22 How Design Software Changed the World
David Vye, Editor, Microwave Journal
A history of the individuals, companies and products that helped define the development of design software
TECHNICAL FEATURES
64 Enhancement of Microstrip Stepped-impedance Low-pass Filters Using Fractal-shapes
Wen-Ling Chen and Guang-Ming Wang, Missile Institute of Air Force Engineering University; Guo-Dong Chen, Guang-Feng
Yao, Ying-Chen Han and Chun-Wang Xiang, Equipment Academy of Air Force
Design, fabrication and measurement of low-pass filter prototypes constructed with different fractal-shapes of different
iteration orders
78 A Modified Low Insertion Loss Dual-mode Filter Using Meander Spur-lines
Haiwen Liu, Chinese Academy of Sciences; Xiaohua Li, University of Electronic Science and Technology of China
Introduction to a dual-mode square-patch filter with meandered spur-lines providing current distribution distortions
84 Design of a Dual-band Planar Dipole Antenna for WLAN Applications
Wen-Shan Chen and Shih-Hung Cheng, Southern Taiwan University
Fabricated antenna with dual-band operation covering 2.23 to 2.62 and 4. 84 to 5. 38 GHz
SPECIAL REPORT
92 Software Vendors
Company descriptions of some of today’s leading EDA suppliers
PRODUCT FEATURES
96 Tailored RF & Microwave EDA Solutions
Schmid & Partner Engineering AG (SPEAG)
Introduction to a suite of solutions for the antenna, medical, automotive, EMC/EMI, optic and microwave device fields
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