By William F. Egan
The final word useful source for state-of-the-art RF method layout professionals
Radio frequency parts and circuits shape the spine of present day cellular and satellite tv for pc communications networks. for this reason, either training and aspiring execs have to be in a position to resolve ever extra complicated difficulties of RF design.
mixing theoretical rigor with a wealth of functional services, functional RF method layout addresses various complicated, real-world difficulties that approach engineers tend to stumble upon in present day burgeoning communications with suggestions that aren't simply on hand within the latest literature. the writer, knowledgeable within the box of RF module and approach layout, offers strong suggestions for studying actual RF structures, with emphasis on a few which are at the moment now not good understood. Combining theoretical effects and types with examples, he demanding situations readers to deal with such sensible concerns as:
* How status wave ratio impacts procedure gain
* How noise on an area oscillator will have an effect on receiver noise determine and desensitization
* how you can be certain the dynamic variety of a cascade from module specifications
* How section noise impacts process functionality and the place it comes from
* How intermodulation items (IMs) predictably switch with sign amplitude, and why they typically swap differently
a vital source for cutting-edge RF procedure engineers, the textual content covers very important subject matters within the parts of procedure noise and nonlinearity, frequency conversion, and part noise. in addition to a wealth of useful examples utilizing MATLAB(r) and Excel, spreadsheets can be found for obtain from an FTP website to assist readers follow the tools defined during this very important source.
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Extra info for Practical RF System Design 2003 IEEE
Refer to Fig. 2. With this notation, Eq. 4) 1 vo1 . 5) j vo,j . vi,j +1 More generally, for the j th module, vi,j vo,j +1 = 10 CHAPTER 2 GAIN vin,3 = vo,3 vout,4 = vo,4 Module 3 Cable 2 vout,3 = vi,3 vin, j = vo, j Cable 4 vin,4 = vi,4 vout, j = vi, j Cable j + 1 vin, j +1 = vi, j +1 Module THESE ARE in THESE ARE out Module System output Module THESE ARE i Fig. 2 Module j Cable j − 1 Module System input vout, j +1 = vo, j +1 THESE ARE o Definitions of wave subscripts. 6) vo,j +1 = S21j vo,j + S22j vi,j +1 .
85) where the third subscript is the module number and module 1 drives module 2. If module 1 is unilateral (S121 = 0, Fig. 13a), this becomes Scomp |1 unilateral 0 S111 = S212 S211 1 − S112 S221 S222 + S122 S212 S221 . 86) If module 2 is unilateral (S122 = 0, Fig. 13b), this becomes Scomp |2 unilateral S112 S121 S211 S111 + 1 − S112 S221 = S212 S211 1 − S112 S221 0 . 87) S222 In each case we see that the composite is unilateral, since S12,comp = 0. If either of these composites is combined with another bilateral module, either after or vo1 S111 0 vi1 S211 S221 vo2 vi2 S112 S122 vo3 S212 S222 vi3 S112 0 vo3 S212 S222 vi3 = vo1 S111 (a) vo1 S111 S121 vi1 S211 S221 vo2 vi2 = S112vo2 (b) Fig.
SIMPLIFICATION: UNILATERAL MODULES 27 driven by a module. The cascade gain would be relative to the power that the antenna would deliver to a 50- resistor. 3 Phase Since phase shifts of the modules and effective phase shifts of the interconnections add to give the cascade phase shift, these can also be summed, based on specifications or estimates for the modules and the expected phase shift due to cable length (−b) plus γ [Eq. 77)]. Maximum variations can be estimated for the modules and added to those given by the extremes for the interconnections in Eq.