Wilkinson power divider provides in phase power splitting or combining
Knowles Capacitors announces a Wilkinson power divider that is designed to provide in phase power splitting or combining over a broad bandwidth in low power applications. This is achieved by application of precision thin film fabrication with integrated resistors, coupled with high permittivity ceramic materials, to provide a high performance and repeatable design solution.
The PDW05758 provides broad band performance in a compact and convenient surface mount package for easy integration. At 0.160x0.185” (4.7x4.06mm) this divider can replace both packaged MMIC based solutions as well as larger dividers integrated into printed wiring boards without sacrificing performance.
The power divider utilises the same proprietary ceramic substrates for which DLI’s filters have become known for. This high permittivity, yet temperature stable, substrate allows for the design of the power divider without typical parasitic effects associated with MMIC base solutions. The result is broad band 6-18GHz operation. The return loss and isolation are typically 20dB or better throughout the band of operation while the mid band insertion loss is typically 0.4dB.
This power divider is suited for applications in which printed wiring board space is of a premium. The divider is significantly smaller than what could be internally designed in typical printed wiring boards. As the part is manufactured with traditional thin film processes, a greater degree of consistency and repeatability over that of printed wiring board construction is achievable. As the resistors are integrated internally and located also with ‘thin film precision’ the amplitude and phase balance are far superior to what can be achieved with traditional surface mount resistors soldered onto a printed wiring board.
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