Method for enhancing the reception sensitivity in homodyne recievers
    1.
    发明授权
    Method for enhancing the reception sensitivity in homodyne recievers 失效
    提高接收灵敏度的方法

    公开(公告)号:US5822688A

    公开(公告)日:1998-10-13

    申请号:US683760

    申请日:1996-07-17

    CPC classification number: H04B1/30 H03D1/2245 H03D7/165

    Abstract: In a homodyne receiver for the reception of a carrier frequency signal modulated with a low-frequency signal, the sensitivity of the detection of the low-frequency signal is enhanced by two auxiliary modulations before the conversion into the base band. The auxiliary signal utilized for an auxiliary modulation of the local oscillator signal and the supplemental signal employed for an auxiliary modulation of the carrier frequency signal comprise frequencies that can be technologically governed and with economic outlay and enable the simple decoupling of the low-frequency signal from the supplemental signal and, thus, an enhancement of the sensitivity of the homodyne receiver. The decoupling is particularly achieved by a band-pass filtering after the conversion of the carrier frequency signal into the base band, this band-pass filtering being tuned to a specific frequency relationship of the auxiliary signal and the supplemental signal. An advantage of the homodyne receiver is of particular economic significance for employment in mass-produced articles, such as in mobile and wireless communication systems.

    Abstract translation: 在用于接收利用低频信号调制的载波频率信号的零差接收机中,通过在转换到基带之前的两个辅助调制来增强低频信号的检测灵敏度。 用于本地振荡器信号的辅助调制的辅助信号和用于载波频率信号的辅助调制的补充信号包括可以由技术管理并具有经济支出的频率,并且使得能够简单地将低频信号从 补充信号,从而提高零差接收机的灵敏度。 通过在将载波频率信号转换为基带之后的带通滤波特别地实现解耦,该带通滤波被调谐到辅助信号和补充信号的特定频率关系。 零星接收机的优点对于在大规模生产的物品(例如移动和无线通信系统)中的使用具有特别的经济意义。

    Multistage single-sideband shifter
    2.
    发明授权
    Multistage single-sideband shifter 失效
    多功能单边带切换器

    公开(公告)号:US5142220A

    公开(公告)日:1992-08-25

    申请号:US369809

    申请日:1989-06-22

    CPC classification number: H03D7/00

    Abstract: A multistage single-sideband shifter composed of N switchable phase shifters connected in cascade, where N is a positive integer greater than 1, each phase shifter being constructed to produce a switchable phase shift and a control unit connected to the phase shifters for switching the phase shifters chronologically successively in a selected sequence into all possible 2.sup.N combinations, for periodically repeating the selected sequence, and for chronologically reversing the selected sequence.

    Abstract translation: 由级联连接的N个可切换移相器组成的多级单边带移位器,其中N是大于1的正整数,每个移相器被构造为产生可切换相移,以及连接到移相器的控制单元,用于切换相位 时间顺序地以所选序列顺序移位到所有可能的2N组合中,用于周期性地重复所选择的序列,并且按时间顺序反转所选择的序列。

    Method for reducing spurious reception locations in homodyne receivers
with time-variant carrier frequency
    3.
    发明授权
    Method for reducing spurious reception locations in homodyne receivers with time-variant carrier frequency 失效
    用于减少带有时变载波频率的零差接收机中的杂散接收位置的方法

    公开(公告)号:US5715530A

    公开(公告)日:1998-02-03

    申请号:US683759

    申请日:1996-07-17

    CPC classification number: H03D1/2245 H03D7/165 H04B1/30

    Abstract: In a homodyne receiver for the reception of a carrier frequency signal with time-variant carrier frequency, an auxiliary signal is modulated onto the local oscillator signal selected corresponding to the current carrier frequency. A better separation of the local oscillator signals is thereby achieved by a band-pass filtering after the conversion of the carrier frequency signal into the base band. Compared to a homodyne receiver with time-variant carrier frequency but without auxiliary modulation, the RF switch for the selection of the local oscillator signal corresponding to the current carrier frequency can be realized simple and more economical. This advantage of the homodyne receiver is of particular economic significance for employment in mass-produced articles, such as in mobile and wireless communication systems.

    Abstract translation: 在用于接收具有时变载波频率的载波频率信号的零差接收机中,辅助信号被调制到对应于当前载波频率选择的本地振荡器信号上。 因此,通过在将载波频率信号转换为基带之后的带通滤波器来实现本地振荡器信号的更好的分离。 与具有时变载波频率但没有辅助调制的零差接收机相比,用于选择对应于当前载波频率的本地振荡器信号的RF开关可以简单且更经济。 零差接收机的这个优点对于在大规模生产的物品(例如移动和无线通信系统)中的使用具有特别的经济意义。

    Method for merging data streams
    4.
    发明授权
    Method for merging data streams 失效
    合并数据流的方法

    公开(公告)号:US5539749A

    公开(公告)日:1996-07-23

    申请号:US277574

    申请日:1994-07-20

    CPC classification number: H03M13/3723 H03M13/45 H04L1/02 H04B7/022

    Abstract: A method for merging data streams generated by a plurality of base stations in a cellular mobile radio telephone network upon receipt by each base station of a mobile unit signal transmitted by a mobile unit, wherein each base station routes the mobile unit signal in the form of a stream of data in blocks of data bits, each bit in each block having associated therewith a reliability value generated by its respective base station, the various streams of data generated by the base stations are received at a unification point, and a unified signal is generated out of the various base station streams of data in the form of a composite data stream by selecting each bit thereof from corresponding bits in the various base station streams of data.

