I bought a product from your company called SR4C033
And I measured the product after making a PCB using a program called CST.
But in your company DataSheet, the frequency band used is 791 – 960MHz, whereas the resonant frequency when actually measured is around 600Mhz.
So I have a few questions
1. The PCB board on which the product SR4C033 is mounted uses fr4 as the board, so can you tell me about the substrate of the Reference Board you are selling??
2. The size of the PCB I made is 32*28mm, but in the datasheet you provided, the reference board is 115*35mm
If the board size gets smaller, will the resonance frequency change?