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Answer to your first question:
The termination impedance in the ADS software indicate that your block is connected to a termination/ load which has 50 ohm impedance (In ideal world for most applications you expect to see a 50 ohm impedance, that's the reason by default the termination value has...
Re: A problem in ultra-low VDD chip tesiing
Assuming you can use a external supply to source your sensor chip:
My suggestion is to try using a analog output pin of a DAQ board (example Daq boards from National Instruments)
You can generate 0.4 Volts and also since your chip draws uA of...
Hi,
If I have to supply -3 V to a circuit, can I just flip the power terminals on the power supply and expect the power supply to source current as needed to run my circuit.
By flipping I mean, connect the ground of my circuit to the positive on the power supply and connect the negative...
Hi,
I suggest the following:
To have a realistic thickness for your patch, feed line & gnd plane, consider 1 oz of copper (~1,4 mils or 0.034 mm approximately). These numbers depend upon what thickness do you specify to the PCB manufacturer while manufacturing this design. I usually use 1 oz...
I may be wrong, but I think the calculations should be as follows:
Toatal voltage supplied to the circuit = 24 V
Total resistance in the circuit = 120 + 47 = 167 ohms
Total current in the circuit should be = V/R = 24/167 = 0.1437 A
If the voltage drop across the sensor is 10V, then the current...
Few clarifications needed:
1) Does ESD protection is needed only for those instrument which are capable of doing very low frequency ranges. I do not understand the relationship between the ESD and the low frequency range of the instrument. Please elaborate on this point.
2)By good coaxial...
Try these things:
1) Measure the two grounds using your multimeter. You should expect it to be 0V ideally. See what does the measurement show you.
2) Instead of 1M ohms or 10 M ohms in between the the port 1 and port 2, put a small value resistor like may be few 1 K ohms or so. Measure port one...
Hello,
I had a small doubt regarding the Ground Strap. Why does a VNA have a ground strap, for grounding the user who uses it.
Similarly why not have a ground strap for a instrument like a Spectrum analyzer or an oscilloscope. I would like to know the purpose of having a ground strap for some...
Hi,
To help ease your confusion I would say that if your application is RF based, use of coax cables and SMA connectors will be a better than just using wires.
To put it in simple form, the signal which flows in your PCB trace needs some required impedance requirements for it to flow smoothly...
Hi,
I want to design a Rf signal generator for the Frequency range: 5GHz to 10 GHz.
I have chosen the following Ic's:
Hittite HMC587LC4B wide band VCO, which works from 5 GHz to 10 GHz.
PLL LMX2492 from Texas Instruments which is well within the frequency range.
I have designed a loop filter...
When you will be soldering SMD components, hot air may not be required.
But if you have to de-solder (remove the solder) the component, you might find the Hot air gun a handy tool. You can use the hot air to heat up the area around the component (IC) and then use solder Iron to easily remove...
Hello,
Could somebody explain how does port extension work. Does it cater to correct only the phase error or does it also correct the losses assuming the port to be extended has a 50 ohm impedance.
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