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KJ7LNW
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8 votes
2 answers
489 views

Why would you use a shared-gate multi-channel MOSFET device?

7 votes
2 answers
5k views

What is Negative Inductance?

4 votes
2 answers
550 views

Some LDO's specify noise in nV/Hz, others specify it in μV(rms). How do they equate?

3 votes
2 answers
546 views

How do you match an LDMOS FET to 50 Ohms?

3 votes
2 answers
142 views

Can VSWR be complex-valued or is it always real?

2 votes
1 answer
52 views

Which matrix index should be used when Y (admittance) is shown to compose a circuit segment mapped to an ABCD matrix? Y21? Other?

2 votes
1 answer
84 views

Can you identify this digital signal? It looks like a UART signal and can't figure out the baud rate

2 votes
1 answer
1k views

What is the difference between "Operating Voltage" and "Drain-Source Voltage" for an LDMOS FET?

2 votes
1 answer
316 views

Please Identify this adjustable inductor (ferrite-core bobbin)

2 votes
0 answers
198 views

How do you calculate phase shift induced by a shunt capacitor?

2 votes
1 answer
144 views

L-C-L vs Pi network

2 votes
2 answers
328 views

Band-pass filter vs. Serial Low-pass+High-pass filter - Is there a difference?

2 votes
0 answers
150 views

How would you design a power divider with 50-Ohm unbalanced input and 4x 100-Ohm balanced output impedances to send RF down a CAT6 cable?

2 votes
1 answer
230 views

In practice, does the order of a series RLC-shunt circuit matter?

2 votes
2 answers
327 views

How do you choose a PWM Frequency to drive a DC motor? [duplicate]

1 vote
2 answers
168 views

How does a Touchstone (s2p) file indicate whether it should pass or block DC?

1 vote
2 answers
92 views

Can an antenna be modeled as a 2-port passive network?

1 vote
2 answers
785 views

Why is the Irms so different from Isat in different power inductors?

1 vote
1 answer
76 views

What high-power anti-reflection mechanisms exist to protect amplifiers when an the antenna is disconnected?

1 vote
1 answer
141 views

Choosing an SMT capacitor size (and voltage) for high-power RF coupling at 300W

1 vote
1 answer
71 views

Can anyone identify this 40-pin SMT socket on the Silicon Labs BRD4180A board?

1 vote
3 answers
84 views

Do parallel LNAs at 90-degrees to eachother reduce the noise floor more than side-by-side?

1 vote
3 answers
265 views

How would you combine DC power, bi-directional serial data, and an RF signal on a single 50-Ohm coax feedline?

1 vote
1 answer
95 views

What is the R-C Feedback to this FET?

1 vote
1 answer
24 views

How do I EM-Extract a subcircuit and define a different em/drawing-layer than the original circuit in AWR?

1 vote
1 answer
174 views

How can I tell whether an SMT/SMD Capacitor is oriented with plates horizontal or vertical?

1 vote
1 answer
37 views

What would be the S-parameters for an "ideal" shorted transmission line?

1 vote
0 answers
38 views

How do you "calibrate" (?) a matching network to re-optimize an S11 match based on physical measurements from a VNA?

1 vote
1 answer
61 views

Can you measure or estimate antenna reflection back into freespace caused by a freespace impedance mismatch?

1 vote
1 answer
48 views

Can admittance (Y) be used to calculate reactance when L and C values are calculated from the Y12 and Y11 parameters like normal as X=XL-XC?