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1. 发明授权

US06704562B1 N-port receiver with RF/LO isolation 失效
标题翻译：具有RF / LO隔离的N端口接收器
公开(公告)号：US06704562B1
公开(公告)日：2004-03-09
申请号：US09593676
申请日：2000-06-14
申请人： Gerald Oberschmidt , Veselin Brankovic , Dragan Krupezevic , Masayoshi Abe , Thomas Dölle , Tino Konschak
发明人： Gerald Oberschmidt , Veselin Brankovic , Dragan Krupezevic , Masayoshi Abe , Thomas Dölle , Tino Konschak
IPC分类号： H04B106
CPC分类号： H03D3/00
摘要： A RF receiver for modulated RF signals based on a N-port junction (1) providing LO/RF isolation is proposed. N thereby is an integer larger than two, such that the N-port junction (1) can be preferably a three port, four port, five port and six port junction. The N-port junction (1) supplied with a first RF signal at a first input (2) and with a second RF signal originating from a local oscillator (2) at a second input (3). An isolation block (13) comprising an active circuitry (22) is comprised in the N-port junction for isolating the second input (3) from the first input (1). Thereby can be ensured that the LO signals are significantly attenuated at the RF port (2).
摘要翻译：提出了一种基于提供LO / RF隔离的N端口结（1）的调制RF信号的RF接收器。 N因此是大于2的整数，使得N端口结（1）可以优选为三端口，四端口，五端口和六端口结。 N端口结（1）在第一输入（2）处提供有第一RF信号，并在第二输入（3）处提供源自本地振荡器（2）的第二RF信号。包括有源电路（22）的隔离块（13）包括在N端口结中，用于将第二输入（3）与第一输入（1）隔离。从而可以确保LO信号在RF端口（2）处被显着衰减。

2. 发明授权

US06724246B2 Demodulation structure and method 失效
标题翻译：解调结构与方法
公开(公告)号：US06724246B2
公开(公告)日：2004-04-20
申请号：US09767124
申请日：2001-01-22
申请人： Gerald Oberschmidt , Veselin Brankovic , Dragan Krupezevic , Tino Konschak , Thomas Dölle
发明人： Gerald Oberschmidt , Veselin Brankovic , Dragan Krupezevic , Tino Konschak , Thomas Dölle
IPC分类号： H03D700
CPC分类号： H03D3/009
摘要： The present invention relates to a demodulation structure and method for downconverting and demodulating a digitally modulated signal So, with a local oscillator means (1; 5; 8) for providing a local oscillator signal Slo a mixer means (2) for mixing said local oscillator signal Slo and said digitally modulated signal S0 in order to obtain a mixed signal, a lowpass filter means (3) for lowpass filtering the mixed signal from the mixer means (2) and an analog-to-digital converting means (4) for converting the filtered signal from the lowpass filter means (3) into a downconverted and demodulated digital signal Sl, whereby the local oscillator signal is set in respect to the modulated digital signal so that the downconverted and demodulated digital signal output from the analog-to-digital converting means comprises to serially arranged information parts. The present demodulation structure provides a very simple structure with improved amplitude and phase imbalances.
摘要翻译：本发明涉及一种用于通过本地振荡器装置（1; 5; 8）对数字调制信号So进行下变频和解调的解调结构和方法，该本地振荡器装置用于提供本地振荡器信号Slo，混频器装置（2）用于混合所述本地振荡器信号Slo和所述数字调制信号S0以获得混合信号;低通滤波器装置（3），用于对来自混频器装置（2）的混合信号进行低通滤波;以及模数转换装置（4），用于转换从低通滤波器装置（3）滤波的信号变为下变频和解调的数字信号S1，由此相对于调制的数字信号设置本地振荡器信号，使得从模数转换器输出的下变频和解调的数字信号转换装置包括串行排列的信息部分。本解调结构提供了具有改善的幅度和相位不平衡的非常简单的结构。

