公开(公告)号：US20150263670A1

公开(公告)日：2015-09-17

申请号：US14203572

申请日：2014-03-11

申请人： Uniband Electronic Corp.

发明人： Yiping Fan ,  Chun-Yuan Lin ,  Sheng-Wei Chiang ,  Yi-Chun Lu

IPC分类号： H03B5/12

CPC分类号： H03B5/1206 ,  H03B5/1228 ,  H03B5/1243 ,  H03C3/0916 ,  H03C3/0941 ,  H03C3/0958 ,  H03C3/0975

摘要： A two path direct frequency modulation system is disclosed. The system includes a Varactor, a voltage-controlled oscillator (VCO) calibration capacitor bank including a first plurality of switchable capacitors, and a frequency deviation capacitor bank including a second plurality of switchable capacitors. The method includes switching on or off a number of the first plurality of switchable capacitors to obtain a desired frequency band and determining number of cycles within a first predetermined time to obtain a first count, switching on or off a number of the first plurality of switchable capacitors or of the second plurality of switchable capacitors to change the desired frequency band and determining number of cycles within a second predetermined time to obtain a second count, and modulating a data signal by switching on or off a switchable capacitors of the second plurality of switchable capacitors according to the first and the second count.

摘要翻译： 公开了一种双路直接调频系统。 该系统包括Varactor，包括第一多个可切换电容器的压控振荡器（VCO）校准电容器组，以及包括第二多个可切换电容器的频偏电容器组。 该方法包括：接通或关闭第一多个可切换电容器的数量以获得期望的频带，并且确定在第一预定时间内的周期数以获得第一计数，接通或关闭第一多个可切换电容器 电容器或第二多个可切换电容器，以改变期望的频带并确定在第二预定时间内的周期数以获得第二计数，以及通过接通或关闭第二多个可切换电容器的可切换电容器来调制数据信号 电容器根据第一和第二计数。