公开(公告)号：EP4457928A1

公开(公告)日：2024-11-06

申请号：EP22838829.4

申请日：2022-12-20

申请人： International Business Machines Corporation

发明人： MANCINI, Corrado ,  ABDO, Baleegh

IPC分类号： H03D7/00

公开(公告)号：EP4297354A1

公开(公告)日：2023-12-27

申请号：EP22180923.9

申请日：2022-06-24

申请人： Kapsch TrafficCom AG

发明人： SCHIDL, Stefan ,  KRAPFENBAUER, Markus

IPC分类号： H04L27/00 ,  H03D3/00 ,  H03D7/00

摘要： The present invention relates to a method for calibrating a single sideband, SSB, receiver (1), the method (M) comprising:
a) adjusting a mutual phase shift (ΔΘ) of I- and Q-signals (I, Q) to a first phase shift value (ΔΘ 1 );
b) feeding a first, a second and a third test signal (S 1 , S 2 , S 3 ) having a predetermined phase offset (ΔΦ) to an input (2) to obtain respective SSB signals (R 1 , R 2 , R 3 ), and measuring a first and a second phase difference (Δϕ 12 , Δϕ 23 ) therefrom;
c) calculating a first phase error (E ϕ,1 ) on the basis of the first and second phase differences (Δϕ 12 , Δϕ 23 );
d) repeating steps a) - c) with a second phase shift value (ΔΘ 2 ) to obtain a second phase error (E ϕ,2 ); and
e) calibrating the SSB receiver (1) by using that one of the first and second phase shift values (ΔΘ 1 , ΔΘ 2 ) that has yielded the smaller one of the first and second phase errors (E ϕ,1 , E ϕ,2 ).

公开(公告)号：EP4154624A1

公开(公告)日：2023-03-29

申请号：EP21715781.7

申请日：2021-03-18

申请人： Forschungszentrum Jülich GmbH

发明人： GREWING, Christian ,  VAN WAASEN, Stefan ,  ROBENS, Markus ,  ZAMBANINI, André ,  LIEBAU, Daniel

IPC分类号： H04W64/00 ,  G01S5/02 ,  H04L7/00 ,  H03D7/00

公开(公告)号：EP3917006A1

公开(公告)日：2021-12-01

申请号：EP20770366.1

申请日：2020-03-05

申请人： MITSUBISHI ELECTRIC CORPORATION

发明人： YOKOMIZO, Shinya ,  FUJIWARA, Takanobu ,  TSURU, Masaomi ,  SHIMOZAWA, Mitsuhiro ,  HIRAI, Akihito

IPC分类号： H03D7/00 ,  H03D7/14 ,  H04B1/04

摘要： A mixer includes a first unit mixer, a second unit mixer, a third unit mixer, and a fourth unit mixer that have the same configuration and a first combiner, a second combiner, and a third combiner that have the same configuration. The first to the fourth unit mixers each include a differential RF signal terminal. Output of the first unit mixer and output of the second unit mixer are combined by the second combiner. Output of the third unit mixer and output of the fourth unit mixer are combined by the third combiner. Output of the second combiner and output of the third combiner are combined by the first combiner. The output of the third unit mixer is input to the third combiner with the polarity being determined.

公开(公告)号：EP3910789A1

公开(公告)日：2021-11-17

申请号：EP20179364.3

申请日：2020-06-10

申请人： Airbus Defence and Space Limited

发明人： Balakier, Katarzyna ,  Fernandez Laguna, Victor Manuel ,  MacManus, Niall Andrew ,  Brown, Stephen Phillip

IPC分类号： H03D7/00 ,  H04B7/185

摘要： Embodiments of the present invention comprise a signal processing method and apparatus for use in a satellite payload in which an input RF signal received at a receiver antenna is modulated by using a single optical carrier at the input of an optical modulator. The optical domain signal is processed and is subsequently combined with a single unmodulated optical LO tone to provide an output RF signal for radiation by a transmitter antenna or for further digital processing by an on-board processor. This results in a clean generation of the frequency-converted RF signal at the output of the opto-electrical conversion stage.

公开(公告)号：EP2947767B1

公开(公告)日：2020-09-02

申请号：EP15001518.8

申请日：2015-05-20

申请人： Linear Technology Corporation

发明人： Wang, Xudong ,  Beckwith, William B. ,  Schiltz, Thomas E.

IPC分类号： H03H11/32 ,  H03D7/00 ,  H01P5/10 ,  H03H7/42

公开(公告)号：EP3613141A1

公开(公告)日：2020-02-26

申请号：EP17807874.7

申请日：2017-12-01

申请人： International Business Machines Corporation

发明人： ABDO, Baleegh

IPC分类号： H03D7/00

公开(公告)号：EP3373482A1

公开(公告)日：2018-09-12

申请号：EP18160470.3

申请日：2018-03-07

申请人： Harris Corporation

发明人： Desalvo, John R. ,  Logan, Catheryn D. ,  Middleton, Charles F. ,  Grafer, Elliott J.

