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Type: Posts; User: pancho_hideboo

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1. ## Thread: nport primitive and VerilogA

by pancho_hideboo
Replies
13
Views
506

### Closed: Re: nport primitive and VerilogA

You can not understand anything regarding unidirectional and bidirectional at all.

And you must not use formulation based on s-parameter, since you can not understand s-parameter.

Still you can...
2. ## Thread: nport primitive and VerilogA

by pancho_hideboo
Replies
13
Views
506

### Closed: Re: nport primitive and VerilogA

Consider block diagram not verilog-A.
That’s all.

BTW, can you surely understand unidirectional model and bidirectional model ?
3. ## Thread: nport primitive and VerilogA

by pancho_hideboo
Replies
13
Views
506

### Closed: Re: nport primitive and VerilogA

Verilog-A has no relation at all.
Simply you are very lack of knowledge of very basic linear circuit theory.

Circuit which is substituted by nport has no direct relation to any of z,y, s.

It...

by pancho_hideboo
Replies
11
Views
531

Confirm whether model file surely include statistical descriptions.
5. ## Thread: nport primitive and VerilogA

by pancho_hideboo
Replies
13
Views
506

### Closed: Re: nport primitive and VerilogA

Surely understand nport.
nport can work as any of Z,Y,H,F,S matrix even if file of nport is S-parameter.

Surely learn very basic linear circuit theory before EDA Tool Play.
6. ## Thread: nport primitive and VerilogA

by pancho_hideboo
Replies
13
Views
506

### Closed: Re: nport primitive and VerilogA

No.
Surely learn a definition of S-parameters.

You have to calculate a1,a2,b1,b2 from s11,s12,s21,s22.
That’s all.

It seems you can not understand S-parameter at all as same as many people in...

by pancho_hideboo
Replies
15
Views
1,182

### Closed: Re: Question about RF power meter

No.
Frequency bands can be defined for them, although they are not practical values.
8. ## Thread: nport primitive and VerilogA

by pancho_hideboo
Replies
13
Views
506

### Closed: Re: nport primitive and VerilogA

Simply you can not understand S-parameter at all.

You ignore current. It results in ignorering impedance.
Can you understand energy conservative model and signal flow model ?
9. ## Thread: nport primitive and VerilogA

by pancho_hideboo
Replies
13
Views
506

### Closed: Re: nport primitive and VerilogA

No.

Simply you have mistakes in Verilog-A code or/and Netlist.

Show me both Verilog-A code and Netlist.

10. ## Thread: \$freq while using AC analysis to access lookup table

by pancho_hideboo
Replies
12
Views
722

### Closed: Re: \$freq while using AC analysis to access lookup table

Correction.

`include "constants.vams"
`include "disciplines.vams"

module my_freq(out);
output out;
voltage out;

electrical gnd;
11. ## Thread: \$freq while using AC analysis to access lookup table

by pancho_hideboo
Replies
12
Views
722

### Closed: Re: \$freq while using AC analysis to access lookup table

`include "constants.vams"
`include "disciplines.vams"

module my_freq(out);
output out;
voltage out;

electrical gnd;
ground gnd;
12. ## Thread: \$freq while using AC analysis to access lookup table

by pancho_hideboo
Replies
12
Views
722

### Closed: Re: \$freq while using AC analysis to access lookup table

Compare CDF parameter and spectre -h nport.

Or simply use gnd node in Verilog-A.
Ground node declaration.
13. ## Thread: \$freq while using AC analysis to access lookup table

by pancho_hideboo
Replies
12
Views
722

### Closed: Re: \$freq while using AC analysis to access lookup table

If you insist on Verilog-A, instantiate spectre’s primitive nport in Verilog-A.

https://designers-guide.org/forum/YaBB.pl?num=1574240440#2

Other possibility is “deriv(ac_stim(1))/(M_TWO_PI)”.
...

by pancho_hideboo
Replies
2
Views
268

### Closed: Re: SystemVerilog Behavioral Simulation in Cadence Virtuoso/AMS/Incisive/Spectre

https://designers-guide.org/forum/YaBB.pl?num=1574282166

Use file name of “*.sv”.

Surely understand basic things correctly before EDA Tool Play.
This is very true for all your previous posts.
15. ## Thread: \$freq while using AC analysis to access lookup table

by pancho_hideboo
Replies
12
Views
722

### Closed: Re: \$freq while using AC analysis to access lookup table

Use spectre primitive, nport.

If you use Keysight ADSsim, use DAC(Data Access Component).

16. ## Thread: \$freq while using AC analysis to access lookup table

by pancho_hideboo
Replies
12
Views
722

### Closed: Re: \$freq while using AC analysis to access lookup table

If you mean Verilog-A, \$freq is not available in Verilog-A.

17. ## Thread: Spectre RF Envelope Simulation for Wireless Transmitter with Switched-Cap Baseband

by pancho_hideboo
Replies
1
Views
204

### Closed: Re: Spectre RF Envelope Simulation for Wireless Transmitter with Switched-Cap Baseban

Simply do one tone(LO) envelope analysis.
fs and DAC output are treated as baseband signal.
That’s all.
18. ## Thread: Is it possible to eliminate harmonics when operated in compression

by pancho_hideboo
Replies
2
Views
241

### Closed: Re: Is it possible to eliminate harmonics when operated in compression

Use resonator tank, if your PA is for narrowband application.
Otherwise, use low pass filter.

Surely learn very basic things before EDA Tool Play.

by pancho_hideboo
Replies
2
Views
305

### Closed: Re: Plotting QAM 16 constellation in Cadence

See followings.
https://designers-guide.org/forum/YaBB.pl?num=1260978648
https://designers-guide.org/forum/YaBB.pl?num=1264511244/3#3
https://designers-guide.org/forum/YaBB.pl?num=1270105534/1#1

by pancho_hideboo
Replies
2
Views
305

### Closed: Re: Plotting QAM 16 constellation in Cadence

Use skill function in Cadence ViVA.
Simply x-y plot with sampling at appropriate time points.

Regarding EVM, calculate rms error value between output signal and reference signal.
21. ## Thread: How to extract Voltage of a schematic net in ADS ?

by pancho_hideboo
Replies
1
Views
246

22. ## Thread: Reflections when conjugately matched

by pancho_hideboo
Replies
3
Views
377

### Closed: Re: Reflections when conjugately matched

Voltage wave is reflected.

Surely read and learn Power wave in Pozar’s Book, before EDA Tool Play.

See the followings.
23. ## Thread: Noise calculation in static-dynamic circuit

by pancho_hideboo
Replies
3
Views
274

Yes........
24. ## Thread: Output Impedance Of a Triple cascode

by pancho_hideboo
Replies
7
Views
662

### Closed: Re: Output Impedance Of a Triple cascode

Negative real part is due to Y12.

You don’t care about feedback path of each MOSFET at all.

Surely learn very basic things before EDA Tool Play which you like.
25. ## Thread: Running different type of simulation in one environment

by pancho_hideboo
Replies
6
Views
461