05907422 is referenced by 9 patents and cites 3 patents.

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.

Title
Universal optical signal receiver
Application Number
430893
Publication Number
5907422
Application Date
January 6, 1997
Publication Date
May 25, 1999
Inventor
Yong Cheng Tu
Santa Clara
CA, US
Peter Wang
Sunnyvale
CA, US
Chun Meng Su
Moraga
CA, US
Yue Syan Jou
San Jose
CA, US
Ching Ho
San Jose
CA, US
Agent
Robert P Sabath
Assignee
Qualop Systems
CA, US
IPC
H04B 10/06
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