100). In another aspect of the present invention, a surface acoustic wave resonator (522), formed on a common semiconductor carrier (514), is coupled to a voltage variable capacitor (520) in order to provide a tunable resonator (500).

    SPLIT RING RESONATOR BANDPASS FILTER WITH DIFFERENTIAL OUTPUT
    2.
    发明申请
    SPLIT RING RESONATOR BANDPASS FILTER WITH DIFFERENTIAL OUTPUT 审中-公开
    分体式谐振器带差分输出的BANDPASS滤波器

    公开(公告)号:WO1992002969A1

    公开(公告)日:1992-02-20

    申请号:PCT/US1991005584

    申请日:1991-08-06

    Applicant: MOTOROLA, INC.

    CPC classification number: H01P1/20381 H01P5/10

    Abstract: A bandpass filter (40) comprises a first microstrip split-ring resonator (12), having at least a first edge and second edge, the first edge having a gap (20) therein, and an input. The bandpass filter (40) also comprises a second microstrip split-ring resonator (14), having at least a first edge and a second edge, the first edge being coupled to the second edge of the first microstrip split-ring resonator, and the second edge of the second microstrip split-ring resonator comprising a gap (26) therein and a balanced output (30, 32).

    SPLIT RING RESONATOR BANDPASS FILTER WITH DIFFERENTIAL OUTPUT
    4.
    发明公开
    SPLIT RING RESONATOR BANDPASS FILTER WITH DIFFERENTIAL OUTPUT 失效
    ,差分输出USING A裂环谐振腔的带通滤波器。

    公开(公告)号:EP0542917A1

    公开(公告)日:1993-05-26

    申请号:EP91917084.0

    申请日:1991-08-06

    Applicant: MOTOROLA, INC.

    CPC classification number: H01P1/20381 H01P5/10

    Abstract: Un filtre passe-bande (40) comprend un premier résonateur annulaire divisé à microrubans (12) comportant au moins un premier bord et un second bord, le premier bord présentant un premier écartement (20), ainsi qu'une entrée. Le filtre passe-bande (40) comprend également un second résonateur annulaire divisé à microrubans (14) comportant au moins un premier bord et un second bord, le premier bord étant couplé au second bord du premier résonateur annulaire divisé à microrubans, et le second bord du second résonateur annulaire divisé à microrubans comportant un écartement (26), ainsi qu'une sortie équilibrée (30, 32).

    OSCILLATOR WITH IMPROVED SIDEBAND NOISE
    6.
    发明申请
    OSCILLATOR WITH IMPROVED SIDEBAND NOISE 审中-公开
    具有改进的边带噪声的振荡器

    公开(公告)号:WO1996023351A1

    公开(公告)日:1996-08-01

    申请号:PCT/US1996000376

    申请日:1996-01-11

    Applicant: MOTOROLA INC.

    Abstract: An oscillator (200) with improved sideband noise is disclosed. This improvement is accomplished without affecting the Q or the output power of the oscillator (200). The improvement is realized by increasing the rate of change of reactance over frequency. The increase in the rate of change is realized by placing two transmission lines (208, 210) in close proximity of each other. This increase assures oscillation while minimizing the sideband noise, and providing maximum bandwidth.

    Abstract translation: 公开了具有改进的边带噪声的振荡器(200)。 这种改进是在不影响振荡器(200)的Q或输出功率的情况下完成的。 通过提高频率上的电抗变化率来实现改进。 通过将两个传输线(208,210)彼此靠近放置来实现变化率的增加。 这种增加确保振荡,同时最小化边带噪声,并提供最大带宽。

    RECEIVER FOR AUDIO ENHANCEMENT AND METHOD THEREFOR
    7.
    发明申请
    RECEIVER FOR AUDIO ENHANCEMENT AND METHOD THEREFOR 审中-公开
    音频增强接收器及其方法

    公开(公告)号:WO2003047119A1

    公开(公告)日:2003-06-05

    申请号:PCT/US2002/038129

    申请日:2002-11-25

    CPC classification number: H04B1/18 H03G3/3052 H04B1/1027 H04B1/109

    Abstract: A receiver (10) includes an antenna (12), a preselector (14), an amplifier (16), a mixer (18), a filter (20), a signal strength measurement circuit (22), a radio frequency signal detector (26), and a processor (24). The processor (24) is programmed to receive a signal indicator level (42) from the signal strength measurement circuit (22), generate an automatic gain control command (44) based on the received signal indicator level (42), and send the automatic gain control command (44) to the amplifier (16) to control a gain of the amplifier (16). The processor (24) is programmed to receive an off channel signal strength (48) from the radio frequency signal detector (26), compare the off channel signal strength (48) to one or more threshold levels, generate a filter command (46), and send the filter command (46) to the filter (20). The filter command (46) identifies a cutoff frequency for the filter (20).

    Abstract translation: 接收器(10)包括天线(12),预选器(14),放大器(16),混频器(18),滤波器(20),信号强度测量电路(22),射频信号检测器 (26)和处理器(24)。 处理器(24)被编程为从信号强度测量电路(22)接收信号指示器电平(42),基于接收到的信号指示器电平(42)产生自动增益控制命令(44),并发送自动 增益控制指令(44)到放大器(16)以控制放大器(16)的增益。 处理器(24)被编程为从射频信号检测器(26)接收离开信道信号强度(48),将关闭信道信号强度(48)与一个或多个阈值电平进行比较,生成滤波器命令(46) ,并将过滤器命令(46)发送到过滤器(20)。 滤波器命令(46)识别滤波器(20)的截止频率。

    AMPLITUDE AND PHASE BALANCED VOLTAGE-CONTROLLED OSCILLATOR
    8.
    发明申请
    AMPLITUDE AND PHASE BALANCED VOLTAGE-CONTROLLED OSCILLATOR 审中-公开
    振幅和相平衡电压控制振荡器

    公开(公告)号:WO1992010026A1

    公开(公告)日:1992-06-11

    申请号:PCT/US1991008578

    申请日:1991-11-15

    Applicant: MOTOROLA, INC.

    CPC classification number: H03B5/1841 H03B19/00 H03B2201/0208 H03D9/06

    Abstract: An oscillator (40) comprises a resonator (44) for providing an oscillation frequency for the oscillator, an active network (42), coupled to the resonator, for driving the resonator, and a split-ring resonator (46) coupled to the main resonator and used to provide amplitude and phase balanced outputs. The split-ring resonator has at least a first edge, which is coupled to the resonator, and a second edge. The second edge has a gap (50) therein, and a first terminal located (48) at one side of the gap, and a second terminal (48') symmetrically located at the other side of the gap.

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