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1. 发明申请

US20060170828A1 Integrated circuit for a mobile television receiver 审中-公开
标题翻译：移动电视接收机的集成电路
公开(公告)号：US20060170828A1
公开(公告)日：2006-08-03
申请号：US11329980
申请日：2006-01-11
申请人： Claus Muschallik , Hwang Low , Tee Neo
发明人： Claus Muschallik , Hwang Low , Tee Neo
IPC分类号： H04N7/173 , H04N5/50 , H03J7/32 , H04M1/00 , H04N7/16
CPC分类号： H04B7/0837 , H03G3/3068 , H03J5/244 , H03J2200/01 , H03J2200/40 , H04B7/084 , H04B7/10 , H04N5/44 , H04N5/4401 , H04N5/455 , H04N5/46 , H04N21/41407 , H04N21/4382 , H04N21/4436 , Y02D70/124 , Y02D70/442 , Y02D70/444
摘要： An integrated circuit for a mobile television receiver has a processing path for I/Q demodulation, a processing path for low IF demodulation, and a switch that determines which of the processing paths is used to generate an output. The integrated circuit may be employed irrespective of which of the two processing standards is required for received mobile TV signals. The integrated circuit may be designed to reduce power consumption in the mobile device, for example by disabling sections of the integrated circuit when they are not in use.
摘要翻译：用于移动电视接收机的集成电路具有用于I / Q解调的处理路径，用于低IF解调的处理路径，以及确定使用哪个处理路径来生成输出的开关。可以使用集成电路，而不管接收的移动TV信号需要两个处理标准中的哪一个。集成电路可以被设计为降低移动设备中的功耗，例如通过在集成电路不使用时禁用集成电路的部分。

2. 发明授权

US07203466B2 Transmitting and receiving unit 有权
标题翻译：发射和接收单元
公开(公告)号：US07203466B2
公开(公告)日：2007-04-10
申请号：US10673740
申请日：2003-09-26
申请人： Claus Muschallik , Bernd Pflaum , Robert Sedlmaier
发明人： Claus Muschallik , Bernd Pflaum , Robert Sedlmaier
IPC分类号： H04B1/40
CPC分类号： H04B1/30 , H04B1/40 , H04L27/2602
摘要： A transmitting and receiving unit includes a receiving branch and a transmitting branch that are in each case constructed for conducting complex signals, with a control device that drives a switch by which either a phase-locked loop is switched through to frequency converters provided at the transmitting and receiving end, for providing a common carrier frequency, or in each case an independently operating PLL is provided for the transmitting and receiving branch. Such a configuration enables the transmitter, for example, to operate with direct conversion whereas the receiver can operate, for example, on the low IF principle. The invention is suitable for OFDM multi-carrier systems.
摘要翻译：发送和接收单元包括接收支路和发送支路，每个发送支路在每种情况下被构造用于进行复信号，其中控制装置驱动开关，通过该开关将锁相环切换到设置在发送端的频率转换器和接收端，用于提供公共载波频率，或者在每种情况下，为发送和接收分支提供独立操作的PLL。这种配置使得发射机例如能够以直接转换进行操作，而接收机可以例如以低IF原理操作。本发明适用于OFDM多载波系统。

3. 发明申请

US20090156155A1 RECEIVER, TUNER AND METHOD OF PROCESSING A TELEVISION SIGNAL 审中-公开
标题翻译：接收器，调谐器和处理电视信号的方法
公开(公告)号：US20090156155A1
公开(公告)日：2009-06-18
申请号：US11957819
申请日：2007-12-17
申请人： Erwin Krug , Claus Muschallik , Lars Persson
发明人： Erwin Krug , Claus Muschallik , Lars Persson
IPC分类号： H04B1/26
CPC分类号： H04B1/28 , H04N5/455 , H04N21/4382
摘要： The invention is related to a receiver and a tuner respectively, particularly to a television receiver or tuner which can be integrated in a single circuit device. The invention is also related to a method for processing RF signal.
摘要翻译：本发明分别涉及一种接收机和调谐器，特别是涉及可集成在单个电路设备中的电视接收机或调谐器。本发明还涉及一种处理RF信号的方法。

