Using CAD for RF Architecture Engineering and Optimization
Short summary:
Using CAD for RF Architecture Engineering and Optimization The RF architecture phase is the foundation for the entire RF design. However, designers are still using a hodgepodge of software tools during this phase ...
Long summary:
Using CAD for RF Architecture Engineering and Optimization The RF architecture phase is the foundation for the entire RF design. However, designers are still using a hodgepodge of software tools during this phase, which completely eliminates all the design verification steps in the process. Oversights in the architecture result in numerous design iterations. Furthermore, a mixture of software tools cannot identify root causes of architecture problems. It is surprising that in this day and age, when we have had so many advances in computer and software technology, RF foundation work is still being done with spreadsheets, math packages, and custom tools. This paper presents a completely new way of thinking about RF simulation that starts at the foundation of the problem, which is RF architecture. We will establish the need for RF architecture tools and show through an actual software example how we can use this tool to improve the design process by reducing unnecessary costs and design iterations, thus allowing designers time to improve the quality of the product. Design Process Overview A communication-system design from conception through production involves a sequence of phased steps. If you cant achieve satisfactory results in one step, you may need to go back to the previous one and restructure it as part of an iterative back-and-forth process, but you dont want to go back more than one step in the process (Wireless Design and Development magazine). You can first simulate system architecture to efficiently allocate and distribute performance parameters among the various stages, balancing and trading off factors such as input signal strength, internal and external noise, bandwidth, distortion, and channel dynamics to achieve system goals at lowest cost. This simulation isnt necessarily a one-pass process, either. You may decide on what initially appears to be optimum balance among the stages, only to find that you cant meet the design goals for one stage. When this situation happens, the iterative process begins: You go back to your original plan, re-evaluate and reallocate performance goals for each stage or modify your algorithms, Using CAD for RF Architecture Engineering and Optimization Rulon VanDyke and then try to design a suitable circuit. (Bill Schweber, Communication Simulation Software Smoothes System Design, EDN Magazine, August 3, 1998, pgs 87 108) The typical conception through production design flow is illustrated in Figure 1. 1. Architecture Phase 2. Design / Purchase Phase 3. Implementation Phase 4. Integration Phase 5. Pre-production Phase 6. Production Phase An ideal RF design cycle using state-of-the-art technology is as follows: Architecture Phase 1. Propose a number of architectures 2. Perform a quick high level static analysis of each architecture 3. Perform an advantage / disadvantage trade-off study between proposed architectures 4. Select the desired architecture 5. Perform an in-depth dynamic analysis of the ...
Source: www.eagleware.com
Search Terms:
Related
The importance of architects, rip off a side of our home, build a new
second floor, move a staircase and add a
... There is a history to people deciding
they can build a home without an
architect, ...,
more
Working with an architect for your home, architect for your home. Whether you are
planning to build a new house, to alter or
... designed to show how an architect. can
help, the benefits to your ...,
more
Ductility Design of Foundations of Highway Bridge Abutments, Ductility design of foundations of
abutments against severe earthquakes has
been
newly introduced in the Specifications for
Highway Bridges in Japan. This paper
describes
the summary of the ductility design method
as well as its background. One of the
features
of this method is the adoption of a new
procedure to evaluate seismic active earth
pressure
that is applicable up to high seismic
loads based on the modified Mononobe-Okabe
method.
We also conduct back-analyses of the case
histories of abutments including
foundations
damaged in the past earthquakes following
the ductility design method proposed here.
The
results from the back-analyses confirm the
applicability of the ductility design
method.,
more
