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91. 发明申请

WO03007470A8 HARMONIC MIXER 审中-公开
标题翻译：谐波混频器
公开(公告)号：WO03007470A8
公开(公告)日：2005-05-26
申请号：PCT/US0221261
申请日：2002-07-03
申请人： ADVANCED MICRO DEVICES INC , KLUGE WOLFRAM , EGGERT DIETMAR
发明人： KLUGE WOLFRAM , EGGERT DIETMAR
IPC分类号： H03B21/01 , H03D7/14 , H04L27/20 , H04L27/36
CPC分类号： H03B21/01 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D7/1475 , H03D7/1491 , H03D7/165
摘要： The invention provides a harmonic direct conversion mixer having a multiplier circuit (10) comprising first and second mixers and a generator (20) for generating two first (21, 22) and two second (23, 24) control signals for controlling the first and second mixers. The control signals are balanced signals and are provided in four phases shifted by pi /2 in phase. The frequency of the control signals is different from the frequency of the mixer input signal (19).
摘要翻译：本发明提供一种具有包括第一和第二混频器的乘法器电路（10）的谐波直接转换混合器和用于产生两个第一（21,22）和两个第二（23,24）个控制信号的发生器（20），用于控制第一和第二混合器第二搅拌机控制信号是平衡信号，并且以相位π/ 2同相四个相位提供。控制信号的频率与混频器输入信号（19）的频率不同。

92. 发明申请

WO2004070940A1 TUNER FOR RECEPTION OF DIGITAL AND ANALOG TELEVISION SIGNALS 审中-公开
标题翻译：接收数字和模拟电视信号的调谐器
公开(公告)号：WO2004070940A1
公开(公告)日：2004-08-19
申请号：PCT/US2004/001704
申请日：2004-01-23
申请人： CONEXANT SYSTEMS, INC. , ESWEIN, Glenn , LINDSTROM, Mats
发明人： ESWEIN, Glenn , LINDSTROM, Mats
IPC分类号： H03D7/16
CPC分类号： H03D7/165
摘要： A television tuner for tuning analog and digital television signals that requires only one off-chip filter. An integrated first frequency stage up-converts the received signal to a higher frequency. An off-chip filter provides coarse tuning of the up-converted signal. An integrated second frequency stage separates and down-converts the signal into I and Q components having a low IF in a range of 10-15 MHz. An integrated on-chip filter finely tunes the I and Q components. Where tuning of both analog and digital signals is contemplated, the on-chip filter is an image rejection filter. Where tuning of only digital signals is contemplated, the on-chip filter may be a DC notch filter.
摘要翻译：用于调谐模拟和数字电视信号的电视调谐器，只需要一个片外滤波器。集成的第一频率级将接收的信号上变频到更高的频率。片外滤波器提供上变频信号的粗调。集成的第二频率级将信号分离并下变频为具有在10-15MHz范围内的低IF的I和Q分量。集成片上滤波器可精细调整I和Q组件。在考虑模拟和数字信号两者的调谐的情况下，片上滤波器是镜像抑制滤波器。在仅考虑数字信号的调谐的情况下，片上滤波器可以是DC陷波滤波器。

93. 发明申请

WO0243255A3 QUADRATURE GENERATOR WITH IMAGE REJECT MIXER 审中-公开
标题翻译：具有图像抑制混合器的平方发生器
公开(公告)号：WO0243255A3
公开(公告)日：2004-02-12
申请号：PCT/US0146189
申请日：2001-10-31
申请人： QUALCOMM INC
发明人： PERSICO CHARLES J , JAFFEE JAMES , CICCARELLI STEVEN C
IPC分类号： H04B1/26 , H03D7/16 , H03C3/40
CPC分类号： H03D7/166 , H03D7/165
摘要： In an exemplary application, an apparatus according to a disclosed embodiment receives a radio frequency signal and outputs an intermediate frequency signal. Rejection of image components in the intermediate frequency signal is obtained without the need to preprocess the radio frequency signal with an image reject filter. Such an apparatus may also exhibit an image rejection performance that is robust to frequency deviation of a local oscillator.
摘要翻译：在示例性应用中，根据所公开的实施例的装置接收射频信号并输出中频信号。获得中频信号中的图像分量的抑制，而不需要使用图像抑制滤波器对射频信号进行预处理。这种装置还可以呈现对本地振荡器的频率偏差鲁棒的图像抑制性能。

