Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Amplifier Instability

Status
Not open for further replies.

quick.silver

Newbie level 2
Joined
Jan 14, 2011
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,294
I have tried to built an amplifier with a AT-55143 transistor at 3GHz. I performed all the stability analysis and design the circuit accordingly with DC blocks and DC feedlines. The layout was fabricated and after measurements I found that it was oscillating at 8 GHz. But infact during the stability test I found that it was unconditionally stable beyond 5 GHz (K factor). WHat could be the problem?
 

It's just a quicksilvery osc... - SCNR - ;-)

Without schematic & PCB layout nobody can help, I guess!
 

How did you do for stability analysis in system level?
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top