Power divider /combiner operates over 6 – 18 GHz

August 12, 2014 // By Graham Prophet
From Knowles Capacitors comes a Wilkinson power divider from its Dielectric Laboratories (DLI) facility. It is designed to provide in phase power splitting or combining over a broad bandwidth in low power applications.

The device is constructed using precision thin film fabrication with integrated resistors, coupled with DLI's high permittivity ceramic materials, to provide a high performance and repeatable design solution.

DLI product PDW05758 provides broad band performance in a compact and convenient surface mount package for easy integration. At 4.06 x 4.7 mm this divider can replace both packaged MMIC based solutions as well as larger dividers integrated into printed wiring boards (PWB) without sacrificing performance.

The power divider uses the same proprietary ceramic substrates for which DLI’s filters have become known. 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 6GHz – 18GHz operatio with return loss and isolation typically 20 dB or better throughout the band of operation while the mid band insertion loss is typically 0.4 dB.

This power divider is ideal for applications in which PWB space is of a premium. The divider is significantly smaller than 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. Moreover 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.

Knowles Capacitors; www.knowlescapacitors.com