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.

[SOLVED] Zener Diodes (clipping schematic) on a 50 ohm matched RF circuit

Status
Not open for further replies.

LandLack

Member level 3
Joined
Aug 8, 2013
Messages
54
Helped
1
Reputation
2
Reaction score
1
Trophy points
8
Activity points
526
Hi, I need to use two zener diodes on this configuration (https://en.wikipedia.org/wiki/Clipper_(electronics)) on the output of a 50 ohm matched RF circuit (1.4 GHz is the biggest signal frequency). Is there any issue? Do I need to match the diodes? How, and how much?
Can you give me an example?
Thanks,

Best Regards,
LandLack
 

FANT

Advanced Member level 1
Joined
Feb 27, 2002
Messages
416
Helped
52
Reputation
104
Reaction score
37
Trophy points
1,308
Location
Italy
Activity points
3,661
The capacitance of the two diodes will be so high that they will act as a short for GHz frequencies.

Sorry.

Mandi
 

LandLack

Member level 3
Joined
Aug 8, 2013
Messages
54
Helped
1
Reputation
2
Reaction score
1
Trophy points
8
Activity points
526
This makes the situation complicated; Thank you very much, you've avoided me a lot of problems.
Since I saw a circuit which used diodes as envelope detectors for the RF frequencies signals, I thought that zeners would also be ok. Can you tell me what parameter to see to judge diodes?
Also, do you have some ideas to clip RF signals?

Best Regards,
LandLack
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top