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1. 发明专利

JP2002319826A METHOD AND CIRCUIT FOR DOWN-CONVERTING SIGNAL WITH USE OF COMPLEMENTARY FET WITH ENHANCED DYNAMIC RANGE 审中-公开
公开(公告)号：JP2002319826A
公开(公告)日：2002-10-31
申请号：JP2002054734
申请日：2002-02-28
申请人： PARKERVISION INC
发明人： SORRELLS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , LOOKE RICHARD C , MOSES CHARLEY D JR , RAWLINS GREGORY S , RAWLINS MICHAEL W
IPC分类号： H03D3/00 , H03C1/62 , H03C7/00 , H03D7/00 , H03D7/12 , H03D9/00 , H04B1/26 , H04B1/30 , H04B7/12 , H04L27/00
摘要： PROBLEM TO BE SOLVED: To provide a method for down-converting an electromagnetic(EM) signal by aliasing the EM signal. SOLUTION: The system and circuit for down-converting the EM signal is operated by receiving the EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased according to the aliasing signal to down-convert the EM signal. The term aliasing, as used herein, refers to both down converting an EM signal by under-sampling the EM signal at an aliasing rate, and down- converting an EM signal by transferring energy from the EM signal at the aliasing rate. In an embodiment, the EM signal is down-converted into an intermediate (IF) frequency. In another embodiment, the EM signal is down-converted to a demodulated base band information signal.

2. 发明专利

JP2003243936A APPLICATION OF UNIVERSAL FREQUENCY TRANSLATION 审中-公开
公开(公告)号：JP2003243936A
公开(公告)日：2003-08-29
申请号：JP2003015382
申请日：2003-01-23
申请人： PARKERVISION INC
发明人： SORRELLS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , LOOKE RICHARD C , MOSES CHARLEY D JR , RAWLINS MICHAEL W , RAWLINS GREGORY S
IPC分类号： G06F3/00 , H03D7/00 , H04B1/04 , H04B1/26 , H04M11/00 , H04Q9/00
摘要： PROBLEM TO BE SOLVED: To receive a first communication signal in communication in applications and down-convert the first communication signal into a second communication signal with a frequency lower than that of the first communication signal. SOLUTION: An aliasing module 2000 receives a control signal including pulses with a pulse width in the case of down-conversion, under-samples the first communication signal in response to the control signal, delivers the energy from the first communication signal for a period equivalent to the pulse width, integrates the delivered energy for the pulse width period, and produces the second communication signal from the delivered and integrated energy. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003037508A System and method for frequency up-conversion 审中-公开
标题翻译：用于频率上变换的系统和方法
公开(公告)号：JP2003037508A
公开(公告)日：2003-02-07
申请号：JP2002149485
申请日：2002-05-23
申请人： Parkervision Inc , パーカーヴィジョンインコーポレイテッド
发明人： SORRELLS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , LOOKE RICHARD C , MOSES CHARLEY D JR , RAWLINS GREGORY S , RAWLINS MICHAEL W
IPC分类号： H03C1/00 , H03C1/62 , H03C3/00 , H03D7/00 , H04B1/04 , H04B7/12 , H04L27/00 , H04L27/04 , H04L27/12 , H04L27/20 , H04L27/36
CPC分类号： H03D7/00 , H03C1/62 , H04B7/12
摘要： PROBLEM TO BE SOLVED: To provide a system and a method for effective frequency up- conversion of a signal. SOLUTION: In a step 902, an information signal is generated by a caller. The information signal has a baseband frequency. The information signal is used to modulate an intermediate signal. Accordingly, the information signal is also called a modulating baseband information signal. An oscillating signal is generated in a step 904. In a step 906, the oscillating signal is modulated, where the modulation results in a function of the information signal. In the step 906, a modulated oscillating signal is generated, and is also called a modulated intermediate signal. A harmonica rich signal is generated in a step 908, and actually includes a continuous and periodic waveform. In a step 910, spurious harmonics of continuous and periodic waveform are filtered and removed from the harmonic rich signal. In a step 912, remaining harmonics are transmitted.
摘要翻译：要解决的问题：提供一种有效的信号上变频的系统和方法。解决方案：在步骤902中，由呼叫者生成信息信号。信息信号具有基带频率。信息信号用于调制中间信号。因此，信息信号也称为调制基带信息信号。在步骤904中产生振荡信号。在步骤906中，调制振荡信号，其中调制产生信息信号的功能。在步骤906中，产生调制振荡信号，也称为调制中间信号。在步骤908中产生富有口感的信号，实际上包括连续和周期性波形。在步骤910中，连续和周期性波形的杂散谐波被滤波并从谐波丰富信号中去除。在步骤912中，发送剩余的谐波。