94. 发明申请

WO02096099A2 DOWN-CONVERTER 审中-公开
标题翻译：下变频器
公开(公告)号：WO02096099A2
公开(公告)日：2002-11-28
申请号：PCT/IB0201618
申请日：2002-05-08
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS CORP INTELLECTUAL PTY , BRILKA JOACHIM , HAFEMEISTER THOMAS , WELTERSBACH WOLFGANG
发明人： BRILKA JOACHIM , HAFEMEISTER THOMAS , WELTERSBACH WOLFGANG
IPC分类号： H03D7/00 , H03D7/16 , H04B1/26 , H04N5/44 , H04N5/46
CPC分类号： H04N5/4446 , H03D7/165 , H04N5/4401 , H04N5/46 , H04N21/42607
摘要： A down-converter for processing frequency signals, preferably received, particularly digital, television signals, comprising two, preferably identical mixer stages (10a, 10b) for down-converting the signal, a local oscillator (12) controlling the mixer stages by a 90 DEG phase shift, a complex filter (14) which couples the output signals of the mixer stages (10a, 10b) by means of a complex filtering method in such a way that the signal components outside a predetermined useful band are substantially suppressed, an adjusting device (13) for adjusting the frequency of the local oscillator (12) and a subsequent low-pass filter.
摘要翻译：用于处理频率信号的下变频器，优选地接收特别是数字的电视信号，包括用于下变频信号的两个优选相同的混频器级（10a，10b），将混频器级控制90°的本地振荡器 DEG相移，复数滤波器（14），其通过复数滤波方法耦合混频器级（10a，10b）的输出信号，使得基本上抑制了预定有用频带外的信号分量，调整用于调节本地振荡器（12）的频率的装置（13）和随后的低通滤波器。

95. 发明申请

WO0225807A3 WIDEBAND FAST-HOPPING RECEIVER FRONT-END AND MIXING METHOD 审中-公开
标题翻译：宽带快速接收机前端和混合方法
公开(公告)号：WO0225807A3
公开(公告)日：2002-06-20
申请号：PCT/US0127646
申请日：2001-09-07
申请人： RAYTHEON CO
发明人： LINDER LLOYD F , DEVENDORF DON C
IPC分类号： H03D7/00 , H03D7/16 , H04B1/713
CPC分类号： H03D7/165
摘要： A wideband fast-hopping receiver front-end uses direct digital synthesis (DDS) to provide quadrature LO signals (108, 110) to the front-end's mixers (100, 102). A DDS circuit (132) stores multiple digital word sequences which represent desired waveforms, and outputs desired sequence pairs to a pair of DACs (134, 136) in response to a closk signal and a command signal. The DACs convert the sequences to analog signals, which are filtered and squared as necessary to provide quadrature LO signals to the mixers. Frequency hopping is accomplished by changing the command signal, which causes a different pair of sequences to be output and the frequency of the LO signals provided to the mixers to be changed. Active image rejection is combined with DDS LO generation to provide faster frequency hopping. The front-end is combined with an ADC (180) and a communications signal processor (184) to provide a complete system, all of which can be integrated together on a common substrate.
摘要翻译：宽带快速跳频接收机前端使用直接数字合成（DDS）向前端的混频器（100,102）提供正交LO信号（108,110）。 DDS电路（132）存储代表期望波形的多个数字字序列，并且响应于闭合信号和命令信号将期望的序列对输出到一对DAC（134,136）。 DAC将序列转换为模拟信号，根据需要进行滤波和平方以向混频器提供正交LO信号。通过改变命令信号来实现跳频，这导致输出不同的序列对，并且提供给混频器的LO信号的频率被改变。主动图像抑制与DDS LO生成相结合，提供更快的跳频。前端与ADC（180）和通信信号处理器（184）组合以提供一个完整的系统，所有系统都可以集成在一个共同的基板上。

