High-power selective signal attenuator and method of attenuation
    1.
    发明授权
    High-power selective signal attenuator and method of attenuation 有权
    大功率选择信号衰减器和衰减方法

    公开(公告)号:US06515599B1

    公开(公告)日:2003-02-04

    申请号:US09533109

    申请日:2000-03-22

    CPC classification number: H03M1/185

    Abstract: The high-power selective signal attenuator includes an attenuator attenuating analog main signals, and a first analog-to-digital converter converting output of the attenuator to digital. A digital-to-analog converter reconverts the digital output of the first ADC to analog, and a cancellor receives the main signals and the analog output from the DAC. The cancellor cancels the analog output of the DAC from the main signals to substantially eliminate high-power signals. A second ADC receives the output of the cancellor and generates a digital output. Based on the digital output, control circuitry dynamically controls the attenuation of the attenuator to prevent saturation of the second ADC and to improve information throughput.

    Abstract translation: 高功率选择信号衰减器包括衰减模拟主信号的衰减器和将衰减器的输出转换为数字的第一模数转换器。 数模转换器将第一个ADC的数字输出转换为模拟信号,一个消除器从DAC接收主要信号和模拟输出。 取消器从主信号取消DAC的模拟输出,以基本上消除大功率信号。 第二个ADC接收消除器的输出并产生数字输出。 基于数字输出,控制电路动态地控制衰减器的衰减,以防止第二ADC饱和并提高信息吞吐量。

    Cellular base station broadcast method and system
    2.
    发明授权
    Cellular base station broadcast method and system 有权
    蜂窝基站广播方式和系统

    公开(公告)号:US07039386B2

    公开(公告)日:2006-05-02

    申请号:US10124297

    申请日:2002-04-18

    Applicant: Arild Kolsrud

    Inventor: Arild Kolsrud

    Abstract: In the method, an emergency broadcast station receives report of an impending or current disaster-related situation from a local authority. The geographic area to be affected by the impending or current disaster-related situation is served by an existing communication system, such as a cellular network. The emergency broadcast station generates a signal representing an emergency broadcast message that contains a frequency of an accessible main emergency channel at the emergency broadcast station, and a priority level classifying the emergent or impending disaster-related situation. The signal is transmitted to one or base stations, each serving a plurality of users of the system, which in turn send the signal to the users. The users tune to the frequency of the channel to receive the emergency broadcast message.

    Abstract translation: 在该方法中,紧急广播电台接收到当地有关当局即将发生的或当前灾害相关情况的报告。 受现在或当前灾害相关情况影响的地理区域由现有的通信系统(如蜂窝网络)提供服务。 紧急广播电台生成表示紧急广播电台的紧急广播消息的信号,该紧急广播消息包含可接入的主应急频道的频率,以及对即将发生的或即将发生的灾害相关情况进行分类的优先级。 信号被发送到一个或基站,每个服务于系统的多个用户,该用户又将信号发送给用户。 用户调谐到频道的频率以接收紧急广播消息。

    Digital transmitter system and method
    3.
    发明授权
    Digital transmitter system and method 有权
    数字发射机系统及方法

    公开(公告)号:US06944238B2

    公开(公告)日:2005-09-13

    申请号:US09784846

    申请日:2001-02-16

    CPC classification number: H03C1/00 H04B1/04

    Abstract: A digital transmitter converts a digital signal into analog form with a digital to analog converter (DAC) and uses an analog signal image produced from the DAC to provide an analog signal at a transmission frequency and/or uses a projected analog signal image to produce analog signals for transmission. Rather than removing analog signal images with a low pass filter at the output of the DAC and/or using analog signal images and analog mixers for frequency conversion, the digital transmitter uses the analog signal images from the DAC to produce the analog signals at the desired frequency/frequencies. By setting and/or adjusting the conversion rate for the DAC and/or the digital signal frequency/frequencies, the analog signal images produced from the DAC can be positioned in the desired frequency band(s). For example, the digital transmitter can position the digital signals within non-overlapping portions of a conversion bandwidth defined as one-half the conversion rate for the DAC. When the digital signals are converted into analog form, the DAC produces analog signal images periodically repeated at multiples of one-half the conversion rate such that analog signal images are produced at the appropriate frequency band(s) for amplification and transmission.

