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    • 1. 发明授权
    • Switched coupler type digital phase shifter using quadrature generator
    • 使用正交发生器的开关耦合器型数字移相器
    • US06985049B2
    • 2006-01-10
    • US10716571
    • 2003-11-18
    • Chang Hee HyoungSung Weon KangYun Tae Kim
    • Chang Hee HyoungSung Weon KangYun Tae Kim
    • H01P1/18
    • H03H11/22H01P1/185
    • A switched coupler type digital phase shifter using a quadrature generator is disclosed. A switched coupler type digital phase shifter includes: a coupling unit for receiving one input signal and generating a first signal and a second signal having 180 degree phase difference based on the received input signal; a quadrature signal generation unit for generating a third signal to a sixth signal having 90 degree phase difference to each other based on the first signal and the second signal outputted from the coupling unit; and a switching unit for selectively outputting one of the third signal to the sixth signal outputted from the quadrate signal generation unit in response to a control signal. The present invention can increased integration of the multi-bit digital phase shifter by implementing multi bit phase variant with only one phase shifter. Also, the insertion loss can be minimized.
    • 公开了一种使用正交发生器的开关耦合器型数字移相器。 开关耦合器型数字移相器包括:耦合单元,用于接收一个输入信号并产生第一信号和基于所接收的输入信号具有180度相位差的第二信号; 正交信号产生单元,用于根据从耦合单元输出的第一信号和第二信号,产生第三信号至具有彼此具有90度相位差的第六信号; 以及切换单元,用于响应于控制信号,选择性地将第三信号中的一个输出到从正方形信号产生单元输出的第六信号。 本发明可以通过仅使用一个移相器实现多位相位变型来增加多位数字移相器的集成。 此外,插入损耗可以最小化。