会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明申请
    • Up-Conversion Based on Gated Information Signal
    • 基于门控信息信号的上转换
    • US20140308909A1
    • 2014-10-16
    • US14054548
    • 2013-10-15
    • ParkerVision, Inc.
    • David F. SorrellsMichael J. BultmanRobert W. CookRobert C. LookeCharley D. Moses, JR.
    • H03D7/00H04B1/04
    • H03D7/00H03C1/62H04B1/04H04B7/12H04B2001/0491
    • A method and system is described wherein an information signal is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In a first modulation embodiment, one information signal is phase modulated onto the carrier signal as part of the up-conversion process. In a second modulation embodiment, two information signals are multiplied, and, as part of the up-conversion process, one signal is phase modulated onto the carrier and the other signal is amplitude modulated onto the carrier. In a third modulation embodiment, one information signal is phase modulated onto the “I” phase of the carrier signal as part of the up-conversion process and a second information signal is phase modulated onto the “Q” phase of the carrier as part of the up-conversion process.
    • 描述了一种方法和系统,其中信息信号以作为期望输出信号的频率的次谐波的频率门控。 在调制实施例中,作为上转换处理的一部分调制信息信号。 在第一调制实施例中,作为上转换处理的一部分,一个信息信号被相位调制到载波信号上。 在第二调制实施例中,将两个信息信号相乘,并且作为上转换处理的一部分,一个信号被相位调制到载波上,另一个信号被幅度调制到载波上。 在第三调制实施例中,一个信息信号作为上变频处理的一部分被相位调制到载波信号的“I”相上,并且第二信息信号被相位调制到载波的“Q”相,作为 上转换过程。
    • 6. 发明申请
    • Apparatus and Method of Differential IQ Frequency Up-Conversion
    • 差分IQ频率上变换的装置和方法
    • US20140233670A1
    • 2014-08-21
    • US14081501
    • 2013-11-15
    • ParkerVision, Inc.
    • David F. SorrellsMichael J. BultmanRobert W. CookRichard C. LookeCharley D. Moses, JR.Gregory S. RawlinsMichael W. Rawlins
    • H04B1/04
    • H04B1/04H03C3/40H03D3/006H03D7/00H04B1/408H04B2001/0491H04L25/03
    • A balanced transmitter up-converts I and Q baseband signals 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 I and Q baseband signals 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 I and Q baseband signals. 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.
    • 平衡发射机直接从基带到RF RF转换I和Q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I和Q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,其中每个谐波包含重建I和Q基带信号的必要信息。 根据相对于彼此相移的第一和第二控制信号执行差分采样。 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。