Questions tagged [tuning]
The tuning tag has no usage guidance.
-2
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1answer
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My antenna tuning component values worked on a fresh board previously. Now they're not working. What could be causing this?
This is one of those hardware questions that's making me bang my head against a wall.
About six weeks ago I spent a day tuning the NFC antenna on my board. I ended up using ~71pF of shunt capacitance ...
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Finding the gain difference for a ultrasonic assembly
I am tuning an ultrasonic assembly for a welding application and tuned the system to operate at 41kHz according to the oscilloscope. The transducer operates at 40kHz, when calculating the gain with ...
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71 views
How does this double-tuned antenna work?
I am trying to understand how the attached circuit works, for tuning a transmission/receiver antenna (L1) for double frequency (HF, 500 MHz on the left output and 202 MHz LF right), to be used in ...
2
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1answer
55 views
Where to connect the VNA during matching network tuning
I'm trying to design the matching network between an antenna and its transmitter, running at 868MHz, as shown below. There's probably about 20mm between the transmitter output and the Pi network.
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33 views
MOSFET Switch for Tuned LC Tank
I am trying to implement the circuit as shown below.
I essentially want to be able to control the gate voltage of the NMOS to change the resonant frequency from 5GHz to 2.5GHz. For a transistor size ...
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0answers
113 views
Magic Eye Tuning Tube Variable Negative Voltage
I am thinking about several applications of magic eye tuning tubes as display pieces and had a question about their operation. I have attached a sample circuit from a datasheet for an EM84 tube. I ...
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1answer
66 views
Some questions regarding impedance matching and tuning
For maximum power transfer in a circuit impedance matching is performed:
Similarly from the transmitter antenna to the receiver/load one can think the total impedance from antenna to the receiver as ...
