The proposed capacitive probe shown in Fig.2 consists of a three-part coaxial capacitive sensor in which the middle one is acting as the main sensing probe and the other two capacitors considered as the guard rings
in order to reduce the stray capacitance effect and the source of errors in measurements (it must be mentioned that such design is more useful for the case of small capacitance change measurements).
Interchangeable fluorescent pin guard rings
are available in Nitrous Green (standard), Atomic Yellow, Neon Pink, Radical Red and Wicked White.
He also surveys the growing number of architectures and concepts being discussed, and delves into areas rarely considered by similar textbooks, such as power bus architecture, guard rings
, and floorplanning.
The new IP block employs a range of techniques to ensure high performance, reduced jitter and increased noise immunity, including: a dual-loop hybrid clock-and-data recovery (CDR) architecture which recovers the clock with less jitter; a coupled ring oscillator VCO design; internal voltage and current regulation for sensitive circuits; fully differential circuitry and clock signaling; as well as extensive use of guard rings
within the macro, the company said.