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    • 3. 发明授权
    • Tuning techniques for I/Q channel signals in microwave digital
transmission systems
    • 微波数字传输系统中I / Q通道信号的调谐技术
    • US5371481A
    • 1994-12-06
    • US36631
    • 1993-03-24
    • Erkki TiittanenHeikki MattilaTapio RautavaJorma MateroKjell OstmanMikko Halttunen
    • Erkki TiittanenHeikki MattilaTapio RautavaJorma MateroKjell OstmanMikko Halttunen
    • H03C3/40H04B1/04H04L27/20H04L27/36
    • H04L27/364H03C3/406H04B1/0475H04L27/2071
    • Structure and technique, for calibrating a vector modulator that does not require a network analyzer, are disclosed which are incorporated in a vector modulation system comprising a standard vector modulator circuit including means for shifting phase to adjust the relative phases of the I and Q components of the modulated RF carrier. Means for attenuating are included in the I and Q modulation system to adjust the relative amplitude of the modulation signals. The disclosure describes a technique wherein the microwave transmitter's I and Q phase difference is measured by measuring the power levels of the I and the Q signals. The power levels are compared and a correction value is stored in a read-only memory to compensate for the error. More particularly, the error compensation is achieved by first determining amplitude error or unbalance by I and Q signal power measurement and an amplitude compensation signal is stored, then a power measurement is carried out for phase compensation and a phase compensation signal is stored.
    • 公开了用于校准不需要网络分析器的矢量调制器的结构和技术,其被并入矢量调制系统中,该矢量调制系统包括标准矢量调制器电路,该标准矢量调制器电路包括用于转换相位的装置,以调整I和Q分量的相对相位 调制RF载波。 在I和Q调制系统中包括用于衰减的装置,以调整调制信号的相对幅度。 本公开描述了一种技术,其中通过测量I和Q信号的功率电平来测量微波发射器的I和Q相位差。 功率电平进行比较,校正值存储在只读存储器中以补偿误差。 更具体地,通过首先通过I和Q信号功率测量来确定振幅误差或不平衡来实现误差补偿,并且存储幅度补偿信号,然后对相位补偿进行功率测量并存储相位补偿信号。
    • 4. 发明授权
    • Telephone holder
    • 电话机
    • US5708707A
    • 1998-01-13
    • US588001
    • 1996-01-17
    • Mikko HalttunenPaul Sofield
    • Mikko HalttunenPaul Sofield
    • B60R11/00B60R11/02H02J7/00H04M1/00
    • B60R11/0241H02J7/0042H02J7/0044B60R2011/0071B60R2011/0078
    • A telephone holder according to the present invention includes a carrier (101) and a body (102), which are able to move vertically in relation to each other between two extreme positions. In the first extreme position an electrical connector of the telephone (111) is galvanically connected to a counterpart (109) of the connector in the holder. In the second extreme position the connector is disconnected from the counterpart. The carrier is joined to the body by means of slide surfaces (103, 104), which permit the carrier to move back and forth vertically in relation to the body between said extreme positions. The movement and its extent are governed by springs (106), for example. The holder according to the present invention can be accurately formed according to the contours of the telephone (111), preventing the telephone from moving laterally while in the holder, facilitating alignment of the connector with the counterpart (109).
    • 根据本发明的电话机包括载体(101)和主体(102),其能够在两个极限位置之间相对于彼此垂直地移动。 在第一极限位置,电话(111)的电连接器电流连接到保持器中的连接器的对应物(109)。 在第二极端位置,连接器与对方断开连接。 载体通过滑动表面(103,104)连接到主体,其允许载体在所述极限位置之间相对于身体垂直移动。 运动及其程度例如由弹簧(106)控制。 根据本发明的保持器可以根据电话(111)的轮廓精确地形成,防止电话在保持器中横向移动,从而有助于连接器与对方(109)的对准。
    • 6. 发明授权
    • Earthed intermediate frame for circuit boards
    • 接地电路板中间框架
    • US5253146A
    • 1993-10-12
    • US804226
    • 1991-12-05
    • Mikko HalttunenPetteri Vanhanen
    • Mikko HalttunenPetteri Vanhanen
    • H05K1/14H05K9/00
    • H05K1/144H05K9/0022
    • An earthed intermediate frame (2) fitted between circuit boards (1) is provided with through apertures (8) for connectors (4) connecting the circuit boards (1), and grooves (6) are provided in register with the signal runs (5) on the surface of the circuit board (1), located on the surface of the intermediate frame (2) placed against the surface of the circuit board. The intermediate frame made of a metal or the surfaces of the apertures (8) surrounding the connectors (4) connecting the circuit boards (1) and of the grooves (6) covering the signal runs (5) of the circuit board (1) have been coated with an earthed metal folio (7).
    • 安装在电路板(1)之间的接地中间框架(2)设置有用于连接电路板(1)的连接器(4)的通孔(8),并且沟槽(6)设置成与信号线(5 )位于电路板(1)的位于中间框架(2)的表面上的位于电路板表面上的表面上。 由金属构成的中间框架或围绕连接电路板(1)和覆盖电路板(1)的信号线(5)的槽(6)的连接器(4)的孔(8)的表面, 已经涂覆了一个接地的金属对开(7)。