Computer-Aided Design of Ultra-Wideband Active Antennas by Means of a New Figure of Merit

2008 ◽  
Vol 18 (4) ◽  
pp. 290-292 ◽  
Author(s):  
V. Rizzoli ◽  
A. Costanzo ◽  
P. Spadoni
Keyword(s):  
Computer Aided Design ◽  
Figure Of Merit ◽  
Ultra Wideband ◽  
Active Antennas ◽  
Computer Aided ◽  
Aided Design

Computer-Aided Design of Ultra Wideband Planar Monopole Antenna with Defect Ground for EMC Testing in Communication

2014 ◽  
Vol 513-517 ◽  
pp. 3273-3276
Author(s):  
J.Q. Ruan ◽  
K.B. Tan ◽  
H.M. Lu ◽  
Y.C. Song ◽  
F.F. Fan ◽  
...  
Keyword(s):  
Communication System ◽  
Computer Aided Design ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Computer Aided ◽  
Planar Monopole Antenna ◽  
Aided Design

In this work, a monopole antenna with defect ground is proposed for ultra wideband EMC measurement in communication system. The antenna is fed by micro-strip. It is demonstrated that the antenna provides an impedance bandwidth ranging from 2.5 GHz to 13.5 GHz (for VSWR < 2) and supports an adequate pattern.

scholarly journals Computer aided design of ferrite lumped element circulators

2021 ◽  
Vol 23 (4) ◽  
pp. 74-84
Author(s):  
Vladimir N. Borodin ◽  
Valery A. Kozlov ◽  
Evgeny A. Mikhalitsyn ◽  
Alexander V. Sorokin
Keyword(s):  
Computer Aided Design ◽  
Design Methodology ◽  
Ultra Wideband ◽  
Design System ◽  
Resonant Circuit ◽  
Lumped Element ◽  
Computer Aided ◽  
Impedance Calculation ◽  
Aided Design ◽  
Theoretical Results

The results of integrity of narrowband and wideband lumped element circulators design methodology to the computer aided design system of microwave devices AWR Microwave Office are presented in the article. The calculation method of narrow band circulators circuits which consist of serious and shunt tuning capacities is investigated. The simple and visual method of wideband ferrite isolators optimize design based on circulation impedance calculation is described here. The results of design of the ultra wideband circulator with shunt capacity, serious resonant matching circuit and serious resonant circuit between common terminal and ground are considered. The new theoretical results of calculation of two schematics of wideband high power circulators with serious tuning capacity are presented. The first schematic is formed with matching resonant network being connected in serious at each terminal. It is shown that double hump characteristic is realized. The second schematic is formed with serious resonant network connected between common terminal and the ground. It is shown that four-order Tchebycheff characteristic is realized.

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