Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Power Amplifier simulation in Spectre

Status
Not open for further replies.

zhaofeng1983

Member level 3
Joined
May 23, 2007
Messages
54
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,634
I have a question:
IS spectre PSS simulation can accurately predict power amplifier performance?
Then how about large power amplifiers?
 

zhaofeng1983

Member level 3
Joined
May 23, 2007
Messages
54
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,634
Thanks! I have this file but I doubt whether spectre will be accurate in large power amplifier design.

Then does anybody know how to use .dspf document generated by assura for spectre?
 

totowo

Member level 1
Joined
Mar 11, 2005
Messages
34
Helped
4
Reputation
8
Reaction score
2
Trophy points
1,288
Location
Shanghai
Activity points
1,498
In simulation on power amplifier, HB is more powerful than PSS method......The disadvantage of pss is the low speed and "fragile" convergence...

The PSS is also believable if your simulation steps is correct enough.(e.g. the order of your highest harmonics)..........of course, The precondition is, there is no divergence.......

The difference between HB & PSS is trivial, since the error of transistor model is more notable, especially in large-signal region......
 

khouly

Advanced Member level 5
Joined
Oct 20, 2003
Messages
2,368
Helped
461
Reputation
916
Reaction score
101
Trophy points
1,343
Location
EGYPT
Activity points
13,244
yeah , the HB is more robust and converge faster
the HB engine in ADS id very powerfull

khouly
 

BigBoss

Advanced Member level 5
Joined
Nov 17, 2001
Messages
5,013
Helped
1,508
Reputation
3,014
Reaction score
1,347
Trophy points
1,393
Location
Turkey
Activity points
30,235
The best simulation results are obtained by doing "an accurate transient simulation" and then FFT. The others are valid for "mild nonlinearities",hard nonlinear circuits can create convergence problems...
 

pipida

Junior Member level 1
Joined
Sep 14, 2006
Messages
15
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,281
Activity points
1,395
When I tried to simulate Class-E PA with large DC feed inductance, transient simulation cannot converge. The current through it cannot reach stable. HB simulation can provide quick and "accurate" results. PSS is not powerful enough compared to HB, especially when you try to feed signal of a lot of harmonics.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top