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1. 发明授权

CN1064492C 通信系统中执行频率变换的装置失效
公开(公告)号：CN1064492C
公开(公告)日：2001-04-11
申请号：CN95190590.2
申请日：1995-05-26
申请人：摩托罗拉公司
发明人：肯尼斯·A·斯特瓦特 , 罗伯特·T·拉弗
IPC分类号： H04B1/69
CPC分类号： H04B1/0021 , H03D3/007 , H03D2200/005 , H03D2200/0056 , H03D2200/006 , H03D2200/0068 , H03D2200/0072 , H03D2200/008 , H04B1/0003 , H04B1/0032 , H04B1/0046 , H04B1/26
摘要：这里描述一种执行将最后IF频率变换为基带频率的有效装置。计数器(401)产生两个逻辑信号G1(402)和G2(403)，并将它们传送到异或门(404)和多路复用器(406)。当控制信号(411)未声明时，多路复用器(406)使信号G1传送到I1，并使信号G2传送到I2；当控制信号(411)声明时，多路复用器(406)使二进信号G1传送到I2(410)并使信号G2传送到I1(407)。同样，当异或门(404)的输出声明时，多路复用器(405)互易其输入的实数和虚数的样值；否则不对它的输入样值进行任何操作。信号I1(407)和I2(410)分别用来控制反相器(408)和(409)的运算。当任一反相器运算时，该反相器执行反运算，否则不执行任何操作。

2. 发明公开

CN1130002A 通信系统中执行频率变换的装置失效
公开(公告)号：CN1130002A
公开(公告)日：1996-08-28
申请号：CN95190590.2
申请日：1995-05-26
申请人：摩托罗拉公司
发明人：肯尼斯·A·斯特瓦特 , 罗伯特·T·拉弗
IPC分类号： H04B1/69
CPC分类号： H04B1/0021 , H03D3/007 , H03D2200/005 , H03D2200/0056 , H03D2200/006 , H03D2200/0068 , H03D2200/0072 , H03D2200/008 , H04B1/0003 , H04B1/0032 , H04B1/0046 , H04B1/26
摘要：这里描述一种执行将最后IF频率变换为基带频率的有效装置。计数器(401)产生两个逻辑信号G1(402)和G2(403)，并将它们传送到异或门(404)和多路复用器(406)。当控制信号(411)未声明时，多路复用器(406)使信号G1传送到I1并使信号G2传送到I2；当控制信号(411)声明时，多路复用器(406)使二进信号G1传送到I2(410)并使信号G2传送到I1(407)。同样，当异或门(404)的输出声明时，多路复用器(405)互易其输入的实数和虚数的样值；否则不对它的输入样值进行任何操作。信号I1(407)和I2(410)分别用来控制反相器(408)和(409)的运算。当任一反相器运算时，该反相器执行反运算，否则不执行任何操作。

3. 发明申请

US20110103514A1 TRANSMITTER/RECEIVER AND DATA TRANSMISSION/RECEPTION METHOD IN COMMUNICATION SYSTEM 有权
标题翻译：通信系统中的发射机/接收机和数据传输/接收方法
公开(公告)号：US20110103514A1
公开(公告)日：2011-05-05
申请号：US12846169
申请日：2010-07-29
申请人： Sung-Ik PARK , Hyoungsoo Lim , Heung-Mook Kim , Donghoon Kang , Wangrok Oh
发明人： Sung-Ik PARK , Hyoungsoo Lim , Heung-Mook Kim , Donghoon Kang , Wangrok Oh
IPC分类号： H04L27/04 , H03D1/24
CPC分类号： H04L27/02 , H03C1/547 , H03D1/2245 , H03D2200/008
摘要： A transmitter for transmitting data in a communication system includes: a serial/parallel (S/P) conversion unit configured to convert data into an I signal and a Q signal; multiplication units configured to multiply the converted I and Q signals by orthogonal sequences, respectively; conversion units configured to Hilbert-transform the I and Q signals multiplied by the orthogonal sequences; addition units configured to add the I and Q signals multiplied by the orthogonal sequences and the Hilbert-transformed Q and I signal, respectively; and an intermediate frequency (IF)/radio frequency (RF) unit configured to up-convert the added I signal and the added Q signal and transmit the converted I and Q signals.
摘要翻译：一种用于在通信系统中传输数据的发射机包括：串行/并行（S / P）转换单元，被配置为将数据转换为I信号和Q信号; 乘法单元，分别被配置为通过正交序列来乘法转换的I和Q信号; 转换单元，被配置为希尔伯特变换乘以正交序列的I和Q信号; 附加单元，被配置为分别加上乘以正交序列的I和Q信号以及希尔伯特变换的Q和I信号; 以及中频（IF）/射频（RF）单元，被配置为对所添加的I信号和所添加的Q信号进行上变频，并发送所转换的I和Q信号。