3. 发明授权

US06650178B1 N-port direct receiver 失效
标题翻译： N端口直接接收机
公开(公告)号：US06650178B1
公开(公告)日：2003-11-18
申请号：US09367520
申请日：1999-10-27
申请人： Veselin Brankovic , Dragan Krupezevic , Thomas Dölle , Tino Konschak
发明人： Veselin Brankovic , Dragan Krupezevic , Thomas Dölle , Tino Konschak
IPC分类号： H03D904
CPC分类号： H03D9/04 , H03D2200/0003 , H04B1/30 , H04L27/3827
摘要： The present invention relates to n-port junction devices for processing modulated digital RF signals, n being an integer larger than 3, the n-port junction device comprising two RF input ports (4, 5), two passive signal-combining means (2, 3) connected to each other wherein respectively one of the passive signal-combining means (2, 3) is connected to one of the RF inputs (4, 5), and at least two power sensors (P1, P2) wherein each of the passive signal-combining means (2, 3) has at least an output port (6, 7) and each output port (6, 7) is connected to a power sensor (P1, P2). The two passive signal-combining means (2, 3) are connected with each other by means of a phase shifting element (10).
摘要翻译：本发明涉及用于处理调制数字RF信号的n端口结器件，n是大于3的整数，n端口结器件包括两个RF输入端口（4,5），两个无源信号组合装置（2），3）彼此连接，其中无源信号组合装置（2,3）中的一个被连接到RF输入（4,5）中的一个，以及至少两个功率传感器（P1，P2），其中每个无源信号组合装置（2,3）至少具有一个输出端口（6,7），并且每个输出端口（6,7）连接到功率传感器（P1，P2）。两个无源信号组合装置（2,3）通过相移元件（10）相互连接。

4. 发明授权

US06507733B1 Three port junction receiver 失效
标题翻译：三端口接收器
公开(公告)号：US06507733B1
公开(公告)日：2003-01-14
申请号：US09461794
申请日：1999-12-15
申请人： Dragan Krupezevic , Veselin Brankovic , Masayoshi Abe , Tino Konschak , Thomas Dölle
发明人： Dragan Krupezevic , Veselin Brankovic , Masayoshi Abe , Tino Konschak , Thomas Dölle
IPC分类号： H04B126
CPC分类号： H03D3/007 , H04B1/30 , H04L27/38
摘要： The present invention proposes a direct receiver technique based on one power measurement and time multiplexing of input signals. The proposed technique allows I/Q demodulation. The proposed technique bases on the passive linear three-port high frequency circuitry (1) having two RF signal input (2, 5) and one output port (3) attached to a power sensor (4). The signals output from the power sensor (4) is low pass filtered (17) and supplied to a DC interface. The proposed linear three-port circuitry (1) contains at least one RF switch and at least one passive circuit having at least one phase shifter functionality.
摘要翻译：本发明提出了基于一个功率测量和输入信号的时间复用的直接接收机技术。所提出的技术允许I / Q解调。所提出的技术基于具有连接到功率传感器（4）的两个RF信号输入（2,5）和一个输出端口（3）的无源线性三端口高频电路（1）。从功率传感器（4）输出的信号被低通滤波（17）并提供给DC接口。所提出的线性三端口电路（1）包含至少一个RF开关和至少一个具有至少一个移相器功能的无源电路。

5. 发明授权

US06803814B1 Demodulator and method for the demodulation of modulated RF signals 失效
标题翻译：用于解调调制RF信号的解调器和方法
公开(公告)号：US06803814B1
公开(公告)日：2004-10-12
申请号：US09502656
申请日：2000-02-11
申请人： Dragan Krupezevic , Veselin Brankovic , Gerald Oberschmidt , Masayoshi Abe , Tino Konschak , Thomas Dölle
发明人： Dragan Krupezevic , Veselin Brankovic , Gerald Oberschmidt , Masayoshi Abe , Tino Konschak , Thomas Dölle
IPC分类号： H03D300
CPC分类号： H04L27/38 , H03D9/04
摘要： A demodulator for modulated RF signals comprises a passive four port structure (1). The four port structure (1) has a first input (3) for supplying a modulated RF signal to be demodulated. A second input (2) is supplied with a RF signal from a local oscillator (21). Two output terminals are connected to power sensors (4, 5). The RF signal from the local oscillator (21) is supplied to the second input (3) of the four port structure (1) without being RF switched by an RF switch. The demodulator is particularly useful for modulation schemes with a finite number of magnitude states (nQAM modulation).
摘要翻译：用于调制RF信号的解调器包括无源四端口结构（1）。四端口结构（1）具有用于提供待解调的调制RF信号的第一输入端（3）。第二输入（2）被提供有来自本地振荡器（21）的RF信号。两个输出端子连接到功率传感器（4,5）。来自本地振荡器（21）的RF信号被提供给四端口结构（1）的第二输入端（3），而不用RF开关进行RF切换。解调器对于具有有限数量级的状态（nQAM调制）的调制方案特别有用。

