RF System using HSPICE-RF ?

[nitu]

hspice rf

Hi..
I have heard that some RF system design tools use HSPICE as simulator.
So, why there is need to have complete suite for RF design ?
What is additional advantages of using RF Design suite like ADS by Agilent or MWO by AWR instead of simulator like HPICE or Eldo ?

Thanks for answering my query..

 

[madengr]

hspice rf in

Harmonic balance is much faster than transient simulators for closely spaced tones such as IMD products. S-parameters and distributed models are easier to implement in a frequency domain simulator.

 

[khouly]

ads hspice rf hb result different

Hspice RF has HB analysis engine
nut MWO , ADS , have , and they have the system behavioral model components
but HSPICE has no such block

khouly

 

[nitu]

harmonic balance hspicerf

Hi..
Thanks for your response... Can you please explain how does behavior level model helps ? What are the disadvantages of not using behavior model in HSPICE-RF ?

 

[khouly]

hspice awr mwo

as a system designer , u need behavioral models to fast simulate the complete system response , and optimize the performance of overall system by changing the charcteistic of each block like LAN gain , and noise figure

and then pass these values for circuit designers to begin circuit analysis
so the block in ADS , and MWO is prebuilt models for the amps ,mixers

i have used system simulation in ADS is very good , some ppl here used MWO , and also say it is excellent

khouly

 

[Manjunatha_hv]

Hello Nitu,



There are two things;

1. Ciruit level HSPICE simulation for RF design;
Use the AWR Microwave Office (MWO) / Analog Office (ANO) integrated HSPICE (HSP)...
HSPICE® is the industry’s “gold standard” for accurate circuit simulation. As the only OEM supplier of HSPICE, AWR incorporates it into the AWR design environment (AWR DE) for convenient access, providing the fastest, most accurate, highest capacity simulations, as well as hundreds of foundry-proven built-in device models for most commercial IC foundries. In AWR DE, the same circuit schematic can be used as input to any integrated simulator, and the same graph can display results from any simulator for comparison. Likewise, the AWR DE optimizer and tuner are available for use with integrated simulators.
The HSPICE integration also includes the extensive library of highly accurate AWR frequency domain models. AWR uses a sophisticated rational approximation technique to create accurate equivalent models that HSPICE can simulate in the time domain robustly and efficiently.

Which has the following advantages compared to HSPICE-RF...
• supporting full array of dispersice elements (Microstripline, & Stripline elements)
• hierarchically integrated with EM simulation & S-parameters
• simulator with Tuning, Optimization & Statistical (Yield) Analysis

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2. System level Simulation use AWR Visual System Simulator (VSS)
VSS 2006 has been enhanced in many areas as part of AWR's ongoing commitment to provide engineers with the unique ability to design the right system architecture and formulate suitable specifications for each of the underlying components in today's complex communications designs. The VSS development team has targeted key features that will help designers reduce time-to-market by eliminating iterations and rework, and cut system costs by ensuring that components are not over-specified and thus unnecessarily expensive.

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---manju---