A.R. Kerr [1]
September 30, 1993
Keywords:
In a given frequency band, the achievable match between a capacitive microwave or millimeter - wave device and a resistance source is limited by the capacitance of the device and its series inductance. The fundamental limit on the match bandwidth examined for three circuits: (i) parallel RC, (ii) parallel RC with series L, and (iii) parallel RCL with series L. The broadband matching theories of BOde (1945) and Fano (1950) are used, the latter modified to avoid the standard low-pass to band-mass mapping in case (ii) because the terminals of the capacitance are not generally accessible for connection of the requisite parallel inductor. The results are fundamental to the design of broadband mixers, multipliers, switches, and detectors, using Schottky diodes or SIS junctions.
[1] NRAO/CV
Last modified: 09 December, 1999
kweather@nrao.edu