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applying notch filter on input and output part? - RF Cafe Forums
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ngks
Post subject: applying notch filter on input and output part?
Unread postPosted: Tue Jun 21, 2005 2:13 am
Thanks!! Anybody
know that the return loss can be happen is because we design notch filter
when we design on input and output impedance parts?
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guest
Post subject: Return Loss
Unread postPosted:
Tue Jun 21, 2005 2:30 pm
Energy applied to any physical two-port
device made from inductors, capacitors, and transmission lines can only
go two places - through the device to the other port, or be reflected
back from the device.
Energy which doesn't go through the device
must therefore be reflected. Reflected energy reduces the return loss.
The only solution is to dissipate the energy in an attached resistance.
This is usually done by paralleling a filter with its complement and
terminating the complement with a resistor with eough power handling
capability to take care of all the stopband power.
Good Luck!
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Guest
Post subject:
Unread postPosted:
Wed Jun 22, 2005 9:00 am
Or, depending on the frequency, use
an isolator. Similar to what was said above.
Posted 11/12/2012
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