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.

Register Log in

Why it isn't necessary to do output matching

Status
Not open for further replies.
M

MK28

Advanced Member level 4
Joined
Mar 7, 2005
Messages
119
Helped
10
Reputation
20
Reaction score
7
Trophy points
1,298
Activity points
2,120
hello all, it might be a very simple question but can anyone tell """ why it is not necessary to do output matching e.g LNA to consequent block when it comes to an IC design ?"""""

what is the main reason ?
 

Re: matching

MK28 said:
hello all, it might be a very simple question but can anyone tell """ why it is not necessary to do output matching e.g LNA to consequent block when it comes to an IC design ?"""""

what is the main reason ?
Click to expand...

Can u expand ur questions, i mean that u r asking why LNA does't require output matching when it is IC form, right ????
If so than...
In LNA we do matching for input noise therefore we don't need at the output matching.
 

Re: matching

I guess your question may be why in IC do not need 50om match.

Becauset in IC we can define the resister between stages.
 

Re: matching

it 's ordinary to not doning matching between LNA & the next block [Mixer or Image Reject filter or whatever ] since they all on same CHIP .
i.e. small interconnect between them ---Electical Voltage or Current rather than
power matching &E & H of microwave propagation :cry:

Matching required for long distance orhigh frequency when interconnects are comparable to lambda the wavelength of the wave .at this moment we deal with wave and power signal rather than electrical signal

that 's my knowledge ihope it helps you
 

matching

50 ohm matching is for interfacing with PCB.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top