Switched tuneable frequency multiplier
    21.
    发明授权
    Switched tuneable frequency multiplier 失效
    开关可调倍频器

    公开(公告)号:US4342008A

    公开(公告)日:1982-07-27

    申请号:US229473

    申请日:1981-01-29

    Inventor: Robert E. Jewett

    CPC classification number: H03B23/00 H03B19/18 H03B2201/0241

    Abstract: A broadband high frequency signal generator is disclosed having a low and a high frequency swept signal source connected to a YIG tuned frequency multiplier. One end of an output coupling loop for the YIG is connected to ground through a PIN diode, and the low frequency signal source is connected to the junction of the output coupling loop and the PIN diode. When the PIN diode is caused to conduct, signals from the high frequency source are passed through the YIG tuned multiplier to an output in the conventional manner. When the PIN diode is not conducting, signals from the low frequency source are passed to the output through the output coupling loop.

    Abstract translation: 公开了一种宽带高频信号发生器,其具有连接到YIG调谐倍频器的低频和高频扫频信号源。 用于YIG的输出耦合回路的一端通过PIN二极管连接到地,低频信号源连接到输出耦合回路和PIN二极管的结。 当PIN二极管导通时,来自高频源的信号以常规方式通过YIG调谐倍增器输出到输出端。 当PIN二极管不导通时,来自低频源的信号通过输出耦合回路传递到输出端。

    IMPROVED SIGNAL GENERATOR AND TESTING APPARATUS
    22.
    发明申请
    IMPROVED SIGNAL GENERATOR AND TESTING APPARATUS 审中-公开
    改进的信号发生器和测试装置

    公开(公告)号:WO1992022129A1

    公开(公告)日:1992-12-10

    申请号:PCT/GB1992001008

    申请日:1992-06-04

    CPC classification number: H03B23/00 H03B2200/0092 H03B2201/0241

    Abstract: A method as described for setting the frequency of an RF source containing an oscillator having coarse and fine frequency controlling elements for generating RF signals for testing the RF response of devices by sweeping the RF signal source through a band of frequencies and detecting and analysing the signal transmitted by the device under test. A coarse comb signal based on harmonics of a first signal NMHz, and a fine comb signal based on harmonics of a second signal nMHz (N being much greater than n), are generated and the coarse and fine frequency controlling elements are calibrated. The oscillators are then swept through the frequency to which a marker relates and just beyond to detect the presence of the leading and trailing edges of the marker and the fine tuning control signal values corresponding to the edges are noted, a value for the frequency controlling signal corresponding to the mid-position of the marker is computed from the arithmetic mean of the leading and trailing edge values, and thus computed value used to calibrate the oscillator subsequently. Apparatus for performing the method is also described.

    Abstract translation: 一种用于设置包含振荡器的RF源的频率的方法,该振荡器具有用于产生用于产生RF信号的粗略和精细频率控制元件的振荡器,用于通过频率扫描RF信号源并检测和分析信号来测试器件的RF响应 由被测设备传输。 产生基于第一信号NMHz的谐波的粗梳信号和基于第二信号nMHz(N远大于n)的谐波的精梳信号,并且粗调和精细频率控制元件被校准。 然后,振荡器被扫描通过标记所关联的频率并且刚刚超过以检测标记的前沿和后沿的存在,并且记录对应于边缘的微调控制信号值,频率控制信号的值 对应于标记的中间位置根据前沿和后沿值的算术平均值计算,并因此计算用于随后校准振荡器的值。 还描述了用于执行该方法的装置。

    IMPROVED SIGNAL GENERATOR AND TESTING APPARATUS
    23.
    发明申请
    IMPROVED SIGNAL GENERATOR AND TESTING APPARATUS 审中-公开
    改进的信号发生器和测试装置

    公开(公告)号:WO1992022128A1

    公开(公告)日:1992-12-10

    申请号:PCT/GB1992001007

    申请日:1992-06-04

    CPC classification number: H03B23/00 H03B2200/0092 H03B2201/0241

    Abstract: An RF source for generating RF signals by which components can be tested, which comprises a master oscillator (26), coarse and fine tuning controls (110, 112) and circuit means (Figure 6 and (34) Figure 5) for generating two sets of harmonically related markers for calibration, a low resolution set for coarse calibration and a higher resolution set (separated by smaller frequency intervals) for more accurate calibration, and signal generating means (20, 28) for producing control signals for operating the coarse and fine tuning controls, the values of the control signals being determined by reference to the harmonically related markers and the displacement of the desired frequency at which the master oscillator is to oscillate from the frequency of at least the nearest marker. A method of setting up such an RF source to oscillate at a particular frequency F is described using the two sets of markers to calibrate the signal generator.

