bags
Newbie level 3
I designed a local oscillator with a frequency of 380 MHz. but I have a problem with implementation on the pcb. I tested my circuit using a spectrum analyzer signal hound 4ghz, but it didn't show output. I need an explanation about my oscillator circuit scheme and its implementation on the pcb.
I use multisims and ADS applications for simulation. I use 2 types of transistors, BFP 420 and MPSH10.
and i build air core inductor with 4 turn and 1mm wire diameter for 12nh and 6 turn for 100nh
4 turn
6 turn
ADS simulation
pcb layout (i forget to mirror)
PCB circuit
circuit
multisim simulation
PS
is it necessary for the amplifier buffer after the oscillator?
I use multisims and ADS applications for simulation. I use 2 types of transistors, BFP 420 and MPSH10.
and i build air core inductor with 4 turn and 1mm wire diameter for 12nh and 6 turn for 100nh
4 turn
6 turn
ADS simulation
pcb layout (i forget to mirror)
PCB circuit
circuit
multisim simulation
PS
is it necessary for the amplifier buffer after the oscillator?