96. 发明申请

WO02037787A1 MODULATOR WITH LOW SENSITIVITY TO AMPLITUDE AND PHASE ERRORS OF THE CARRIER SIGNAL 审中-公开
标题翻译：对传感器信号的灵敏度和相位误差具有低灵敏度的调制器
公开(公告)号：WO02037787A1
公开(公告)日：2002-05-10
申请号：PCT/US2000/030406
申请日：2000-11-03
IPC分类号： H04L27/20 , H03D7/14 , H03D7/16 , H04L27/00 , H04L27/22 , H04L27/36 , H04L27/38 , H03B27/00
CPC分类号： H03C3/40 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D7/165 , H03D7/166 , H04L27/206 , H04L27/22 , H04L27/364 , H04L2027/0016
摘要： A modulator includes two modulation units and a summer (412c). Each of the first and second modulation units receives and modulates a set of carrier signals (ILO, QLO) with a set of information signals (IIN, QIN) in accordance with a particular modulation scheme to generate a respective modulated component, with the second modulated component (b) including a signal inversion relative to the first modulation component (a). The summer combines the first (a) and second (b) modulated components to generate a modulated signal. Each modulation unit can include a pair of mixers (410a, 410b; 410c, 410d) and a summer (412a; 412b). The first mixer (410a) receives and modulates an inphase carrier signal (ILO) with a first information signal (IIN). The second mixer (410b) receives and modulates a quadrature carrier signal with a second information signal (QIN). The summer (412a) receives and combines the outputs from the first and second mixers to provide the modulated component. The information signals provided to the first and second modulation units are swapped and may be inverted.
摘要翻译：调制器包括两个调制单元和一个加法器（412c）。第一和第二调制单元中的每一个根据特定调制方案接收并调制具有一组信息信号（IIN，QIN）的一组载波信号（ILO，QLO）以生成相应的调制分量，其中第二调制分量（b）包括相对于第一调制分量（a）的信号反转。夏季结合了第一（a）和第二（b）调制分量来产生调制信号。每个调制单元可以包括一对混合器（410a，410b; 410c，410d）和一个加热器（412a; 412b）。第一混频器（410a）用第一信息信号（IIN）接收并调制同相载波信号（ILO）。第二混频器（410b）接收并调制具有第二信息信号（QIN）的正交载波信号。夏天（412a）接收并组合来自第一和第二混频器的输出以提供调制分量。提供给第一和第二调制单元的信息信号被交换并且可以被反转。

97. 发明申请

WO01039385A1 IMPROVEMENTS IN OR RELATING TO POLYPHASE RECEIVERS 审中-公开
标题翻译：改善或相关于多肽接收者
公开(公告)号：WO01039385A1
公开(公告)日：2001-05-31
申请号：PCT/EP2000/010899
申请日：2000-11-02
IPC分类号： H04B1/26 , H03D3/00 , H03D7/16 , H03G7/00 , H04B1/30 , H03G3/20
CPC分类号： H03D3/008 , H03D7/165 , H03G7/001 , H04B1/30
摘要： A polyphase receiver comprises an RF front end (10 to 28) for receiving a wanted data signal modulated on a carrier signal and for producing quadrature related low IF signals, an image rejection filter formed by a polyphase filter (30) for filtering the quadrature related low IF signals, soft limiting means (36,38) for compressing the dynamic range of the filtered quadrature related IF signals and a signal demodulator (41) for recovering the data signal. The soft limiting means (36,38) has a characteristic which is substantially linear at signal levels 10dB below a predetermined minimum wanted signal level, moves into compression for higher signal levels and hard limits at substantially 10 dB above the desired receiver sensitivity which avoids degrading the sensitivity of the receiver.
摘要翻译：多相接收机包括用于接收在载波信号上调制的有用数据信号并用于产生正交相关低IF信号的RF前端（10至28），由多相滤波器（30）形成的用于滤波正交相关低IF信号，用于压缩滤波正交相关IF信号的动态范围的软限幅装置（36,38）和用于恢复数据信号的信号解调器（41）。软限制装置（36,38）具有在预定的最小有用信号电平以下10dB的信号电平处基本线性的特性，移动到压缩中以达到更高的信号电平，并且在所希望的接收机灵敏度以上10dB的强度限制，避免了降级接收机的灵敏度。

