Capacitors
Variable capacitors, or varactors, were discussed at length in Chapter 3. In this chapter, we revisit the subject of varactors, but in the context of implementations that emphasize their application in...
View ArticleThe Binary-Weighted Capacitor Array
In the most general case, there are at least two types of tuning needs to be considered in RF/microwave circuits and systems. First, one might be interested in changing the frequency-determining...
View ArticlePhase Shifter Fundamentals
The fundamental function of a phase shifter circuit is to produce a replica of the signal applied at its input, but with a modified phase. Its performance is characterized by its insertion loss,...
View ArticleSpecifications and Topology
The phase shifter was to be of 4 bits with particularly wide bandwidth, as required by radar systems tasked with acquiring frequency-dependent target response and multipath signals [23]. At first...
View ArticleCircuit Design and Implementation
The filters were implemented in grounded coplanar waveguide (GCPW) media , and their design was carried out via a full-wave electromagnetic simulator [34]. For the lumped-element realization, the...
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