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    MILLIMETER WAVE TRANSMITTER USING OPTRICAL HETERODYNING
    61.
    发明公开
    MILLIMETER WAVE TRANSMITTER USING OPTRICAL HETERODYNING 有权
    毫米波发射器使用光混频器和方法

    公开(公告)号：EP1516428A1

    公开(公告)日：2005-03-23

    申请号：EP02772802.1

    申请日：2002-06-21

    申请人： TELECOM ITALIA S.p.A.

    发明人： DONATI, Silvano ,  TAMBOSSO, Tiziana

    IPC分类号： H03C7/02

    CPC分类号： H03C7/025

    摘要： The present invention relates to an integrated device for transmitting and/or receiving information by means of millimetric waves (wavelength 1 mm-10 mm), i.e. electromagnetic waves corresponding to frequencies of 30 to 300 GHz. In particular, the present invention relates to a device constituted by an optoelectronic integrated circuit that interfaces with an antenna able to transmit and/or receive millimetre wave signals. In turn the device, associated to the appropriate biasing and control electronics, constitutes a transceiver module to be used in a wireless or mobile radio local area network. rhe transmitter circuit is constituted by a laser in passive mode-locking. The optical signal thus generated is amplified, modulated and converted into radio frequency signal through a guide photodiode, to be lastly transmitted through an antenna. The receiver circuit is constituted by an antenna, a photodiode and a laser identical to that of the transmitter. The photodiode, by means of appropriate bias, performs a dual function of optical and electrical mixer. In particular, the first function converts to electrical frequency the optical beat signal between two modes generated by the laser, the second function takes place by means of the non linear voltage/current characteristic of the photodiode and allows to bring back to base band the received signal, thereby allowing to extract the modulating signal from the weak signal received through the antenna.

    CIRCUIT DE MODULATION NUMERIQUE DE PHASE ET AMPLITUDE, ET PROCEDE
    62.
    发明授权
    CIRCUIT DE MODULATION NUMERIQUE DE PHASE ET AMPLITUDE, ET PROCEDE 有权
    数字相位和振幅调制器，和程序

    公开(公告)号：EP1316142B1

    公开(公告)日：2004-04-07

    申请号：EP01984282.2

    申请日：2001-07-09

    申请人： CENTRE NATIONAL D'ETUDES SPATIALES

    发明人： SADOWY, Jérôme ,  BOULANGER, Cyrille ,  LALAURIE, Jean-Claude ,  LAPIERRE, Luc

    IPC分类号： H03C7/02

    CPC分类号： H03C7/025 ,  H04L27/362

    摘要： The invention concerns a method and a circuit for modulating a carrier signal (Se) with a signal (SCj) comprising at least a modulation cell (CMi) by phase shift for receiving two digital control signals (Scji, SCji2) representing at least part of the digital modulation signal (SCj). For at least a value of the digital modulation signal (SCj), the method consists in applying on at least a common modulation cell (CMi), two digital control signals (SCji1, SCji2) of identical value, said modulation cell (CMi) delivering a signal, called modulated elementary signal (Ssi), which is null for said digital modulation signal value (SCj).

    Balanced modulator
    65.
    发明公开
    Balanced modulator 失效
    Gegentaktmodulator

    公开(公告)号：EP0817368A1

    公开(公告)日：1998-01-07

    申请号：EP97110295.9

    申请日：1997-06-24

    申请人： NEC CORPORATION

    发明人： Nishida, Masakazu

    IPC分类号： H03C7/02

    CPC分类号： H03C7/027

    摘要： A balanced modulator has a pair of diodes, a plurality of line patterns including a balance-to-unbalance converter, the line patterns including lines extending toward and connected to the diodes, respectively, and at least a set of capacitive stubs disposed near the lines and spaced from each other by a distance of λ/8 (λ is the wavelength at a frequency used). The capacitive stubs are connectable to the lines by bonding wires for isolation adjustments.

