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Bonding wire is used to make an interconnection between ICs and the PCB board. It is small but critical in the structure. In this paper, educational 3D electromagnetic analysis software CST MWS was used to model and simulate several bonding wires with different parameters at high frequency. This paper focuses on relations between parameter changes and transmission performance of bonding wires, forming...
A wide bandwidth circularly polarized microstrip antenna array using sequentially rotated feeding technique is presented in this paper. First a stacked microstrip antenna with tuning stub is designed, which meets wide bandwidth application. Then sequentially rotated feeding technique is introduced, basing on which a 4 element stacked microstrip antenna array with preferable axial ratio performance...
A design of broadband circularly polarized (CP) microstrip antenna with a truncated-corner patch is presented in this paper. Using a single chip-resistor loading at the axis-line orthogonal to the feed location line, the truncated-corner microstrip antenna exhibits an effective axial ratio (AR) bandwidth of 3.0%, which is about three times of that without any chip-resistor loading. The proposed CP...
A broadband microstrip dipole antenna loaded with shorted pin is experimentally presented in the paper. The bandwidth of the antenna has increased from 70 MHz (3.5% bandwidth in 2 GHz) to 190 MHz (9.5% bandwidth in 2 GHz) by using a shorted pin. With a vertical gain of 2.7 dB and front-back gain of more than 5 dB, this broadband microstrip dipole antenna has features desirable in array application...
Based on the cavity model of microstrip antennas (MPAs) and the principle of superposition, the distribution of electromagnetic field of loaded MPAs is analyzed in this paper. With the proposed theory, input impedance and resonant frequency for some loading cases can be obtained and some useful conclusions are given. Example of rectangular loaded MPA is illustrated and comparisons between calculation...
A single-feed circular polarized (CP) rectangular microstrip antenna (MPA) is proposed. Capacitive disk coupling feed is used in the design. By connecting a resistor load to another capacitive disk at the opposite position, CP radiation over a wide frequency range is realized. Experimental results show that the fabricated antenna has an impedance bandwidth (S11 return loss) of 78.7% and a 3-dB axial...
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