Medium loss high power IBOC combiner

Details Medium loss high power IBOC combiner Medium loss high power IBOC combiner

2011-05-17

2011-05-17

Dao, Minh D (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Plural receivers

C455S180100, C455S273000, C455S176100, C333S124000, C375S216000

Reexamination Certificate

active

07945225

ABSTRACT:
A method and apparatus are disclosed for combining digital sidebands with an FM analog signal for IBOC transmission by a single antenna. Specifically, a high power filter combiner for combining an FM analog and a digital signal of the same channel, or frequency, is disclosed. The combiner has two inputs that respectively receive an FM analog and a digital signal to be transmitted in the same FM channel. The combiner has mild tuned filters interposed between the inputs and the output which are tuned to pass the FM analog signal while reflecting the digital signal such that the passed FM analog signal and the reflected digital signal combine as IBOC, i.e., an FM analog signal with digital sideband signals. The combined IBOC signal is provided at an output of the combiner, capable for transmission through a single antenna.

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