Use of ceramic substrate for Antenna Design

Is Al2O3 or any other ceramic substrate good enough to design a Antenna at 433 Mhz ? can we obtain it practically?

It s good, low loss probably. But why do you want to use it? It adds cost, difficult to work. FR4 works pretty god at such low frequency. Air works even better as dielectric. Costs nothing. This is your second message about 433MHz antennas. You need to formulate requirements for yourself. Which parameter is most critical? And go from there.
What project is it for - commercial?

Looks like a follow-up of your previous thread https://www.edaboard.com/thread358954.html

As already reported, "chip" antennas on ceramic substrate are commercially available, in so far it's surely possible. Al2O3 in particular is suited for RF, the said antennas are probably using substrates with higher permittivity.

If you look for high permittivity and Al2O3 is sufficient, you could also think about high Er PCB substrate like Rogers RO3210.

Yes AndrewG its for too make a commercial and i want to mount on a metal and size is also constraint for me as in my previous thread it should be 50x50mm. patch would do well for me so i'm strcuk in this stuff how to go about ...!



Thnks FvM , Yes even ROGERS substrate would do good but size will be more than 50x50mm theoretically!