Dear Friends,
I have few questions need to ask. I am using SAW resonator, 330MHz, with PCB design antenna.
Below is the schematic diagram:
With the same circuit, I have tested with 315MHz and 330MHz.
Below are components used for 315MHz:
L1=22nH, C1=3pF, C2=15pF, R1=100R, RF bypass=100pF, R3=0R, R1=3K9, transistor=2SC4226.
Then I used a RF receiver tester, the 7-segments display kept on showing the frequency within the range 314.5MHZ~315MHz, for non-stop.
After that I switch the saw frequency to 330MHz, below are components value for 330MHz:
L1=22nH, C1=2pF, C2=8.1pF, RF bypass=100pF, R3=0R, R1=3K9, transistor=2SC4226.
When I used a RF receiver tester, the frequency did not shows 330MHz and display has no response when I kept on pressing transmit button.
So my question is what are the component values for L1, C1 and C2 if I would like to transmit 330MHz signal?
Thanks.
I have few questions need to ask. I am using SAW resonator, 330MHz, with PCB design antenna.
Below is the schematic diagram:
With the same circuit, I have tested with 315MHz and 330MHz.
Below are components used for 315MHz:
L1=22nH, C1=3pF, C2=15pF, R1=100R, RF bypass=100pF, R3=0R, R1=3K9, transistor=2SC4226.
Then I used a RF receiver tester, the 7-segments display kept on showing the frequency within the range 314.5MHZ~315MHz, for non-stop.
After that I switch the saw frequency to 330MHz, below are components value for 330MHz:
L1=22nH, C1=2pF, C2=8.1pF, RF bypass=100pF, R3=0R, R1=3K9, transistor=2SC4226.
When I used a RF receiver tester, the frequency did not shows 330MHz and display has no response when I kept on pressing transmit button.
So my question is what are the component values for L1, C1 and C2 if I would like to transmit 330MHz signal?
Thanks.