armadi
Newbie level 4

Hi
I'm trying to make a radio receiver and encountered a little problem. I need to match the output of my mixer with the input of my SAW filter and then the output of the SAW with an IF input.
Now I know the output impedance of mixer and the input impedance of the IF stage but the impedance of the SAW filter is not listed in the data sheet.
The centre frequency of the SAW filter is 70 MHz with a 4 MHz BW. The mixer output impedance = 520 ohm ||3.6pF and the If input impedance is ~1.8k ohm ||7.8pF.
The SAW filter datasheet is linked below.
**broken link removed**
I would very much like to know how to make a matching network for the filter when input/output impedances are not listed.
Thanks in advance for any help.
I'm trying to make a radio receiver and encountered a little problem. I need to match the output of my mixer with the input of my SAW filter and then the output of the SAW with an IF input.
Now I know the output impedance of mixer and the input impedance of the IF stage but the impedance of the SAW filter is not listed in the data sheet.
The centre frequency of the SAW filter is 70 MHz with a 4 MHz BW. The mixer output impedance = 520 ohm ||3.6pF and the If input impedance is ~1.8k ohm ||7.8pF.
The SAW filter datasheet is linked below.
**broken link removed**
I would very much like to know how to make a matching network for the filter when input/output impedances are not listed.
Thanks in advance for any help.