6. 发明授权

US06748203B1 Three port structure with modulated LO signal 失效
标题翻译：具有调制LO信号的三端口结构
公开(公告)号：US06748203B1
公开(公告)日：2004-06-08
申请号：US09672643
申请日：2000-09-28
申请人： Veselin Brankovic , Dragan Krupezevic , Gerald Oberschmidt , Tino Konschak , Thomas Dölle , Hamid Amir-Alikhani , Masayoshi Abe
发明人： Veselin Brankovic , Dragan Krupezevic , Gerald Oberschmidt , Tino Konschak , Thomas Dölle , Hamid Amir-Alikhani , Masayoshi Abe
IPC分类号： H04B106
CPC分类号： H04B1/30 , H03D3/007 , H04L27/38
摘要： A three port structure for the down conversion demodulation of a digitally modulated RF signal is proposed, wherein no RF switches are provided. The three port structure (1) has a first input (2) for the RF signal to be down converted and a second input (3) for a RF signal originating from a local oscillator (8). An output (4) of the three port structure (1) is supplied to a power sensor unit (5). The RF signal from the local oscillator (8) is modulated (7) before it is supplied to the three port structure (1).
摘要翻译：提出了一种用于数字调制RF信号的下变频解调的三端口结构，其中不提供RF开关。三端口结构（1）具有用于RF信号被降频转换的第一输入端（2）和用于源自本地振荡器（8）的RF信号的第二输入端（3）。三端口结构（1）的输出（4）被提供给功率传感器单元（5）。来自本地振荡器（8）的RF信号在被提供给三端口结构（1）之前被调制（7）。

7. 发明授权

US06539215B1 Down converter and demodulator using a three port junction 有权
标题翻译：下变频器和解调器使用三端口连接
公开(公告)号：US06539215B1
公开(公告)日：2003-03-25
申请号：US09578755
申请日：2000-05-25
申请人： Veselin Brankovic , Dragan Krupezevic , Masayoshi Abe , Tino Konschak , Thomas Dölle
发明人： Veselin Brankovic , Dragan Krupezevic , Masayoshi Abe , Tino Konschak , Thomas Dölle
IPC分类号： H04B126
CPC分类号： H04L27/2331 , H03D3/007 , H03D9/04 , H04B1/30
摘要： A down converter for RF signals comprises one three port junction (7) having one input port six for modulated digital RF signals and two output ports (8, 9). The output ports (8, 9) are respectively connected to a power sensor (10, 11). The three port junction (7) comprises a power splitter (16) dividing the signal supply to the input terminal (6) of the two branches, processing means (17, 18, 19, 21, 22, 23, 24) for processing one of the branches and a four port junction device (20) for combining the two branches and for generating two output signals to be supplied to the output terminals (8, 9) of the three port junction (7). The processing means can comprise a delay unit (18) or alternatively a frequency divider (21), a plurality of filters (22, 24) and a frequency multiplicator (23).
摘要翻译：用于RF信号的下变频器包括一个三端口结（7），其具有用于调制的数字RF信号的一个输入端口6和两个输出端口（8,9）。输出端口（8,9）分别连接到功率传感器（10,11）。三端口（7）包括功率分配器（16），将信号源分配给两个分支的输入端（6），处理装置（17,18,19,21,22,23,24）用于处理一个和用于组合两个分支并用于产生要提供给三端口（7）的输出端子（8,9）的两个输出信号的四端口连接装置（20）。处理装置可以包括延迟单元（18）或可替代地分频器（21），多个滤波器（22,24）和频率倍增器（23）。

8. 发明授权

US06735261B1 Calibration of a N-port receiver 失效
标题翻译： N端口接收机的校准
公开(公告)号：US06735261B1
公开(公告)日：2004-05-11
申请号：US09611488
申请日：2000-07-07
申请人： Gerald Oberschmidt , Veselin Brankovic , Dragan Krupzevic , Masayoshi Abe , Tino Konschak , Thomas Dölle
发明人： Gerald Oberschmidt , Veselin Brankovic , Dragan Krupzevic , Masayoshi Abe , Tino Konschak , Thomas Dölle
IPC分类号： H04L2706
CPC分类号： H03D9/04 , H04B1/30 , H04L27/2331
摘要： A technique for calibrating a N-port receiver, such as for example a 5- or 6-port receiver is proposed. The N-port receiver (1) comprises a first input (2) for a RF signal to be detected, a second input (3) for a RF signal originating from a local oscillator (4) and N−2 output terminals. Calibrating signals are generated on the basis of the RF signal supplied by the local oscillator (4). The calibration signals are fed to the first input (2) and/or the second input (3) of the N-port receiver (1). Calibration coefficients are calculated on the basis of the output signals generated by the N-port receiver (1) in response to the feeding of the calibration signals. The calibration signals are unmodulated signals and are only processed by means of a passive RF circuitry in the calibration device (100). The solutions according to the present invention allow a simple calibration of N-port receivers, which can be used as IQ demodulators or converters. Thereby a local oscillator (4) is used as a RF source for the calibration.
摘要翻译：提出了一种用于校准N端口接收机的技术，例如5或6端口接收机。 N端口接收器（1）包括用于要检测的RF信号的第一输入（2），用于来自本地振荡器（4）和N-2个输出端的RF信号的第二输入（3）。基于由本地振荡器（4）提供的RF信号产生校准信号。校准信号被馈送到N端口接收器（1）的第一输入端（2）和/或第二输入端（3）。基于由N端口接收器（1）响应于校准信号的馈送而产生的输出信号来计算校准系数。校准信号是未调制信号，并且仅通过校准装置（100）中的无源RF电路来处理。根据本发明的解决方案允许N端口接收机的简单校准，其可以用作IQ解调器或转换器。因此本地振荡器（4）被用作用于校准的RF源。