    Abstract translation: 一种用于在由移动单元发送的移动单元信号由每个基站接收到的情况下,合并由蜂窝移动无线电话网络中的多个基站生成的数据流的方法,其中,每个基站将移动单元信号以 在数据位块中的数据流,每个块中的每个位与其相关基站产生的可靠性值相关联,由基站产生的各种数据流在统一点被接收,统一信号是 通过从各种基站数据流中的相应位选择每个位,从合成数据流形式的各种基站数据流中产生。

    Method for optimizing the automatic amplifier setting in radio receivers
    5.
    发明授权
    Method for optimizing the automatic amplifier setting in radio receivers 失效
    用于优化无线电接收机中的自动放大器设置的方法

    公开(公告)号:US5564080A

    公开(公告)日:1996-10-08

    申请号:US265444

    申请日:1994-06-24

    CPC classification number: H04W52/223 H03G3/3036 H04W52/52

    Abstract: In a method for optimizing the automatic amplifier setting in radio receivers in which information available in a radio station is utilized in a new manner. A prediction about the behavior of the reception power is to be undertaken in the reception station. To this end, the transmission power control of one station and of the variations to be anticipated as a result thereof are involved in the prediction of the anticipated reception power of the other station. This ensues in such a way that a prediction based on knowledge of the transmission power control data is supplied to the automatic gain control (AGC) of the receiver.

    Abstract translation: 一种用于优化无线电接收机中的自动放大器设置的方法,其中以新的方式利用无线电台中可用的信息。 关于接收功率的行为的预测将在接收台进行。 为此,一个站的发射功率控制和作为其结果的预期变化参与预测其它站的预期接收功率。 这样做使得基于对发射功率控制数据的知识的预测被提供给接收机的自动增益控制(AGC)。

    Method of calibrating a network analyzer
    6.
    发明授权
    Method of calibrating a network analyzer 失效
    校准网络分析仪的方法

    公开(公告)号:US5313166A

    公开(公告)日:1994-05-17

    申请号:US774604

    申请日:1991-10-10

    CPC classification number: G01R35/005

    Abstract: In a method of calibrating a network analyzer, in which calibration measurements are performed in succession in a random sequence on several different calibration standards which are linked to the two test ports, the first calibration standard used is a two-port unit which is linked between the two test ports and of which all complex scattering parameters are known, and the further calibration standards used are three one-port units of random, though different, reflection characteristics which are successively linked to one of the two test ports, or are linked in any desired combination to both test ports.

    Abstract translation: 在校准网络分析仪的方法中,其中校准测量在连接到两个测试端口的若干不同校准标准上的随机序列中连续执行,所使用的第一校准标准是两端口单元,其连接在 两个测试端口,其中所有复杂的散射参数都是已知的,并且所使用的另外的校准标准是三个单端口单元,其随机的,尽管不同的反射特性被连续地连接到两个测试端口之一, 任何期望的组合到两个测试端口。

    Methods for establishing the complex measuring capacity of homodyne
network analyzers
    7.
    发明授权
    Methods for establishing the complex measuring capacity of homodyne network analyzers 失效
    建立HOMODYNE网络分析仪的复杂测量能力的方法

    公开(公告)号:US5097215A

    公开(公告)日:1992-03-17

    申请号:US506131

    申请日:1990-04-09

    CPC classification number: G01R27/28

    Abstract: Methods for establishing the complex measuring capability of homodyne operating network analyzers. Single port as well as two-port measuring devices are treated in which the signal detection takes place by means of a linear mixing process. It is possible to overcome the disadvantage of the homodyne detection process, which does not directly supply information relating to the amplitude and phase of the measurement signal, by measuring arbitrary unknown standards. The required number of different unknown standards depends, among other things, on the complexity of the measuring device used. One of the proposed methods operates without any standards at all. After weighting factors have been determined, complex measuring values can be ascertained and one can then proceed as in the case of a heterodyne network analyzer, i.e. with system error calibration measurements and finally with DUT (device under test) measurements.

    Abstract translation: 建立零差分运算网络分析仪复杂测量能力的方法。 处理单端口以及双端口测量设备,通过线性混合过程进行信号检测。 可以通过测量任意的未知标准来克服零差检测处理的缺点,其不直接提供与测量信号的幅度和相位有关的信息。 所需数量不同的未知标准取决于所使用的测量装置的复杂性。 所提出的方法之一完全没有任何标准。 在已经确定加权因子之后,可以确定复杂的测量值,然后可以像外差网络分析仪那样进行测量,即进行系统误差校准测量,最后使用DUT(待测器件)进行测量。

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