Thin Film Resistors for Broad band Applications
Since i am beginner and in the learning stage. Seeking some guidance from u Expertise.
Always Thankful.
The large resistors can't be considered as lumped elements at these frequencies, so you'll model it as distributed resistor films on a substrate, e.g. Al2O3. Take care that the resistors are suited for microwave by not having excessive calibration cuts.
I am in a dilemma that for this high frequency design if i use distributed resistors it will create parasitic effects at the terminals(1206,0805). And if i use thin film resistors as lumped resistors . So are they modelled during simulation prior to fabrication . I mean i have no basic idea searching. please provide me some idea.
16 ghz? 0402, and try to find some that do NOT have wrap around metallization at both ends! too much capacitance.
http://www.ims-resistors.com/RCX_Partial_Wraps.pdf
For those microwave frequencies, whatever resistors you use, to reduce the parasitic inductance a good option is to place 2 or 3 resistors in parallel (on top of each other).
Doing this, always I got better frequency response at high frequencies.
Seems the link to the IMS RCX partial wraps is broken, found a link to the datasheet http://ims-resistors.com/rcx-pw-series-resistors/