IPC分类号： H04B10/2575 ,  H03D7/00 ,  H04B10/2587

摘要： A communications device may include a local device, a remote device, and a multi-mode optical fiber coupled between the local device and the remote device. The local device may include a local spatial optical mux/demux coupled to the multi-mode optical fiber and having first and second local optical outputs and first and second local optical inputs, and a local electro-optic E/O modulator coupled to the second local optical input. The remote device may include a remote spatial optical mux/demux coupled to the multi-mode optical fiber, and a remote E/O modulator configured to generate a modulated signal onto a first remote optical output based upon modulating the first optical carrier signal from a first remote optical input responsive to a radio frequency (RF) electrical input signal.

公开(公告)号：EP3249807A1

公开(公告)日：2017-11-29

申请号：EP16755691.9

申请日：2016-02-26

申请人： Tokyo Metropolitan Industrial Technology Research Institute

发明人： FUJIWARA Kohei ,  KOBAYASHI Takeshi

IPC分类号： H03D7/00 ,  G01R23/14

CPC分类号： G01R23/14 ,  H03D7/00

摘要： A frequency converter receives a predetermined input signal and a predetermined local oscillation signal, and outputs a signal obtained by mixing the input signal with a harmonic signal having a frequency n times the frequency of the local oscillation signal, wherein a circuit which mixes the input signal with the harmonic signal is a harmonic mixer (11) which mixes the harmonic signal with the input signal using a nonlinear characteristic of a semiconductor element, and wherein the input signal or the output signal is subjected, either before input to the frequency converter or after output from the frequency converter, to correction on the basis of the amplitude and phase frequency characteristics of the frequency converter, which have been determined in advance.

摘要翻译： 频率转换器接收到预定的输入信号和预定的本地振荡信号，并且输出通过将输入信号与谐波信号混合具有一个频率的n倍的本地振荡信号的频率而获得的信号，其特征在于，混合所述输入信号的电路 谐波信号是使用半导体元件的非线性特性将谐波信号与输入信号混合的谐波混合器（11），并且其中输入信号或输出信号在输入到变频器之前或之后 从变频器输出到基于预先确定的变频器的幅度和相位频率特性的校正。

公开(公告)号：EP3175550A1

公开(公告)日：2017-06-07

申请号：EP15762490.9

申请日：2015-07-30

申请人： Thales

发明人： JOLEC, François ,  DOUMENJOU, Anthony

IPC分类号： H03D3/00 ,  H03D7/00 ,  H03H17/02 ,  H03H17/06

CPC分类号： H03D7/165 ,  H03D2200/0062 ,  H03H17/0276 ,  H03H17/0664 ,  H03H2017/0247

摘要： Digital frequency converter and method of processing in a digital frequency converter Frequency converter comprising a block for frequency transposition of samples (11
Q_1 , 11
Q_3 ), a filtering block (12
Q_1 , 12
Q 3 ), the filtered samples y(n) satisfying y(n) =c(0).x(n) + c(1).x(n-1) + c(2).x(n-2)+...+c(p-1).x(n-p+1) + c(p).x(n-p) + c(p-1).x(n-p-1)+...+...+c(1).x(n-2.p+1) + c(0).x(n-2.p), where x() are the transposed samples and c(0),...c(p) are the real coefficients of the filter; and being adapted so as to, during a cycle of determination of the value of the filtered sample y(n): - calculate first terms c(0).x(n), c(1).x(n-1), c(2).x(n-2),..., c(p).x(n-p) by multiplying the coefficients and respective transposed samples, and storing said first calculated terms; - read second terms c(p-1).x(n-p-1),..., c(1).x(n-2.p+1), c(0).x(n-2.p), calculated and stored during previous cycles of determination of the value of filtered samples y(n-m); and - determine y(n) by summing the first and second terms.

摘要翻译： 数字频率转换器和数字频率转换器中的处理方法一种变频器，包括用于样本频率转置的模块（11Q_1,11Q_3），滤波模块（12Q_1,12Q 3），满足y（n）的滤波样本y（n） （1）.x（n-1）+ c（2）.x（n-2）+ ... + c（p-1）.x（n- （p-1）+ c（p）.x（np）+ c（p-1）.x（np-1）+ ... + ... + c（1）.x（n-2.p + 1）+ c（0）.x（n-2.p），其中x（）是转置样本，c（0），... c（p）是滤波器的实系数。 （n）的值的确定周期期间： - 计算第一项c（0）.x（n），c（1）.x（n-1）， c（2）.x（n-2），...，c（p）.x（np），并存储所述第一计算项; - 读取第二项c（p-1）.x（np-1），...，c（1）.x（n-2.p + 1），c（0）.x（n-2.p ），在过滤样本y（nm）的值的确定的先前周期期间被计算和存储; 和 - 通过将第一和第二项相加来确定y（n）。