会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Cavity oscillator with undesired mode absorbing waveguides for linear FM
    • 具有不想要的模式吸收波导的腔振荡器用于线性FM
    • US4542352A
    • 1985-09-17
    • US505568
    • 1983-06-17
    • Francis R. Yester, Jr.Paul H. GailusEdward V. Louis
    • Francis R. Yester, Jr.Paul H. GailusEdward V. Louis
    • H03B9/14H03C3/22H03B5/18H03B7/14H03C3/08H03C3/20
    • H03B9/141H03C3/22H03B2200/007
    • A modulated elongate cavity oscillator with minimized modulation nonlinearities includes a first cavity having dimensions which determine the fundamental resonant frequency of the oscillator, a gain element disposed in said first cavity that provides amplification to sustain oscillation, and a varactor diode disposed in said first cavity for modulating the fundamental frequency. A first waveguide is coupled to the first cavity for absorbing modes higher than the mode of the fundamental frequency which have an electric field maxima concurrent with the longitudinal center line of the first cavity. A second waveguide is coupled to the first cavity for absorbing modes higher than the mode of fundamental frequency which have an electric field minima concurrent with the longitudinal center line of the first cavity, whereby the first and second waveguides provide effective attenuation of higher order modes such that modulation nonlinearities due to the existence of higher order modes are substantially eliminated.
    • 具有最小调制非线性的调制细长腔振荡器包括具有确定振荡器的基本共振频率的尺寸的第一空腔,设置在所述第一腔中的增益元件,其提供放大以维持振荡,以及设置在所述第一腔中的变容二极管, 调制基频。 第一波导耦合到第一腔,用于吸收比基频的模式高的模式,其具有与第一腔的纵向中心线同时最大的电场。 第二波导耦合到第一腔,用于吸收高于基频模式的模式,其具有与第一腔的纵向中心线同时最小的电场,由此第一和第二波导提供有效衰减高阶模, 基本上消除了由于高阶模式的存在引起的调制非线性。
    • 3. 发明授权
    • Method and apparatus for enhancing an operating characteristic of a
radio transmitter
    • 用于增强无线电发射机的操作特性的方法和装置
    • US5564086A
    • 1996-10-08
    • US158551
    • 1993-11-29
    • Lawrence F. CyganPaul H. GailusWilliam J. TurneyFrancis R. Yester, Jr.
    • Lawrence F. CyganPaul H. GailusWilliam J. TurneyFrancis R. Yester, Jr.
    • H04B1/04
    • H04B1/0458
    • In a radio transmitter (100) that includes a power amplifier (104) and an antenna (106), a method for enhancing an operating characteristic of the radio transmitter (100) can be accomplished in the following manner. The power amplifier (104) provides a signal (113) to a variable matching network (111), wherein the signal (113) comprises energy to be radiated by the antenna (106). The variable matching network (111) couples the signal (113) to a sampler (112) that is operably coupled to an output of the variable matching network (111 ) and the antenna (106). The sampler (112) samples a forward component (114) and a reflected component (115) of the signal (113). The radio transmitter (100) processes the sampled forward and reflected components (116, 118) to produce a feedback control signal (120). The feedback control signal (120) is used to adjust the variable matching network (111 ), such that an operating characteristic of the radio transmitter (100) is enhanced.
    • 在包括功率放大器(104)和天线(106)的无线电发射机(100)中,可以以下列方式实现增强无线电发射机(100)的工作特性的方法。 功率放大器(104)向可变匹配网络(111)提供信号(113),其中信号(113)包括由天线(106)辐射的能量。 可变匹配网络(111)将信号(113)耦合到可操作地耦合到可变匹配网络(111)和天线(106)的输出的采样器(112)。 采样器(112)对信号(113)的正向分量(114)和反射分量(115)进行采样。 无线电发射机(100)处理采样的正向和反射分量(116,118)以产生反馈控制信号(120)。 反馈控制信号(120)用于调整可变匹配网络(111),使得无线电发射机(100)的工作特性得到增强。
    • 7. 发明授权
    • Dielectric resonator filter to achieve a desired bandwidth characteristic
    • 介质谐振滤波器实现所需的带宽特性
    • US4568894A
    • 1986-02-04
    • US567437
    • 1983-12-30
    • Mark A. GannonFrancis R. Yester, Jr.
    • Mark A. GannonFrancis R. Yester, Jr.
    • H01P1/208H01P1/203H01P1/219
    • H01P1/2084
    • A method and corresponding apparatus for maintaining constant bandwidth over a frequency spectrum in a microwave, dielectric resonator waveguide filter. Bandwidth is determined by the product of the resonant center frequency and the interresonator coupling coefficient. To maintain constant bandwidth while changing center frequency, the interresonator coupling coefficient must be chosen such that it varies inversely with changes in center frequency. The interresonator coupling coefficient is a function of the physical dimensions of the waveguide and the dielectric resonators, the dielectric constant and the spatial location of the resonators within the waveguide. Once the physical and spatial parameters have been established, the center frequency of the filter may be adjusted by altering the thickness of the resonators without changing the filter bandwidth.
    • 一种用于在微波介质谐振器波导滤波器中的频谱上保持恒定带宽的方法和相应装置。 带宽由谐振中心频率和谐振器耦合系数的乘积决定。 为了在改变中心频率的同时保持恒定的带宽,必须选择谐振器耦合系数,使其与中心频率的变化成反比变化。 谐振器耦合系数是波导和介质谐振器的物理尺寸,谐振器在波导内的介电常数和空间位置的函数。 一旦建立了物理和空间参数,可以通过改变谐振器的厚度而不改变滤波器带宽来调节滤波器的中心频率。
    • 8. 发明授权
    • Method for maintaining constant bandwidth over a frequency spectrum in a
dielectric resonator filter
    • 用于在介质谐振器滤波器中的频谱上保持恒定带宽的方法
    • US4559490A
    • 1985-12-17
    • US567433
    • 1983-12-30
    • Mark A. GannonFrancis R. Yester, Jr.
    • Mark A. GannonFrancis R. Yester, Jr.
    • H01P1/208H01P1/213H01P1/203H01P1/219
    • H01P1/2138H01P1/2084
    • A method and corresponding apparatus for maintaining constant bandwidth over a frequency spectrum in a microwave, dielectric resonator waveguide filter. Bandwidth is determined by the product of the resonant center frequency and the interresonator coupling coefficient. To maintain constant bandwidth while changing center frequency, the interresonator coupling coefficient must be chosen such that it varies inversely with changes in center frequency. The interresonator coupling coefficient is a function of the physical dimensions of the waveguide and the dielectric resonators, the dielectric constant and the spatial location of the resonators within the waveguide. Once the physical and spatial parameters have been established, the center frequency of the filter may be adjusted by altering the thickness of the resonators without changing the filter bandwidth.
    • 一种用于在微波介质谐振器波导滤波器中的频谱上保持恒定带宽的方法和相应装置。 带宽由谐振中心频率和谐振器耦合系数的乘积决定。 为了在改变中心频率的同时保持恒定的带宽,必须选择谐振器耦合系数,使其与中心频率的变化成反比变化。 谐振器耦合系数是波导和介质谐振器的物理尺寸,谐振器在波导内的介电常数和空间位置的函数。 一旦建立了物理和空间参数,可以通过改变谐振器的厚度而不改变滤波器带宽来调节滤波器的中心频率。