    Abstract translation: 数字发射机将数字信号转换成模数转换器(DAC),并使用由DAC产生的模拟信号图像以传输频率提供模拟信号和/或使用投影模拟信号图像产生模拟 传输信号。 在DAC的输出端和/或使用模拟信号图像和模拟混频器进行频率转换的同时,使用低通滤波器去除模拟信号图像,而不是使用DAC的模拟信号图像来产生所需的模拟信号 频率/频率。 通过设置和/或调整DAC的转换速率和/或数字信号频率/频率,从DAC产生的模拟信号图像可以位于期望的频带内。 例如,数字发射机可以将数字信号定位在转换带宽的非重叠部分内,该转换带宽定义为DAC的转换速率的一半。 当数字信号被转换为模拟形式时,DAC产生以转换速率的一半的倍数周期性地重复的模拟信号图像,使得模拟信号图像以适当的频带产生用于放大和传输。

    Electronically variable power control in microstrip line fed antenna
systems
    4.
    发明授权
    Electronically variable power control in microstrip line fed antenna systems 有权
    微带线馈电天线系统中的电子可变功率控制

    公开(公告)号:US6140967A

    公开(公告)日:2000-10-31

    申请号:US141569

    申请日:1998-08-27

    Applicant: Arild Kolsrud

    Inventor: Arild Kolsrud

    CPC classification number: H01Q1/38 H01Q13/10 H01Q9/045 H01Q9/0457

    Abstract: A microstrip feeds a patch antenna through a slot in a two part RF ground plane. The dual RF ground planes permit DC control of a varactor positioned over a slot in the ground planes while maintaining a high degree of AC coupling between the two planes. The AC coupling between the two ground planes is increased by increasing the capacitive coupling between the planes using an interlocking finger pattern.

    Abstract translation: 微带馈线贴片天线通过两部分射频接地平面中的插槽。 双RF接地平面允许位于接地平面上的槽上的变容二极管的DC控制,同时保持两个平面之间的高度AC耦合。 通过使用互锁手指图案增加平面之间的电容耦合来增加两个接地层之间的AC耦合。

    Receiver system using analog to digital conversion at radio frequency and method
    5.
    发明授权
    Receiver system using analog to digital conversion at radio frequency and method 有权
    接收机系统采用模数转换射频和方法

    公开(公告)号:US06678512B1

    公开(公告)日:2004-01-13

    申请号:US09548995

    申请日:2000-04-14

    CPC classification number: H04B1/406 H04B1/28

    Abstract: A receiver receives analog signals at radio frequency (RF), and the RF analog signals are converted into the digital domain. As such, the receiver does not require frequency conversion stage(s) prior to analog to digital conversion. For example, the receiver can comprise at least one antenna(s) which receives radio frequency (RF) analog signals at different frequency bands. The analog RF signals are provided to a single analog to digital (A/D) converter, and the A/D converter converts the analog RF signals at the different frequency bands into digital signals within the Nyquist bandwidth. By properly selecting the sampling rate of the A/D converter for the RF analog signals, the A/D converter can produce replicas of the different frequency bands of the analog signals in non-overlapping portions of the Nyquist bandwidth.

    Abstract translation: 接收机以射频(RF)接收模拟信号,并将RF模拟信号转换成数字域。 因此,接收机在模数转换之前不需要频率转换阶段。 例如,接收机可以包括在不同频带接收射频(RF)模拟信号的至少一个天线。 模拟RF信号被提供给单个模数(A / D)转换器,并且A / D转换器将不同频带处的模拟RF信号转换成奈奎斯特带宽内的数字信号。 通过适当地选择用于RF模拟信号的A / D转换器的采样率,A / D转换器可以在奈奎斯特带宽的非重叠部分产生模拟信号的不同频带的副本。

    Method and apparatus for performing analog-to-digital conversion using previous signal sample(s)
    6.
    发明授权
    Method and apparatus for performing analog-to-digital conversion using previous signal sample(s) 有权
    使用先前信号样本进行模数转换的方法和装置

    公开(公告)号:US06542101B1

    公开(公告)日:2003-04-01

    申请号:US09616158

    申请日:2000-07-14

    Applicant: Arild Kolsrud

    Inventor: Arild Kolsrud

    CPC classification number: H03M1/18

    Abstract: An analog to digital conversion (A/D) system produces a corrected output of an analog to digital (A/D) converter using at least one past signal sample. For example, the A/D system estimates a reference value or point, such as a reference amplitude, for the at least one past sample. In response to an indication that the A/D converter is saturated, the A/D system uses the reference value to predict a next reference value, such as a next amplitude value, from which a corrected digital sample value is produced to replace the saturating sample.

