Increasing Wideband Antenna Performance With Active Matching
Present wide-band antennas, operating in the VHF and UHF frequency bands, are typically passively matched to achieve a reasonably good performance, with low enough VSWR (Voltage Standing Wave Ratio) levels, over a wider bandwidth. This White Paper presents an approach that allows optimizing the matching of wideband antennas more efficiently and without the trade-offs that come with passive matching methods.The purpose of this paper is to make users and OEMs of radio frequency (RF) devices aware of the benefits that wideband antennas can provide when using active matching.It will describe how the overall performance of a RF system can be efficiently enhanced through COJOT’s approach of using wideband antennas with active matching that can be operational within the VHF/UHF frequency ranges. The benefits of efficiency enhancement can include: improved antenna performance (extra range), better signal quality, reduced power consumption or smaller antenna designs. There is a clear need for a smart approach that will provide additional benefits as well as an indispensable level of flexibility to users and OEM’s of RF systems when keeping up with the demanding market requirements.
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