    Abstract translation: 用于产生可以测试组件的RF信号的RF源,其包括主振荡器(26),粗调和微调控制(110,112)和电路装置(图6和图34),用于产生两组 用于校准的谐波相关标记,用于粗校准的低分辨率集合和用于更精确校准的较高分辨率集合(由较小频率间隔分隔)以及用于产生用于操作粗细和精细的控制信号的信号发生装置(20,28) 调谐控制,通过参考谐波相关标记确定控制信号的值,以及从至少最近的标记的频率振荡主振荡器的期望频率的位移。 使用两组标记来描述以这种RF源设置在特定频率F振荡的方法来校准信号发生器。

    Fast switching drive circuit for an oscillator
    24.
    发明公开
    Fast switching drive circuit for an oscillator 失效
    用于振荡器的快速切换驱动电路

    公开(公告)号:EP0481194A3

    公开(公告)日:1992-11-25

    申请号:EP91114195.0

    申请日:1991-08-23

    Abstract: Apparatus (11 or 41) for allowing low noise and fast frequency switching of a ferri-resonant oscillator, such as YIG, that uses a coil (13, 42) to control output signal frequency by current level. The apparatus positions an active filter (27) in parallel with the oscillator coil (13, 42), which can be set to one of two impedance levels. A low impedance level provides low pass filtering of the current to the oscillator coil for low noise operation. A second high impedance level allows fast settling of transients during frequency changes. Once current levels have stabilized, the active filter (27) can then be switched to low impedance mode without creating a significant transient. This facilitates fast frequency switching.

    Phase-locking circuit for swept synthesized source preferably having
stability enhancement circuit
    28.
    发明授权
    Phase-locking circuit for swept synthesized source preferably having stability enhancement circuit 失效
    用于扫描合成源的锁相电路优选具有稳定性增强电路

    公开(公告)号:US5130670A

    公开(公告)日:1992-07-14

    申请号:US739592

    申请日:1991-08-01

    Inventor: Stanley E. Jaffe

    Abstract: A phase-lock loop for a swept synthesized source in which hysteresis, tuning nonlinearity, and drift over time and temperature of an oscillator incorporated into the swept synthesized source are compensated. The tuning current to the oscillator is initialized to zero to eliminate hysteresis effects. Then, the pretune current is set to produce the minimum operating frequency of the oscillator. Next, the main phase-lock loop is closed, and a low-frequency synthesizer is swept to in turn sweep the oscillator over a selected frequency span. If the selected frequency span extends over other frequency bands, the oscillator is swept to the maximum frequency of the present band and held at this frequency by a track and hold circuit. The main phase-lock loop is opened, the low-frequency synthesizer is re-initialized, the main phase-lock loop is again closed, and the low-frequency synthesizer is swept again. Each frequency band is crossed in a similar manner until the selected frequency span is swept. In order to improve phase-noise and transient response performance of the low-frequency synthesizer, a phase-lock loop speed-up and stability enhancement circuit comprising a zener diode connected across a passive lag-lead network is incorporated. Pretune calibration for the swept synthesized source is also provided.

    Abstract translation: 用于扫描合成源的锁相环,其中补偿了并入到扫描合成源中的振荡器的滞后,调谐非线性以及随时间和温度的漂移。 振荡器的调谐电流初始化为零以消除滞后效应。 然后,预调电流被设置为产生振荡器的最小工作频率。 接下来,主锁相环闭合,并且将低频合成器扫过,从而在选定的频率跨度上扫描振荡器。 如果所选择的频率跨度超过其他频带,则将振荡器扫描到当前频带的最大频率,并通过跟踪和保持电路保持在该频率。 主锁相环打开,低频合成器重新初始化,主相锁闭环再次闭合,低频合成器再次扫频。 每个频带以相似的方式交叉,直到选定的频率跨度被扫描为止。 为了提高低频合成器的相位噪声和瞬态响应性能,包括一个锁相环加速和稳定性增强电路,其包括连接在被动滞后引线网络上的齐纳二极管。 还提供了扫描合成源的预调整校准。

    Single-mode tunable oscillator using magnetostatic waves
    30.
    发明授权
    Single-mode tunable oscillator using magnetostatic waves 失效
    使用静磁波的单模可调谐振荡器

    公开(公告)号:US4291283A

    公开(公告)日:1981-09-22

    申请号:US34183

    申请日:1979-04-27

    Inventor: Jean P. Castera

    CPC classification number: H03B5/1882 H03B2201/0241 H03B2202/017 H03B2202/05

    Abstract: An oscillator including two magnetostatic wave delay lines of different lengths formed on the surface of a magnetic material, one of whose ends is common and made by a first microstrip coupler, each of the other ends being made of a second and a third microstrip couplers respectively. The two lines are looped by means of a single amplifier. By selecting the two lengths, it is possible to obtain the desired interval between modes in such a way that there is a single oscillation mode comprised in the pass-band of the strips, in a pre-determined tuning band. This oscillator operates in the microwave range.

    Abstract translation: 一种振荡器,包括两个不同长度的静磁波延迟线,形成在磁性材料的表面上,其一端是共同的,由第一微带耦合器制成,其另一端分别由第二和第三微带耦合器 。 两条线路通过单个放大器进行环路。 通过选择两个长度,可以以预定的调谐带中的条带的通带中包含单个振荡模式的方式获得模式之间的期望间隔。 该振荡器在微波范围内工作。

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