9. 发明授权

US07154975B1 Receiving apparatus and synchronizing method for a digital telecommunication system 有权
标题翻译：数字电信系统的接收装置和同步方法
公开(公告)号：US07154975B1
公开(公告)日：2006-12-26
申请号：US09510652
申请日：2000-02-22
申请人： Ralf Böhnke , Thomas Dölle , Tino Konschak
发明人： Ralf Böhnke , Thomas Dölle , Tino Konschak
IPC分类号： H04L25/38
CPC分类号： H04L7/041 , H04L7/046
摘要： A receiving apparatus (1) for receiving signals in a digital telecommunication system and a synchronizing method for synchronizing the receiving apparatus (1). The receiving apparatus (1) includes a receiver (2, 3) for receiving a reference symbol having at least two repetition patterns. One of the repetition patterns is phase-shifted in relation to the other. The receiving apparatus (1) is synchronized in the digital telecommunication system using the received reference symbol. The synchronization includes a cross correlation of at least one of the two repetition patterns within a cross correlation window having a predetermined length. In this manner, the performance and the accuracy of a cross correlation peak detection can be enhanced for improved synchronization.
摘要翻译：一种用于在数字电信系统中接收信号的接收装置（1）和用于同步接收装置（1）的同步方法。接收装置（1）包括用于接收具有至少两个重复模式的参考符号的接收器（2,3）。其中一个重复模式相对于另一个相移。接收设备（1）在数字电信系统中使用接收的参考符号进行同步。同步包括具有预定长度的互相关窗中的两个重复图案中的至少一个的互相关。以这种方式，可以增强互相关峰值检测的性能和精度，以改善同步。

10. 发明授权

US06654339B1 Synchronization symbol structure using OFDM based transmission method 有权
标题翻译：基于OFDM的传输方法的同步符号结构
公开(公告)号：US06654339B1
公开(公告)日：2003-11-25
申请号：US09479281
申请日：2000-01-06
申请人： Ralf Böhnke , Thomas Dölle , Tino Konschak
发明人： Ralf Böhnke , Thomas Dölle , Tino Konschak
IPC分类号： H04J1100
CPC分类号： H04L25/03343 , H04L5/0007 , H04L5/0042 , H04L27/2613 , H04L27/262 , H04L27/2626 , H04L27/2657 , H04L27/2662
摘要： The present invention proposes a method for generating synchronization bursts for OFDM transmission systems. The symbols of a predefined symbol sequence are mapped according to a predefined mapping scheme on subcarriers of the OFDM systems by a mapping unit (2), wherein the symbols of the predefined symbol sequence represent subcarriers of the OFDM system with nonzero amplitudes. A synchronization burst is generated by a inverse fast Fourier transforming unit (3) transforming the subcarriers of the OFDM system mapped to said predefined symbol sequence. The mapping (2) of the symbols of the predefined symbol sequence is set such that the resulting time domain signal of the synchronization burst represents a periodic nature. According to the invention the predefined symbol sequence is set such that the envelope fluctuation of the time domain signal of the synchronization burst is minimized. Therefore advantageous symbol sequences reducing said the envelope fluctuation of the time domain signal are proposed.
摘要翻译：本发明提出了一种用于生成用于OFDM传输系统的同步突发的方法。预定义符号序列的符号由映射单元（2）根据OFDM系统的子载波根据预定义的映射方案进行映射，其中预定符号序列的符号表示具有非零幅度的OFDM系统的子载波。由快速傅里叶逆变换单元（3）生成映射到所述预定符号序列的OFDM系统的子载波的同步突发。将预定义符号序列的符号的映射（2）设置为使得所得到的同步突发的时域信号表示周期性。根据本发明，预定义的符号序列被设置为使得同步脉冲串的时域信号的包络波动最小化。因此，提出了减少时域信号的包络波动的有利符号序列。

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