    摘要翻译： 平衡调制器具有一对二极管，多个线路图案，包括平衡不平衡转换器，线路图案包括分别向二极管延伸并连接到二极管的线路，以及设置在线路附近的至少一组电容短截线 并且彼此隔开λ/ 8的距离（λ是所用频率的波长）。 电容性短截线可通过接合线连接到线路进行隔离调整。

    Balanced phase modulator used in microwave band
    67.
    发明公开
    Balanced phase modulator used in microwave band 失效
    平衡相位调制器用于微波频段

    公开(公告)号：EP0645916A3

    公开(公告)日：1995-09-13

    申请号：EP94115048.4

    申请日：1994-09-23

    申请人： NEC CORPORATION

    发明人： Nishida, Masakazu, c/o NEC Corporation ,  Ohmagari, Shinichi, c/o NEC Corporation ,  Yamamoto, Osamu, c/o NEC Corporation

    IPC分类号： H04L27/20 ,  H03C7/02

    CPC分类号： H03C7/027

    摘要： A phase modulator for microwave band having a desirable modulation characteristic by maintaining the impedance thereof constant, comprising two PIN diodes (2) and (3) connected to a merchant balun (1) and a bias circuit (18) which supplies bias voltages to the PIN diodes (2) and (3) such that the sum of the bias voltages applied to the diodes (2)and (3) to be constant. The bias voltages are selected so as to have the input and output impedances to be in the most stable state when a modulation signal is equal to zero.

    摘要翻译： 一种通过保持其阻抗恒定而具有所需调制特性的微波频带相位调制器，包括连接到商用平衡 - 不平衡变换器（1）的两个PIN二极管（2）和（3），以及偏置电路（18） PIN二极管（2）和（3）使得施加到二极管（2）和（3）的偏置电压的总和恒定。 选择偏置电压以使得当调制信号等于零时输入和输出阻抗处于最稳定状态。

    Vorrichtung zum Aussenden eines intensitätsmodulierten Lichtstrahls
    68.
    发明公开
    Vorrichtung zum Aussenden eines intensitätsmodulierten Lichtstrahls 失效
    Vorrichtung zum Aussenden einesintensitätsmoduliertenLichtstrahls。

    公开(公告)号：EP0649228A1

    公开(公告)日：1995-04-19

    申请号：EP94116114.3

    申请日：1994-10-12

    申请人： ASCOM TECH AG

    发明人： Azizi, Ataollah Dr.

    IPC分类号： H04B10/155 ,  H03C7/02

    CPC分类号： H04B10/504 ,  H03C7/027

    摘要： Die Vorrichtung besteht aus einem Modulator (20), der einen Sender (10) zum Aussenden eines Lichtstrahls ansteuert. Der Modulator (20) umfasst eine Mikrowellen-Verzögerungsleitung (25) welche segmentweise durch Varactor-Dioden (27) belastet ist. Dieser Leitung ist ein Hochpassfilter (28) nachgeschaltet und ein Vorverzerrer (30) vorgeschaltet. Der Vorverzerrer arbeitet in Analogtechnik und gleicht die Verzerrung durch die Verzögerungsleitung (25) gerade aus. Hierdurch ergibt sich ein linearer Zusammenhang zwischen der Amplitude des Nutzsignals (NS), das über den einen Eingang (21) eingegeben wird, und der Phase des Hilfsträgersignals (TF), welches über den anderen Eingang (22) eingegeben wird. Das phasenmodulierte Signal ist am Ausgang (23) abgreifbar und dient zum Ansteuern des Senders (10).

    摘要翻译： 该装置包括控制发射机（10）发射光束的调制器（20）。 调制器（20）包括微波延迟线（25），其由变容二极管（27）加载到段中。 高通滤波器（28）连接在下游，预加重器（30）连接在该线路的上游。 预加重器使用模拟技术进行操作，并精确补偿由延迟线引起的失真（25）。 这产生经由一个输入（21）引入的有用信号（NS）的幅度与经由另一输入端（22）引入的辅助载波信号（TF）的相位之间的线性关系。 相位调制信号可以在输出端（23）处被抽头，并用于控制发射器（10）。