4. 发明授权

US10498371B1 Multi-channel, multi-band configurable RF front-end arrangement for wireless communication 有权
公开(公告)号：US10498371B1
公开(公告)日：2019-12-03
申请号：US15986913
申请日：2018-05-23
申请人： Nimesh D Parikh , Claus Muschallik , MH Gan , Aaron Do
发明人： Nimesh D Parikh , Claus Muschallik , MH Gan , Aaron Do
IPC分类号： H04B1/00 , H04B1/26 , H04B1/18 , H03D7/16 , H04L5/14 , H04B1/48 , H04W72/04
CPC分类号： H04B1/0096 , H03D7/161 , H04B1/006 , H04B1/0075 , H04B1/18 , H04B1/26 , H04B1/48 , H04L5/14 , H04W72/0453
摘要： An RF front-end system is formed to include tunable frequency converters within the transmit and receive sections of each channel, allowing for conventional, limited-bandwidth wireless devices to transmit and receive a broad range of frequencies. Both the transmit and receive sections use superheterodyne frequency conversion to provide the translation between the limited frequency band associated with conventional wireless devices and wide frequency band (e.g., between about 100 MHz and 7000 MHz) approved for wireless communication. By virtue of using a local oscillator that can be widely tuned over the complete available frequency spectrum, the up-converted signals used for transmission can be expanded over this wider frequency selection.

5. 发明申请

US20090086618A1 Amplitude Attenuation Estimation and Recovery Systems for OFDM Signal used in Communication Systems 有权
标题翻译：用于通信系统的OFDM信号的幅度衰减估计和恢复系统
公开(公告)号：US20090086618A1
公开(公告)日：2009-04-02
申请号：US11865393
申请日：2007-10-01
申请人： Claus Muschallik , Yun Ye , Jien Mei Loh , Tee Yong Neo
发明人： Claus Muschallik , Yun Ye , Jien Mei Loh , Tee Yong Neo
IPC分类号： H04J11/00 , H04B7/10 , H04L27/08
CPC分类号： H04L27/2647 , H04L27/3809
摘要： This disclosure relates to amplitude correction for orthogonal frequency division multiplexing signals received by a communication device. An amplitude attenuation estimation is performed for amplitude correction on received OFDM signals.
摘要翻译：本公开涉及由通信设备接收的正交频分复用信号的幅度校正。对接收的OFDM信号进行幅度校正的幅度衰减估计。

6. 发明授权

US6088327A Method and circuit arrangement for improving carrier separation for the transmission of OFDM signals 失效
标题翻译：用于改善OFDM信号传输的载波分离的方法和电路装置
公开(公告)号：US6088327A
公开(公告)日：2000-07-11
申请号：US952436
申请日：1997-11-17
申请人： Claus Muschallik , Veit Armbruster
发明人： Claus Muschallik , Veit Armbruster
IPC分类号： H04J11/00 , H04L27/26
CPC分类号： H04L27/265 , H04L27/2644
摘要： In the case of the OFDM method, a large number of modulated carriers are transmitted using frequency division multiplexing, a spectrum having a virtually rectangular shape being produced as a result of the large number of carriers. In order to separate the carriers from one another again in the receiver, a Fast-Fourier-Transformation is carried out, it then being possible to separate each carrier cleanly from the others provided the carriers are exactly orthogonal with respect to one another. The carrier orthogonality can, however, be disturbed by various causes. Furthermore, the wanted signal must be separated from the undesired adjacent channel signals by analog or digital filtering in the receiver. In order to improve carrier and channel separation, the selectivity of the FFT filtering can be increased by enlarging the number of FFT components. However, this normally leads to an undesirably sharp increase in the computation complexity. The refinement according to the invention of the time window which is used for the FFT and the oversampling before the FFT make it possible, however, to dispense with calculation of some of the coefficients.
摘要翻译： PCT No.PCT / EP96 / 02209 Sec。 371日期：1997年11月17日 102（e）日期1997年11月17日PCT 1996年5月23日PCT公布。公开号WO96 / 41458 日期：1996年12月19日在OFDM方法的情况下，使用频分复用来发送大量的调制载波，作为大量载波的结果产生具有虚拟矩形形状的频谱。为了在接收机中再次分离载波，执行快速傅里叶变换，然后可以将每个载波与其它载波干净地分离，只要载波相对于彼此完全正交即可。然而，载体正交性可能受到各种原因的干扰。此外，有用信号必须通过接收机中的模拟或数字滤波与不期望的相邻信道信号分离。为了改善载波和信道分离，可以通过扩大FFT分量的数量来增加FFT滤波的选择性。然而，这通常导致计算复杂度的不期望的急剧增加。然而，根据本发明的用于FFT的FFT和在FFT之前的过采样的时间窗口的细化使得可以省略一些系数的计算。