4. 发明专利

JP2002314343A INTEGRATED FREQUENCY CONVERSION AND SELECTION WITH VARIETY OF FILTER EMBODIMENTS 审中-公开
公开(公告)号：JP2002314343A
公开(公告)日：2002-10-25
申请号：JP2002048676
申请日：2002-02-25
申请人： PARKERVISION INC
发明人： SORRELLS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , LOOKE RICHARD C , MOSES CHARLEY D JR , RAWLINS GREGORY S , RAWLINS MICHAEL W
IPC分类号： H03H15/00 , H03D7/00 , H03H17/00 , H03H17/02 , H04B1/26
摘要： PROBLEM TO BE SOLVED: To reduce spurious waves by integrating a frequency selection circuit and a frequency conversion circuit. SOLUTION: A frequency converter 1708 including a down-converter for undersampling an input signal and converting the undersampled input signal into a lowpass frequency and a delay module and a delay module including at least a portion of the delay module delay the output signal, a scaling module scales the delayed output signal, an adder 1720 subsequently performs addition, and the output signal is obtained as an IF signal or a baseband signal.

5. 发明申请

WO0139361A3 PHASE SHIFTING APPLICATIONS OF UNIVERSAL FREQUENCY TRANSLATION 审中-公开
标题翻译：通用频率翻译的相位移位应用
公开(公告)号：WO0139361A3
公开(公告)日：2002-08-01
申请号：PCT/US0031659
申请日：2000-11-20
申请人： PARKERVISION INC
发明人： JOHNSON MARTIN R , JENSEN JONATHAN S , SHORT ROBERT T , YOUNG JAMISON L , SORRELLS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , LOOKE RICHARD C , MOSES CHARLEY D JR
IPC分类号： H03D7/00
CPC分类号： H03D7/00
摘要： A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called on aliasing signal). By controlling the relative sampling time, the UFT module implements a relative phase shift during frequency translation. In other words, a relative phase shift can be introduced in the output signal by sampling the input signal at one point in time relative to another point in time. As such, the UFT module can be configured as an integrated frequency translator and phase-shifter. This includes the UFT module as an integrated down-converter and phase shifter, and the UFT module as an integrated up-converter and phase shifter. Applications of universal frequency translation and phase shifting include phased array antennas that utilize integrated frequency translation and phase shifting technology to steer the one or more main beams of the phased array antenna.
摘要翻译：通用频率转换模块（UFT）频率通过根据周期性控制信号（也称为混叠信号）对EM输入信号进行采样来转换电磁（EM）输入信号。通过控制相对采样时间，UFT模块在频率转换期间实现相对相移。换句话说，通过在一个时间点相对于另一个时间点对输入信号进行采样，可以在输出信号中引入相对相移。因此，UFT模块可以被配置为集成频率转换器和移相器。这包括作为集成的下变频器和移相器的UFT模块，以及作为集成上变频器和移相器的UFT模块。通用频率转换和相移的应用包括利用集成频率转换和相移技术来引导相控阵天线的一个或多个主波束的相控阵天线。

6. 发明申请

WO0126215A3 DOWN CONVERTER USING SUBSAMPLING 审中-公开
标题翻译：下变频器使用SUBSAMPLING
公开(公告)号：WO0126215A3
公开(公告)日：2002-01-31
申请号：PCT/US0027555
申请日：2000-10-06
申请人： PARKERVISION INC
发明人： SORRELLS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , JENSEN JONATHAN S , JOHNSON MARTIN R , LOOKE RICHARD C , MOSES CHARLEY D JR , RAWLINS GREGORY S , RAWLINS MICHAEL W , SHORT ROBERT T , YOUNG JAMISON L
IPC分类号： H03D3/00 , H03D7/00
CPC分类号： H03D3/006 , H03D7/00
摘要： Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset voltages and re-radiation generated when down-converting an electromagnetic (EM) signal is also described herein. Down-converting a signal and improving receiver dynamic range is also described herein.
摘要翻译：这里描述了通过使EM信号进行混叠来对电磁（EM）信号进行下变频的方法，系统和装置及其应用。本文还描述了降低或消除直流偏移电压和下变频电磁（EM）信号时产生的再辐射。本文还描述了下变频信号和改善接收机动态范围。

