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correct size of the LPF

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radium98

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Hello i wish all the board a merry christmas

i need some help regarding if someone have the correct PCB size or and original one .
i need to me this lpf filter please need the correct size if possible
thanks .
elenos low pass filter
 

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  • pcb (1).jpg
    pcb (1).jpg
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Looks OK to me but:

1. no mounting holes - if this is a single PCB, how do you hold it in place?
2. no provision for making input and output connections.
3. 54pF is not a standard capacitor value, if you intend making it from two 27pF capacitors in parallel, check there is sufficient space for them.

Brian.
 
You should have appended the more interesting pictures

pcb1.jpg schema.jpg

In addition to betwixt's comments. If assembled on a single layer PCB, C150 "sees" a different ground than C149 and C151. The stop band attenuation will be not as good as the ideal transfer characteristic promises.
 
and what about the pcb size in mm ? that is my question indeed, thanks.
 

As small as possible, large enough to fit coils with given dimension.
 
i cannot imagine how much in mm ,i will try .to make the coil first ,look i will only have to put about 50watts only because i dont have atc ,and just for filtering with aid of a vna later
 

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