7. 发明授权

US07920462B2 Amplitude attenuation estimation and recovery systems for OFDM signal used in communication systems 有权
标题翻译：用于通信系统的OFDM信号的幅度衰减估计和恢复系统
公开(公告)号：US07920462B2
公开(公告)日：2011-04-05
申请号：US11865393
申请日：2007-10-01
申请人： Claus Muschallik , Yun Ye , Jien Mei Loh , Tee Yong Neo
发明人： Claus Muschallik , Yun Ye , Jien Mei Loh , Tee Yong Neo
IPC分类号： H04J11/00
CPC分类号： H04L27/2647 , H04L27/3809
摘要： This disclosure relates to amplitude correction for orthogonal frequency division multiplexing signals received by a communication device. An amplitude attenuation estimation is performed for amplitude correction on received OFDM signals.
摘要翻译：本公开涉及由通信设备接收的正交频分复用信号的幅度校正。对接收的OFDM信号进行幅度校正的幅度衰减估计。

8. 发明授权

US06636727B2 Phase locked loop system 有权
标题翻译：锁相环系统
公开(公告)号：US06636727B2
公开(公告)日：2003-10-21
申请号：US09793340
申请日：2001-02-26
申请人： Claus Muschallik , Bernd Pflaum , Heinz Lang
发明人： Claus Muschallik , Bernd Pflaum , Heinz Lang
IPC分类号： H04B106
CPC分类号： H03L7/0898 , H03J5/0281 , H03J5/244 , H03L7/183 , H04L27/2657 , H04L2027/0016 , H04L2027/0028 , H04L2027/0059 , H04L2027/0067 , H04N5/4401 , H04N5/455
摘要： A phase locked loop system for tuning the reception frequency of a receiver for digitally modulated received signals and analog-modulated received signals has at least one voltage controlled oscillator for producing an oscillator signal for a reception frequency tuning. A first frequency divider is provided for dividing the frequency of the oscillator signal to a nominal comparison frequency as a function of a receiving channel selection signal. A second frequency divider is provided for dividing a reference frequency as a function of a reception mode switching signal. A phase comparison circuit is provided for comparing the signals supplied by the frequency dividers in order to produce a tuning voltage for the voltage controlled oscillator wherein the gain of the phase comparison circuit is adjustable in order to optimize the phase noise.
摘要翻译：用于调谐用于数字调制接收信号和模拟调制接收信号的接收机的接收频率的锁相环系统具有用于产生用于接收频率调谐的振荡器信号的至少一个压控振荡器。提供了第一分频器，用于将振荡器信号的频率与作为接收信道选择信号的函数的标称比较频率进行分频。提供了第二分频器，用于根据接收模式切换信号来划分参考频率。提供了相位比较电路，用于比较由分频器提供的信号，以产生用于压控振荡器的调谐电压，其中相位比较电路的增益可调，以优化相位噪声。

9. 发明授权

US06304545B1 Method and circuit arrangement for the correction of phase and/or frequency errors in digital multicarrier signals 有权
标题翻译：用于校正数字多载波信号中的相位和/或频率误差的方法和电路装置
公开(公告)号：US06304545B1
公开(公告)日：2001-10-16
申请号：US09138508
申请日：1998-08-24
申请人： Veit Armbruster , Claus Muschallik
发明人： Veit Armbruster , Claus Muschallik
IPC分类号： H04J1100
CPC分类号： H04L27/2657 , H04L27/2695
摘要： In an OFDM system, the so-called self-noise component, which represents that noise component of the respective carrier which is caused by the carrier itself and is mapped onto itself, can be estimated and corrected by shifting all the carriers back in the receiver by multiplication by a factor which is determined by averaging. The so-called external-noise component, which is caused by adjacent carrier interference from the so-called leakage effect of the Fast Fourier transform (FFT2) used in the receiver for demodulation cannot be corrected using this method. In addition to the demodulation FFT, a further FFT (FFT1) is used in the receiver to estimate the self-noise component (&psgr;e). The estimated self-noise component is used to reproduce the orthogonality between the carriers by correction before the demodulation FFT, to thereby prevent crosstalk. The additional FFT (FFT1) may have a shorter length than the demodulation FFT (FFT2), so that the additional complexity is negligible.
摘要翻译：在OFDM系统中，表示由载波本身引起并被映射到其自身上的相应载波的噪声分量的所谓的自噪声分量可以通过在接收机中将所有载波反向移位来估计和校正通过乘以由平均确定的因子。所谓的外部噪声成分是由接收机中用于解调的快速傅里叶变换（FFT2）的所谓的泄漏效应的相邻载波干扰引起的，不能用该方法进行校正。除了解调FFT之外，在接收机中使用另外的FFT（FFT1）来估计自噪声分量（psie）。估计的自噪声分量用于通过在解调FFT之前的校正来再现载波之间的正交性，从而防止串扰。附加FFT（FFT1）可以具有比解调FFT（FFT2）更短的长度，使得额外的复杂度是可忽略的。

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