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
    • 3. 发明授权
    • 주파수변조신호를복조하기위한위상동기루프타입장치
    • KR100391532B1
    • 2003-11-20
    • KR1019960050729
    • 1996-10-31
    • 코닌클리케 필립스 엔.브이.
    • 레마손파스칼
    • H03L7/00
    • H03D3/241H03B5/1209H03B5/1231H03B5/1243H03B2200/0036H03B2200/0092H03B2201/02H03D2200/0019
    • The demodulator includes an oscillator which provides an output signal to a phase comparator input. The other input of the phase comparator receives the signal to be demodulated. The comparator output passes through a filter and an amplifier and is then divided between the circuit output and a feedback control voltage (Vb1, Vb2). The module has two fixed capacitor (C1,C2) and produces a variable hyperbolic capacitance as a function of the control voltage. The linear region compensates for the linear frequency response of the oscillator in a fixed frequency range. The module has a differential output transconductance amplifier (A) and a Gilbert cell (30) coupled symmetrically to the two fixed capacitors. Diodes (D1, D2) act as the amplifier output load and a voltage is produced which is applied to the Gilbert cell.
    • 解调器包括向相位比较器输入提供输出信号的振荡器。 相位比较器的另一个输入端接收要解调的信号。 比较器输出通过滤波器和放大器,然后在电路输出和反馈控制电压(Vb1,Vb2)之间进行分压。 该模块具有两个固定电容(C1,C2),并根据控制电压产生可变的双曲线电容。 线性区域补偿振荡器在固定频率范围内的线性频率响应。 该模块具有与两个固定电容器对称耦合的差分输出跨导放大器(A)和Gilbert单元(30)。 二极管(D1,D2)充当放大器输出负载并产生施加于吉尔伯特单元的电压。
    • 4. 发明公开
    • 저잡음 믹서
    • 低噪音混合器
    • KR1020080044902A
    • 2008-05-21
    • KR1020087008291
    • 2006-08-31
    • 미디어텍 인크.
    • 폴레라,라자세카르소우라티,티르다드로젠브리트,드미트리
    • H04B1/16
    • H04B1/28H03D7/1433H03D7/1441H03D7/1458H03D7/1466H03D7/165H03D2200/0019H03D2200/0084
    • A low noise mixer comprises a first mixer core configured to receive a radio frequency (RF) input signal having an RF frequency, and a first local oscillator signal, wherein the first local oscillator signal is at a frequency that is nominally twice the frequency of the RF frequency, the first mixer core configured to switch the RF input signal to at least one secondary mixer core at a frequency that coincides with the frequency of the first local oscillator signal, the at least one secondary mixer core configured to receive the switched RF input signal and a second local oscillator signal, where the second local oscillator signal is at the same nominal frequency as the RF input signal, and wherein switching the RF input signal at the frequency of the first local oscillator signal substantially eliminates flicker noise associated with the down-conversion process.
    • 低噪声混频器包括被配置为接收具有RF频率的射频(RF)输入信号和第一本地振荡器信号的第一混频器核心,其中第一本地振荡器信号的频率是标称频率为 RF频率,所述第一混频器核心被配置为以与所述第一本机振荡器信号的频率一致的频率将所述RF输入信号切换到至少一个辅助混频器内核,所述至少一个辅助混频器核心被配置为接收所述切换的RF输入 信号和第二本地振荡器信号,其中第二本机振荡器信号处于与RF输入信号相同的标称频率,并且其中以第一本地振荡器信号的频率切换RF输入信号基本上消除与下降相关联的闪烁噪声 转换过程。