Tagged Questions
0
votes
2answers
60 views
How does less cable impedance, source/termination impedance, lead to longer cable length for higher data rates?
This question is about high speed digital transmission on a transmission line,
I need to know about how does the
(1) impedance of the transmission line and the
(2) source impedance and
(3) ...
0
votes
1answer
97 views
What is a good tolerance for impedance matching or how to calculate losses?
If you build a microstrip on a silcon wafer, connected by picoprobes via SMA connector and cables to a VNA, what is actually a good match of the impedances of the cables and the waveguide. Is there a ...
3
votes
1answer
153 views
How does the addition of a bias-t circuit affect the impedance of a transmission line?
I've got a GPS circuit where the antenna is connected directly to the GPS receiver via a coplanar waveguide designed for an impedance of 50ohms. Unfortunately, I neglected to add the bias-t circuit ...
3
votes
4answers
706 views
How to terminate 50 ohm transmission line without drawing DC
I am sending a 10 MB/sec digital data stream by amplitude moduating a infrared quantum cascade laser. The laser requires a hefty bias of about half an amp (which drops about 8.5 volts across the ...
7
votes
2answers
717 views
Is paying extra for “Controlled Impedance” boards necessary?
I'm doing a bit of RF PCB design, and one of the things that caught my eye is the "Controlled Impedance" option. Checking more boxes always costs more, so I want to know if this is worth the extra ...
5
votes
2answers
991 views
Transmission Line and capacitive effect
I am driving a digital pin with a 10Mhz signal. At the pin, the signal's rise time is slewed to 35us such that the signal is no longer a pulse but a triangular waveform that does not reach the full ...
