I want to use si4463 at 433Mhz for communication terminal module,I am a novice,could you give me some design reference for 4463 at 433Mhz?
You can use the following reference design:
Although it is developed for 460 MHz, but will have similar performance at 433 MHz, since the 2 frequencies are quite close to each other.
OK,Thanks a lot!
I have another question ,the first is the pcb board is necessary 4 layers? I wonder that it would affect to design 2 layers.The other is that what do I need to adjust component value will influence the output frequency at 433MHZ?
Thanks for your reply.
The answers for your questions:
1. It is not necessary to have the same number of layers, but it is necessary to have a similar layer stackup. The distance between the top and first inner (ground) layer determines the parasitic capacitance towards the ground, which plays a significant part in the matching network. If you use a 2-layer PCB, the detuning of the matching network from its optimal form is possible, and in that case slight fine tuning of the component values might be necessary. Note, that the effect is stronger as the frequency is higher, so in your case there is a good chance that only minor detuning will occur.
2. There is no need for component value modification if you use the same layer stackup, the performance will be similar at 434 MHz and 460 MHz.
Thanks for your reply.I will try to refer to your suggestion~