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1999•IEEE Transactions on Microwave Theory and TechniquesRequires access

Failures in power-combining arrays

D.B. Rutledge, Nai-Shuo Cheng, R.A. York, Robert M. Weikle, M.P. De Lisio

Open publisher page 31 citations

Abstract

We derive a simple formula for the change in output when a device fails in a power-combining structure with identical matched devices. The loss is written in terms of the scattering coefficient of the failed device and reflection coefficient of an input port in the combining network. We apply this formula to several power combiners, including arrays in free space and enclosed waveguide structures. Our simulations indicate the output power degrades gracefully as devices fail, which is in agreement with previously published results.

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What this paper is about

We derive a simple formula for the change in output when a device fails in a power-combining structure with identical matched devices. The loss is written in terms of the scattering coefficient of the failed device and reflection coefficient of an input port in the combining network. We apply this formula to several power combiners, including arrays in free space and enclosed waveguide structures. Our simulations indicate the output power degrades gracefully as devices fail, which is in agreement with previously published results.

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Available abstract

We derive a simple formula for the change in output when a device fails in a power-combining structure with identical matched devices. The loss is written in terms of the scattering coefficient of the failed device and reflection coefficient of an input port in the combining network. We apply this formula to several power combiners, including arrays in free space and enclosed waveguide structures. Our simulations indicate the output power degrades gracefully as devices fail, which is in agreement with previously published results.

Key concepts: Reflection coefficient, Power (physics), Scattering parameters, Reflection (computer programming), Electronic engineering, Scattering, Simple (philosophy), Waveguide

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