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To study the transverse flow pressure and flow pressure torque generated by non-uniform flow that the ship encounters when it passes the entrance of breakwater in the process of driving away from the port, a ship model sailing at the end of breakwater and a digital basin were established by utilizing computational fluid dynamics. In this way, numerical calculation was conducted for the tide field...
A sector-shaped dual-polarized antenna with T-shaped feeding structure is proposed. The proposed antenna, with 4 sector-shaped radiating elements, have a T-shaped feeding structure which will broaden the bandwidth, The proposed antenna achieves a impedance bandwidth of 49.7% for SWR<2 at both ports and a stable HPBW(Half-Power Bandwidth), the simulated gain is greater than 8dBi over the operating...
This paper proposes a novel design methodology for dual-band Doherty power amplifier (DPA) with improved dual-band combiner. The presented design method simplifies and optimizes structure of dual-band DPA. According to the theoretical analysis and measurement verification, the DPA with improved combiner can provide a high efficiency at both low and high input power levels at two working frequency...
In this paper, the concept and formulation of short-open calibration (SOC) and short-open-load (SOL) techniques are presented. This technique was initially proposed in 2.5D MoM and it is extended in integration with commercial software to analyze many kinds of periodic guided-wave structures. By calibrating out the error boxes, the guided-wave characteristics of these periodic structures, e.g., microstrip-line/CPW...
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