White Papers

Wireless Power Transmission with Circularly Polarized Rectenna

The rectenna is the voltage-doubler rectifier with the low-pass filter (LPF) for efficiency optimization and higher order harmonics re-radiation elimination. According to the measured results, the maximum RFto- DC conversion efficiency of the rectenna achieved 75% when the RF power of 15dBm is received with a load resistance of 2k at free space. The experimental results prove that the proposed rectenna is suitable for the WPT applications.
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Solutions for Wideband Radar and Satcom Measurements

A growing trend in Satellite communication (Satcom) and Radar systems in the aerospace and defense market is the need for increased signal and analysis bandwidth and processing gain. Satcom systems are being driven by demands for increased data rates, while modern Radar systems require more processing gain to improve range resolution, which in turn drives wider modulation bandwidths.
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The Cost and Performance Benefits of 80 GHz Links Compared to Short-Haul 18-38 GHz Licensed Frequency Band Products

GHz wireless links deliver multi-gigabit data rates over multi-kilometer distances, with the interference protection of licensed band operation. The key benefits provided by these systems include: highest available throughput; simple, all-outdoor design; lowest spectrum licensing costs and lowest dollar-per-megabit total cost of ownership.
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Design of Microstrip Planar Triplexer for Multi-mode/Multi-band Wireless Systems

A novel microstrip planar triplexer for multi-mode/multi-band wireless systems has been proposed in this paper. The proposed triplexer is composed of a dual-band bandpass filter (BPF), a low pass filter using microstrip stepped-impedance hairpin resonators and simple associated matching circuits. The dual-band BPF is realized by using parallel coupled microstrip lines and open-loop stepped-impedance resonators (SIR) loaded with two shunt open stubs. Compared with the conventional triplexer configuration, it only needs to design two filters.
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