ranran19870222
Newbie level 6
Hi all!
I am trying to test a VCO chip. The output spectrum is not clean and seems to get modulated with a bandwidth of 20MHz (shown in the figure). Kvco is pretty high about 1.6GHz/V and it matches the simulation. Has anyone seen this before? Is it due to the reason that my supply is not clean or it is because of something else? It is my first time testing a chip so any suggestion will be highly appreciated!
Faye
I am trying to test a VCO chip. The output spectrum is not clean and seems to get modulated with a bandwidth of 20MHz (shown in the figure). Kvco is pretty high about 1.6GHz/V and it matches the simulation. Has anyone seen this before? Is it due to the reason that my supply is not clean or it is because of something else? It is my first time testing a chip so any suggestion will be highly appreciated!
Faye