4. 发明申请

US20180269890A1 POLAR ANALOG-TO-DIGITAL CONVERTER AND DOWN CONVERTER FOR BANDPASS SIGNALS 审中-公开
公开(公告)号：US20180269890A1
公开(公告)日：2018-09-20
申请号：US15919962
申请日：2018-03-13
申请人： Associated Universities, Inc.
发明人： Omar Artemi Yeste Ojeda
IPC分类号： H03M1/12 , H04B1/00 , H04L7/00 , H03D3/00
CPC分类号： H03M1/1245 , H03D3/007 , H03D2200/008 , H04B1/0042 , H04L7/0008
摘要： Methods and systems for generating a digital representation of the amplitude and phase of a bandpass signal are disclosed. The methods comprise filtering the bandpass signal with a bandpass filter, generating the real and imaginary parts of the complex analytic signal with a quadrature hybrid, determining the amplitude of the complex analytic signal by adding an even power-law transform of the real and imaginary parts of the complex analytic signal, and determining the phase of the complex analytic signal by comparing the real and imaginary parts of the complex analytic signal to zero and comparing an even power-law transform of the real and imaginary parts of the complex analytic signal to each other. Analog to digital converters and methods of converting complex analytic signals to digital signals are also disclosed.

5. 发明授权

US4902979A Homodyne down-converter with digital Hilbert transform filtering 失效
标题翻译：具有数字希尔伯特变换滤波的零差下转换器
公开(公告)号：US4902979A
公开(公告)日：1990-02-20
申请号：US321697
申请日：1989-03-10
申请人： Charles M. Puckette, IV
发明人： Charles M. Puckette, IV
IPC分类号： H03D3/00 , H03D7/00
CPC分类号： H03D3/008 , H03D2200/0054 , H03D2200/008 , H03D3/006 , H03D7/00
摘要： A homodyne down-converter, for use in an IF signal demodulator and the like, includes an analog-to-digital converter (ADC) which receives the IF analog signal for conversion to a digital data stream by sampling at a sampling rate frequency substantially equal to four times the IF signal frequency. A digital mixer controllably inverts the sampled data to convert the data to baseband, before a circuit removes the effects of DC offset in the analog IF signal applied to the ADC. A discrete Hilbert Transform filter is used for generating streams of sequential in-phase I' and quadrature-phase Q' data words, which are resampled to temporally align the two data word streams at a new data rate, thus effectively removing sample offset without the need for separate misalignment correction circuitry.
摘要翻译：用于IF信号解调器等的零差下转换器包括模数转换器（ADC），其通过以基本相等的采样率频率进行采样来接收IF模拟信号以转换为数字数据流到IF信号频率的四倍。在电路消除了施加到ADC的模拟IF信号中的DC偏移的影响之前，数字混合器可控地反转采样数据以将数据转换为基带。离散希尔伯特变换滤波器用于产生顺序同相I'和正交相位Q'数据字的流，这些数据字被重采样以便以新的数据速率对两个数据字流进行时间对准，从而有效地去除样本偏移，而没有需要单独的不对准校正电路。