    Abstract translation: 模数转换(A / D)系统使用至少一个过去的信号样本产生模数(A / D)转换器的校正输出。 例如,A / D系统估计至少一个过去样本的参考值或点,例如参考幅度。 响应于A / D转换器饱和的指示,A / D系统使用参考值来预测下一个参考值,例如下一个幅度值,从其产生校正的数字采样值以代替饱和度 样品。

    Method and apparatus for analog-to-digital conversion using attenuated analog signals
    7.
    发明授权
    Method and apparatus for analog-to-digital conversion using attenuated analog signals 有权
    使用衰减模拟信号进行模数转换的方法和装置

    公开(公告)号:US06377196B1

    公开(公告)日:2002-04-23

    申请号:US09616759

    申请日:2000-07-14

    CPC classification number: H03M1/187

    Abstract: An analog-to-digital (A/D) converter system which converts an attenuated analog input signal into a digital value and shifts the position of the digital value within the digital output depending on the attenuation of the analog input signal. For example, in response to an analog input signal which saturates a first A/D converter, a second A/D converter receives and converts an attenuated analog input signal, and the output of the second A/D converter is used to produce the more significant bits of the digital output value to convert a higher amplitude range (power or voltage level range) for the analog input signal. In another example, a level detector can detect the amplitude of the analog input signal and provide an indication of the amplitude of the analog input signal. In response, the analog input signal is attenuated and provided to an A/D converter. The A/D converter converts the attenuated analog input signal and produces a digital value as the bits of the digital output where the position of the digital value within the digital output depends on the attenuation of the analog input signal.

    Abstract translation: 一种模拟数字(A / D)转换器系统,其将衰减的模拟输入信号转换为数字值,并根据模拟输入信号的衰减将数字输出中的数字值的位置移位。 例如,响应于使第一A / D转换器饱和的模拟输入信号,第二A / D转换器接收并转换衰减的模拟输入信号,并且使用第二A / D转换器的输出产生更多 数字输出值的有效位转换为模拟输入信号的较高幅度范围(功率或电压电平范围)。 在另一示例中,电平检测器可以检测模拟输入信号的幅度并且提供模拟输入信号的幅度的指示。 作为响应,模拟输入信号被衰减并提供给A / D转换器。 A / D转换器转换衰减的模拟输入信号,并产生数字值作为数字输出的位,数字输出中数字值的位置取决于模拟输入信号的衰减。

    Band edge amplitude reduction system and method
    8.
    发明授权
    Band edge amplitude reduction system and method 有权
    带边减幅系统及方法

    公开(公告)号:US07181184B1

    公开(公告)日:2007-02-20

    申请号:US09643647

    申请日:2000-08-22

    CPC classification number: H04B1/1036

    Abstract: A band edge amplitude reduction system changes the filtering characteristics of a receiver based on the amplitude of signal(s) adjacent to an edge of the operating band of the receiver and/or of signals not under the power control of the receiver. For example, the receiver measures the power level over a bandwidth at the band edges of the operating band of the receiver. If the signals adjacent to the operating band are strong enough relative to the signal power within the operating band, overload protection circuitry changes the filtering characteristics of the receiver to improve the attenuation of the signal(s) from the adjacent band(s). In certain embodiments, the overload protection circuitry switches in filter(s) with a narrower bandwidth to attenuate the signal(s) from adjacent band(s) at the edge(s) of the operating band of the receiver, thereby preventing interference with or the overload of the receiver by signals from outside the operating band and/or not under the power control of the receiver.

