Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: applying notch filter on input and output part?
Unread postPosted: Tue Jun 21, 2005 2:13 am
know that the return loss can be happen is because we design notch filter
when we design on input and output impedance parts?
Post subject: Return Loss
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.
Wed Jun 22, 2005 9:00 am
Or, depending on the frequency, use
an isolator. Similar to what was said above.