7. 发明申请

WO0126214A3 FREQUENCY CONVERTER AND METHOD 审中-公开
标题翻译：频率转换器和方法
公开(公告)号：WO0126214A3
公开(公告)日：2001-12-13
申请号：PCT/US0027281
申请日：2000-10-04
申请人： PARKERVISION INC
发明人： SORRELLS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , LOOKE RICHARD C , MOSES CHARLEY D JR , RAWLINS GREGORY S , RAWLINS MICHAEL W
IPC分类号： H03D3/00 , H03D7/00
CPC分类号： H03D7/00 , H03D3/006
摘要： A balanced transmitter up-converts a baseband signal directly from baseband-to-RF. The up-conversion process is sufficiently linear that no IF processing is required, even in communications applications that have stringent requirements on spectral growth. In operation, the balanced modulator sub-harmonically samples the baseband signal in a balanced and differential manner, resulting in harmonically rich signal. The harmonically rich signal contains multiple harmonic images that repeat at multiples of the sampling frequency, where each harmonic contains the necessary information to reconstruct the baseband signal. The differential sampling is performed according to a first and second control signals that are phase shifted with respect to each other. In embodiments of the invention, the control signals have pulse widths (or apertures) that operate to improve energy transfer to a desired harmonic in the harmonically rich signal. A bandpass filter can then be utilized to select the desired harmonic of interest from the harmonically rich signal. The sampling modules that perform the sampling can be configured in either a series or a shunt configuration. In embodiments of the invention, DC offset voltages are minimized between the sampling modules to minimize or prevent carrier insertion into the harmonic images.
摘要翻译：平衡发射机直接从基带到RF RF转换基带信号。上转换过程是足够的线性，即使在对频谱增长有严格要求的通信应用中也不需要IF处理。在运行中，平衡调制器以平衡和差分的方式对基带信号进行子谐波采样，从而产生谐波丰富的信号。谐波丰富的信号包含以抽样频率的倍数重复的多个谐波图像，其中每个谐波包含必要的信息以重构基带信号。根据相对于彼此相移的第一和第二控制信号来执行差分采样。在本发明的实施例中，控制信号具有脉冲宽度（或孔径），其操作以改善在谐波丰富信号中的期望谐波的能量传递。然后可以利用带通滤波器从谐波丰富的信号中选择所需要的谐波。执行采样的采样模块可以以串联或分流配置进行配置。在本发明的实施例中，采样模块之间的DC偏移电压最小化，以最小化或防止载波插入到谐波图像中。

8. 发明专利

AT312432T 未知
公开(公告)号：AT312432T
公开(公告)日：2005-12-15
申请号：AT00967288
申请日：2000-10-04
申请人： PARKERVISION INC
发明人： SORRELLS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , LOOKE RICHARD C , MOSES CHARLEY D JR , RAWLINS GREGORY S , RAWLINS MICHAEL W
IPC分类号： H03D3/00 , H03D7/00 , H03D7/16

9. 发明专利

CA2370100C METHOD FOR DOWN-CONVERTING AN ELECTROMAGNETIC SIGNAL 未知
公开(公告)号：CA2370100C
公开(公告)日：2005-06-14
申请号：CA2370100
申请日：2000-04-14
申请人： PARKERVISION INC
发明人： RAWLINS MICHAEL W , COOK ROBERT W , LOOKE RICHARD C , RAWLINS GREGORY S , BULTMAN MICHAEL J , SORRELLS DAVID F , MOSES CHARLEY D JR
IPC分类号： H03D1/00 , H03D3/00 , H03D7/00 , H03D9/00 , H04B1/26
摘要： Methods, systems, and apparatuses, and combinations and subcombinations thereof, for down-converting an electromagnetic (EM) signal are described herein. Briefly stated, in embodiments the invention operates by receiving a n EM signal and recursively operating on approximate half cycles (1/2, 1 , 2 , etc.) of the carrier signal. The recursive operations can be performed at a sub-harmonic rate of the carrier signal. The invention accumulates the resul ts of the recursive operations and uses the accumulated results to form a down- converted signal. In an embodiment, the EM signal is down-converted to an intermediate frequency (IF) signal. In another embodiment, the EM signal is down-converted to a baseband information signal. In another embodiment, the EM signal is a frequency modulated (FM) signal, which is down-converted to a no n- FM signal, such as a phase modulated (PM) signal or an amplitude modulated (AM) signal.

10. 发明专利

GB2368476B Method and apparatus for down-converting a modulated electromagnetic signal 未知
公开(公告)号：GB2368476B
公开(公告)日：2003-01-08
申请号：GB0128484
申请日：1999-10-20
申请人： PARKERVISION INC
发明人： SORRELS DAVID F , BULTMAN MICHAEL J , COOK ROBERT W , LOOKE RICHARD C , MOSES JNR CHARLEY D , RAWLINS GREGORY S , RAWLINS MICHAEL W
IPC分类号： H03D7/00 , H03D3/00 , H03D1/00

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