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Dielectric Debuts FM Manifold Combiner - Radio World

Dielectric Debuts FM Manifold Combiner

Dielectric Debuts FM Manifold Combiner
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Dielectric said its DFM FM Manifold combiner is now shipping.
Shown at the spring NAB convention, the design differs from conventional constant impedance filters, the company said, in that it features smaller size and reduced cost while retaining IBOC-compatible electrical performance.
Physical size is dependent on frequency separation and relative input power but Dielectric said component orientation allows flexibility in meeting size restrictions. The DFM Combining of up to six stations is possible. Two models are available to accommodate high- and low-power needs. A combination of manifold Tee junction and bandpass filter causes each input to appear as a short circuit stub to each of the other inputs. Appropriate spacing of manifold entry points in conjunction with stub lengths at each input allows adjustment for optimum combiner performance.

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