公开(公告)号：US5907422A

公开(公告)日：1999-05-25

申请号：US779204

申请日：1997-01-06

Applicant: Ching Ho ,  Yue-Syan Jou ,  Chun-Meng Su ,  Peter Wang ,  Yong Cheng Tu

Inventor： Ching Ho ,  Yue-Syan Jou ,  Chun-Meng Su ,  Peter Wang ,  Yong Cheng Tu

IPC: H04B10/158 ,  H04B10/06

CPC classification number: H04B10/6931

Abstract: An optical receiver communication system converts optical signals modulated by analog or digital waveforms to RF signals. The optical receiver contains an automatic level control circuit to adjust the electronic gain of the system across a broad bandwidth spectrum. Two impedance matching circuits are designed using broad band matching technique to expand the bandwidth for increasing the maximum receivable frequencies to 1 GHz. A RLC impedance matching circuit forms a resonant combination to maintain .+-.1 dB fluctuation between the low-and-high-frequency limits of the bandwidth, and a 75.OMEGA. impedance matching circuit creates a 180.degree. phase shift between outgoing and incoming signals to ensure low return loss.

Abstract translation: 光接收机通信系统将由模拟或数字波形调制的光信号转换为RF信号。 光接收器包含一个自动电平控制电路，用于在宽带宽频谱上调整系统的电子增益。 使用宽带匹配技术设计两个阻抗匹配电路，以扩大带宽以将最大可接收频率增加到1GHz。 RLC阻抗匹配电路形成谐振组合，以在带宽的低频和高频极限之间保持+/- 1dB的波动，并且75个OMEGA阻抗匹配电路在输出和输入信号之间产生180°的相移 确保低回报损失。

公开(公告)号：US5745276A

公开(公告)日：1998-04-28

申请号：US430893

申请日：1995-04-27

Applicant: Ching Ho ,  Yue-Syan Jou ,  Chun-Meng Su ,  Peter Wang ,  Yong Cheng Tu

Inventor： Ching Ho ,  Yue-Syan Jou ,  Chun-Meng Su ,  Peter Wang ,  Yong Cheng Tu

IPC: H04B10/158 ,  H04B10/06

CPC classification number: H04B10/6931

Abstract: An optical receiver communication system converts optical signals modulated by analog or digital waveforms to RF signals. The optical receiver contains an automatic level control circuit to adjust the electronic gain of the system accordingly across a broad bandwidth spectrum. Two impedance matching circuit are designed using broad band matching technique to expand the bandwidth for increasing the maximum receivable frequency to 1 GHz. A RLC impedance matching circuit forms a resonant combination to maintain .+-.1 dB fluctuation between the low-and high-frequency limits of the bandwidth, and a 75 .OMEGA. impedance matching circuit creates a 180.degree. phase shift between the outgoing and the incoming signal for low return loss.

Abstract translation: 光接收机通信系统将由模拟或数字波形调制的光信号转换为RF信号。 光接收器包含一个自动电平控制电路，用于在宽带宽频谱上相应地调整系统的电子增益。 使用宽带匹配技术设计两个阻抗匹配电路，以扩大带宽，将最大可接收频率增加到1 GHz。 RLC阻抗匹配电路形成谐振组合，以在带宽的低频和高频极限之间保持+/- 1dB的波动，并且75欧米茄阻抗匹配电路在输出和输入信号之间产生180°的相移 低回报损失。