    Abstract translation: 基带边缘幅度降低系统基于与接收机的工作频带的边缘相邻的信号的幅度和/或不在接收机的功率控制下的信号来改变接收机的滤波特性。 例如,接收机在接收机的工作频带的边缘处的带宽上测量功率电平。 如果与工作频带相邻的信号相对于工作频带内的信号功率足够强,则过载保护电路改变接收机的滤波特性,以改善来自相邻频带的信号的衰减。 在某些实施例中,过载保护电路以较窄的带宽切换滤波器以衰减来自接收器的工作频带边缘的相邻频带的信号,从而防止干扰或 通过来自工作频带外部的信号和/或不在接收机的功率控制下的接收机的过载。

    Multiple branch receiver system and method
    9.
    发明授权
    Multiple branch receiver system and method 有权
    多分支接收机系统及方法

    公开(公告)号:US06574459B1

    公开(公告)日:2003-06-03

    申请号:US09549919

    申请日:2000-04-14

    CPC classification number: H04B7/084

    Abstract: A receiver provides received analog signals to a plurality of channel branches, and on at least one of the channel branches, the frequency of the received analog signals is adjusted independent of the relative positions of the corresponding analog signals in the radio frequency (RF) spectrum. The analog signals on the channel branches are then combined, and the combined analog signals are converted into the digital domain. For example, the receiver comprises at least one antenna(s) which receives radio frequency (RF) analog signals. A channel branch arranger receives the analog RF signals from the antenna(s) and provides the RF analog signals to a plurality of channel branches. A frequency conversion arrangement comprising at least one frequency converter on at least a respective one of the channel branches adjusts the frequency band of the analog RF signals on the respective channel branch independent of the relative positions of the corresponding analog signals in the RF spectrum of the different channel branches. The analog signals on the channel branches are combined, and a single analog to digital converter converts the combined analog signals into digital signals. In converting the composite analog signals into the digital domain, the frequency bands of the analog signals are positioned in a plurality of Nyquist zone channels in the digital domain. By properly selecting the frequency bands for the analog signals on the channel branches and the sampling rate for the A/D converter, the available bandwidth for the A/D converter can be more efficiently used, and/or time coherence and/or phase coherence can be provided.

    Abstract translation: 接收机将接收到的模拟信号提供给多个信道分支,并且在至少一个信道分支上,接收的模拟信号的频率被调整为独立于射频(RF)频谱中对应的模拟信号的相对位置 。 然后组合通道分支上的模拟信号,并将组合的模拟信号转换为数字域。 例如,接收机包括接收射频(RF)模拟信号的至少一个天线。 信道分支编排器从天线接收模拟RF信号,并将RF模拟信号提供给多个信道分支。 在至少相应的一个信道分支上包括至少一个频率转换器的频率转换装置在相应的信道支路上调整模拟RF信号的频带,而与相应模拟信号在RF频谱中的相对位置无关 不同的渠道分支。 信道分支上的模拟信号被组合,单个模数转换器将组合的模拟信号转换为数字信号。 在将复合模拟信号转换成数字域时,模拟信号的频带位于数字域中的多个奈奎斯特频道中。 通过适当选择信道分支上的模拟信号的频带和A / D转换器的采样率,可以更有效地使用A / D转换器的可用带宽和/或时间相干和/或相位相干 可以提供。

    Filter including a microstrip antenna and a frequency selective surface
    10.
    发明授权
    Filter including a microstrip antenna and a frequency selective surface 失效
    滤波器包括微带天线和频率选择表面

    公开(公告)号:US6147572A

    公开(公告)日:2000-11-14

    申请号:US115690

    申请日:1998-07-15

    Abstract: A filter including an enclosure, a dielectric material within the enclosure, at least two microstrip antennas within the enclosure, and at least one frequency selective surface including a metallic pattern. The frequency selective surface is utilized to filter an electromagnetic signal propagated within the enclosure. The geometry of the antennas and the frequency selective surfaces as well as the resonant frequencies of the frequency selective surfaces determine whether the filter is a bandpass, bandstop, notched, or combination filter. If the frequency selective surface is omitted, the combination acts as a delay circuit for delaying the electromagnetic signal, where the time delay is a function of the dielectric constant of the dielectric material.

    Abstract translation: 一种过滤器,包括外壳,外壳内的电介质材料,外壳内的至少两个微带天线,以及包括金属图案的至少一个频率选择表面。 频率选择表面用于过滤在外壳内传播的电磁信号。 天线的几何形状和频率选择表面以及频率选择表面的谐振频率确定滤波器是带通,带阻,有缺口或组合滤波器。 如果省略频率选择表面,则该组合用作用于延迟电磁信号的延迟电路,其中时间延迟是介电材料的介电常数的函数。

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