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    Tunable, distributed voltage-controlled oscillator
    2.
    发明授权
    Tunable, distributed voltage-controlled oscillator 有权
    可调谐分布式压控振荡器

    公开(公告)号：US06853260B1

    公开(公告)日：2005-02-08

    申请号：US10246998

    申请日：2002-09-19

    申请人： Seyed-Ali Hajimiri ,  Hui Wu

    发明人： Seyed-Ali Hajimiri ,  Hui Wu

    IPC分类号： H03B5/18

    CPC分类号： H03B5/1852 ,  H03B5/26

    摘要： A voltage controlled oscillator is provided. The voltage controlled oscillator includes a differential transmission line and another transmission line, which can include a second differential transmission line or other suitable transmission lines. An active device connected to the differential transmission line and the other transmission line controls the current flow between the two transmission lines. A tuning circuit connected to the active device, such as a bias voltage, controls an oscillation frequency of a signal on the differential transmission line and the other transmission line, such as by controlling the level of current flow.

    摘要翻译： 提供压控振荡器。 压控振荡器包括差分传输线和另一传输线，其可包括第二差分传输线或其它合适的传输线。 连接到差分传输线和另一传输线的有源设备控制两条传输线之间的电流。 连接到有源器件的调谐电路，例如偏置电压，例如通过控制电流电平来控制差分传输线和另一传输线上的信号的振荡频率。

    Distributed oscillator architectures
    5.
    发明申请
    Distributed oscillator architectures 审中-公开
    分布式振荡器架构

    公开(公告)号：US20050093637A1

    公开(公告)日：2005-05-05

    申请号：US10988681

    申请日：2004-11-15

    申请人： Seyed-Ali Hajimiri ,  Hui Wu

    发明人： Seyed-Ali Hajimiri ,  Hui Wu

    IPC分类号： H03B5/18

    CPC分类号： H03B5/1852 ,  H03B5/1847

    摘要： A voltage controlled oscillator is provided. The voltage controlled oscillator includes a traveling-wave amplifier having two inputs and two outputs, such as would be formed by a first transmission line having a first input and a first output and a second transmission line having a second input and a second output. The first output of the traveling-wave amplifier is connected to the first input. A delay is connected between the second output and the second input, so as to provide a voltage controlled oscillator that requires minimal power to operate.

    摘要翻译： 提供压控振荡器。 压控振荡器包括具有两个输入和两个输出的行波放大器，例如将由具有第一输入和第一输出的第一传输线和具有第二输入和第二输出的第二传输线形成。 行波放大器的第一输出端连接到第一输入端。 延迟连接在第二输出和第二输入之间，以便提供需要最小功率来操作的压控振荡器。

    Tunable, distributed, voltage-controlled oscillator
    6.
    发明授权
    Tunable, distributed, voltage-controlled oscillator 有权

    公开(公告)号：US06529085B2

    公开(公告)日：2003-03-04

    申请号：US10076945

    申请日：2002-02-14

    申请人： Seyed-Ali Hajimiri ,  Hui Wu

    发明人： Seyed-Ali Hajimiri ,  Hui Wu

    IPC分类号： H03B518

    CPC分类号： H03B5/1852 ,  H03B5/26

    摘要： Techniques and structures for tuning integrated, distributed voltage-controlled oscillators (DVCO's) across a wide microwave frequency range are disclosed. One type of DVCO implements a tuning circuit that includes a pair of interconnected amplifying transistors and a current source connected to the transistors, such that a differential voltage input to the circuit adjusts the current to each transistor and effectively adjusts the “electrical length” of one of the transmission lines on which the output frequency is oscillating. This, in turn, adjusts the time delay and thus frequency of the signal propagating on the lines across a wide frequency band. This technique is called “current-steering.” In a preferred embodiment, the tuning circuit is balanced with a complementary tuning circuit to effectively adjust the electrical length of the second transmission line in the oscillator. In another technique that provides for more coarse, but wider range, broadband frequency tuning, the time delay, and thus, frequency, of the DVCO is adjustable by varying the capacitive loading on the transmission lines, by introducing a coupling capacitor between the transmission lines and tuning the intrinsic capacitances of the gain transistors with a dc bias input.