6. 发明授权

US4878029A Complex digital sampling converter for demodulator 失效
标题翻译：用于解调器的复数数字采样转换器
公开(公告)号：US4878029A
公开(公告)日：1989-10-31
申请号：US280073
申请日：1988-12-05
申请人： Gary J. Saulnier , Randy G. Herrera , Timothy E. Thiel
发明人： Gary J. Saulnier , Randy G. Herrera , Timothy E. Thiel
IPC分类号： H03H17/08 , H03D3/00 , H03D7/00 , H04L27/00
CPC分类号： H03D3/009 , H03D3/008 , H03D2200/0047 , H03D2200/005 , H03D2200/006 , H03D2200/007 , H03D2200/008 , H03D2200/0082 , H03D3/006 , H03D7/00
摘要： A complex digital sampling converter, for use with an IF demodulator, includes: an analog-to-digital converter (ADC) receiving the IF analog signal for conversion to a digital data stream by sampling at a sampling rate frequency substantially equal to four times the IF signal frequency; a digital mixer for converting the sampled data to baseband; a sorter for separating the interleaved sequential in-phase I data words and quadrature-phase Q data words into a pair of concurrent I and Q data word streams; and at least one of a circuit for removing the effects of any DC offset in the analog IF signal applied to the ADC, and a circuit for correcting misalignment errors in the concurrent I and Q streams. Preferably, both correction circuits are utilized, with the DC offset removal circuit using averaging of all of the baseband samples, and the misalignment correction circuit averaging each pair of quadrature-phased Q data words while compensating the in-phase I data streams for the extra delay in the averaged Q data.
摘要翻译：与IF解调器一起使用的复数数字采样转换器包括：模数转换器（ADC），其接收IF模拟信号，用于通过以基本上等于四分之一倍的采样率频率进行采样来转换为数字数据流中频信号频率; 用于将采样数据转换成基带的数字混合器; 分类器，用于将交织的顺序同相I数据字和正交相位Q数据字分离成一对并行I和Q数据字流; 以及用于去除施加到ADC的模拟IF信号中的任何DC偏移的影响的电路中的至少一个，以及用于校正并行I和Q流中的未对准误差的电路。优选地，使用两个校正电路，其中DC偏移去除电路使用所有基带采样的平均，并且未对准校正电路对每对正交相位Q数据字进行平均，同时补偿同相I数据流的额外延迟平均Q数据。

7. 发明授权

US4506228A Digital FM detector 失效
标题翻译：数字FM检测器
公开(公告)号：US4506228A
公开(公告)日：1985-03-19
申请号：US405318
申请日：1982-08-05
申请人： Karl-Dirk Kammeyer
发明人： Karl-Dirk Kammeyer
IPC分类号： H03B27/00 , H03B28/00 , H03D3/00 , H03D3/02 , H03K9/04
CPC分类号： H03D3/007 , H03B27/00 , H03B28/00 , H03D2200/0035 , H03D2200/005 , H03D2200/006 , H03D2200/008 , H03D3/006 , H03D3/02
摘要： FM Signals are demodulated on an entirely digital basis by converting the digitalized signal into a pair of signals which are substantially Hilbert transforms of each other. This requires at least one pair of nonrecursive filters having lower signal sample rates at the output than at the input. Each signal is delayed by one output sample interval, so that cross products of the delayed and undelayed Hilbert transforms can be formed, and the difference between them obtained. Finally, an arc-sine table is used to remove sine-function distortion. A single multiplier-accumulator provided with extra registers can perform all of the necessary arithmetical operations at the speeds required.
摘要翻译： FM信号通过将数字化信号转换为彼此基本上为希尔伯特变换的一对信号而在完全数字的基础上进行解调。这需要至少一对非递归滤波器，在输出处具有比在输入处具有更低的信号采样率。每个信号被延迟一个输出采样间隔，从而可以形成延迟和未延迟希尔伯特变换的交叉乘积，并获得它们之间的差异。最后，使用电弧正弦表来消除正弦函数失真。提供额外寄存器的单个乘法器累加器可以以所需的速度执行所有必要的算术运算。

