Arrangement for reducing intermodulation distortion of radio frequency signals
AssigneeNokia Telecommunications Oy
InventorRisto Piirainen
Life of this patent
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Abstract
The invention relates to an arrangement for radio frequency signals particularly in a duplex filter summing part comprising a conductive housing and at least one common transmission line for at least two different signals. In order to reduce intermodulation distortion of signals, which arises in the summing part, the housing of the summing part is arranged to function as a ground plane for the transmission line without the ground plane of a printed board or a ground plane otherwise connected to the transmission line.
Claims3
An arrangement for reducing interference of radio frequency signals in a transceiver summing part, comprising:
- a conductive housing;
- and
- at least one common transmission line in the summing part for carry at least two different signals, wherein
- the housing of the summing part is arranged to function as the only ground plane for the transmission line, without a separate ground plane being electrically coupled to the transmission line and arranged on a printed board, in order to reduce intermodulation distortion of signals which arises in the summing part, wherein
- the summing part comprises the printed board including the at least one common transmission line for at least two different signals;
- and
- in order to reduce intermodulation distortion of signals, which arises in the summing part, the printed board is one-sided;
- and
- the transmission line is formed on the one side.
Dependencies are inferred from the claim text.