98. 发明申请

WO0001062A3 FREQUENCY OFFSET IMAGE REJECTION 审中-公开
标题翻译：频率偏移图像拒绝
公开(公告)号：WO0001062A3
公开(公告)日：2000-04-13
申请号：PCT/IB9901182
申请日：1999-06-24
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS SVENSKA AB
发明人： MOHINDRA RISHI
IPC分类号： H03D7/18 , H03D7/16
CPC分类号： H03D7/165
摘要： An approach for providing image rejection during signal down conversion involves phase shifting quadrature signals at a frequency other than the down converted center frequency. One or more phase shifters coupled to a summer/subtractor provide forty five (45) degrees and one hundred thirty five (135) degrees of phase shift with respect to two quadrature input signals. The one or more phase shifters perform the phase shifts of the quadrature input signals at a frequency other than the center frequency of the down-converted signal.
摘要翻译：在信号下变换期间提供图像抑制的方法涉及以下变频中心频率以外的频率移相正交信号。耦合到加法器/减法器的一个或多个移相器相对于两个正交输入信号提供四十五（45）度和一百三十五（135）度的相移。一个或多个移相器以除了下变频信号的中心频率之外的频率执行正交输入信号的相移。

99. 发明申请

WO00013306A1 DIRECT-CONVERSION TUNER INTEGRATED CIRCUIT FOR DIRECT BROADCAST SATELLITE TELEVISION 审中-公开
标题翻译：用于直接广播卫星电视的直接转换调谐器集成电路
公开(公告)号：WO00013306A1
公开(公告)日：2000-03-09
申请号：PCT/US1999/017312
申请日：1999-07-29
IPC分类号： H03D3/00 , H03D7/00 , H03D7/16 , H04B1/16 , H04B1/18 , H04B1/26 , H04B1/30 , H04N5/44 , H04N7/20
CPC分类号： H03D3/008 , H03D7/165 , H04B1/30 , H04N5/4401 , H04N7/20
摘要： A converter for the direct down-conversion of direct broadcast satellite signals such as those used for digital television. The direct broadcast satellite signal received from the satellite dish is amplified and then downshifted within the Low Noise Block (LNB), a subsystem contained with the satellite dish assembly, to a predetermined frequency band, typically in the L-band in the range 950 MHz to 2150 MHz. The signal is then sent via a coaxial cable to the set-top box unit located indoors, and there directly converted from the received frequency to baseband, in one embodiment by a single integrated circuit comprising a variable gain amplifier (VGA), frequency synthesizer, a quadrature generator and a plurality of mixers.
摘要翻译：用于直接下转换直接广播卫星信号的转换器，例如用于数字电视的信号。从卫星天线接收到的直播广播卫星信号被放大，然后在包含卫星天线组合件的子系统的低噪声块（LNB）内被降频到预定的频带，通常在950MHz范围内的L频带至2150 MHz。然后，该信号通过同轴电缆发送到位于室内的机顶盒单元，并且在一个实施例中，从接收到的频率直接转换为基带，单个集成电路包括可变增益放大器（VGA），频率合成器，正交发生器和多个混频器。

100. 发明申请

WO99023755A1 A LINEAR RF POWER AMPLIFIER WITH OPTICALLY ACTIVATED SWITCHES 审中-公开
标题翻译：具有光学开关的线性RF功率放大器
公开(公告)号：WO99023755A1
公开(公告)日：1999-05-14
申请号：PCT/SE1998/001862
申请日：1998-10-16
IPC分类号： H03D7/00 , H03D7/16 , H03F1/32 , H03F3/24 , H04L27/36
CPC分类号： H03F1/32 , H03D7/165 , H03F3/24 , H03F2200/421 , H04L27/362
摘要： A linear power amplifier amplifies a linear baseband signal having I and Q components. An up-converting mixer uses optically activated switches to mix the amplified baseband signal with a local oscillator signal at specified carrier frequency. The optically activated switches are activated according to a switching sequence that produces a constant impedance over each carrier frequency cycle. In this way, the optically activated switches prevent introduction of non-linearities during the up-conversion process.
摘要翻译：线性功率放大器放大具有I和Q分量的线性基带信号。上变频混频器使用光学激活的开关来将放大的基带信号与指定载波频率的本地振荡器信号混合。根据在每个载波频率周期产生恒定阻抗的切换序列激活光学激活的开关。以这种方式，光学激活的开关在上变频过程中防止引入非线性。

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