8. 发明专利

JPS61102804A Fm detection circuit 失效
标题翻译： FM检测电路
公开(公告)号：JPS61102804A
公开(公告)日：1986-05-21
申请号：JP22434484
申请日：1984-10-25
申请人： Pioneer Electronic Corp
发明人： MATSUMURA SUMITAKA
IPC分类号： H03D3/06 , H03D3/00
CPC分类号： H03D3/007 , H03D3/006 , H03D2200/008
摘要： PURPOSE: To eliminate the entry of the 2nd higher harmonic component to a base band and to detect a wave even if the frequency band of an FM signal subjected to Hilbert conversion overlaps with that of an FM signal as it is by detecting said two types of FM signals, rendering the 2nd higher harmonic component to obtain signals of the same phase and reverse one with respect to a base band component and calculating them so as to cancel the 2nd higher harmonic component.
CONSTITUTION: A pair of quadrature detection circuits 10 and 11 composed of a multiplier 1 and a delay circuit 2 are installed. The delay time of a delay circuit 13 for delaying an input signal by n-samples corresponds to that of a converter 12. Outputs of the pair of quadrature circuits 10 and 11 are added by an adder 14. This addition cancels the item of the 2nd higher harmonic component, and only the item of the base band component is outputted. More over its output goes to a two-folded level, and a detection gain can be taken generously.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了消除第二高次谐波分量进入基带并检测波，即使经过希尔伯特转换的FM信号的频带与FM信号的频带重叠，因此通过检测所述两种类型的 FM信号，使第二高次谐波分量相对于基带分量获得相同相位和相反的信号，并计算它们以消除第二高次谐波分量。构成：安装由乘法器1和延迟电路2组成的一对正交检测电路10和11。用于将输入信号延迟n个样本的延迟电路13的延迟时间对应于转换器12的延迟时间。一对正交电路10和11的输出由加法器14相加。该相加取消第二个高次谐波分量，并且仅输出基带分量的项目。更多的输出将达到两折，可以大幅度提高检测效果。

9. 发明公开

EP0716788A4 APPARATUS FOR PERFORMING FREQUENCY CONVERSION IN A COMMUNICATION SYSTEM 失效转让
标题翻译：在EINER TELEKOMMUNIKATIONSANORDNUNG的FREQUENZUMSETZER
公开(公告)号：EP0716788A4
公开(公告)日：1996-11-06
申请号：EP95922104
申请日：1995-05-26
申请人： MOTOROLA ENERGY SYSTEMS INC
发明人： STEWART KENNETH A , LOVE ROBERT T
IPC分类号： H03D3/00 , H04B1/26 , H04B1/69
CPC分类号： H04B1/0021 , H03D3/007 , H03D2200/005 , H03D2200/0056 , H03D2200/006 , H03D2200/0068 , H03D2200/0072 , H03D2200/008 , H04B1/0003 , H04B1/0032 , H04B1/0046 , H04B1/26
摘要： An efficient apparatus for performing frequency conversion from a final IF frequency to a baseband frequency is described. A counter (401) generates two logical signals G1 (402) and G2 (403) which are passed to an exclusive-OR gate (404) and a multiplexer (406). When a control signal (411) is deasserted, multiplexer (406) passes signal G1 to I1 and signal G2 to I2; when control signal (411) is asserted, multiplexer (406) passes binary signal G1 to I2 (410) and signal G2 to I1 (407). Similarly, multiplexer (405) swaps its input real and imaginary samples when the output of exclusive-OR gate (404) is asserted; otherwise, it performs no operation on its input samples. Signals I1 (407) and I2 (410) are used to control arithmetic inverters (408) and (409) respectively. When the controlling signal for either inverter is asserted, the inventer performs arithmetic inversion, otherwise it performs no operation.
摘要翻译：描述了用于执行从最终IF频率到基带频率的频率转换的有效设备。计数器（401）产生传送到异或门（404）和多路复用器（406）的两个逻辑信号G1（402）和G2（403）。当控制信号（411）无效时，多路复用器（406）将信号G1传递给I1并将信号G2传递给I2; 当控制信号（411）被断言时，多路复用器（406）将二进制信号G1传递给I2（410）并将信号G2传递给I1（407）。类似地，当异或门（404）的输出被声明时，多路复用器（405）交换其输入实数和虚数样本; 否则，它不会对其输入采样执行任何操作。信号I1（407）和I2（410）分别用于控制算术逆变器（408）和（409）。当任一个逆变器的控制信号有效时，本发明人执行算术逆变，否则它不执行任何操作。

10. 发明授权

EP0080014B1 Digital demodulator for frequency-modulated signals 失效
标题翻译：数字调制解调器用于频率调制信号
公开(公告)号：EP0080014B1
公开(公告)日：1986-12-30
申请号：EP82105412
申请日：1982-06-21
申请人： ROBERT BOSCH GMBH
发明人： KAMMEYER, KARL-DIRK, DR.-ING.
IPC分类号： H03B27/00 , H03B28/00 , H03D3/00 , H03D3/02
CPC分类号： H03D3/007 , H03B27/00 , H03B28/00 , H03D3/006 , H03D3/02 , H03D2200/0035 , H03D2200/005 , H03D2200/006 , H03D2200/008

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