OVER the last five years, the wireless infrastructure industry has witnesse
d explosive growth. In 1998, publicly announced infrastructure contracts ex
ceeded $25 billion worldwide. From air standards such as Global System for
Mobile Communications (GSM) to IS-95 to IS 136, the expansion of wireless s
ystems has been breath taking and there is still more on the horizon. With
this growth, however, comes increased pressure on system cost, manufacturin
g capacity, and overall reliability. The rapid transformation of the wirele
ss industry from high-end, specialty applications to a ubiquitous telecommu
nications infrastructure necessitates a new way to approach RF design.