1296 MHz 2-way combiner.The combiner is build using 25 x 25 mm aluminum profile with a 8 mm copper tubing as center conductor. The hole in the middle is for soldering the center conductor. This hole and the ends must be closed before installing the combiner outdoor.
![]() This design is a combiner made up from two quaterwave transmission lines connected together. The transmission line is therefor one halfwave long - or 116 mm. 50 ohm N-connectors for the two antennas are placed at each end and in the middle another N-connector for the output.
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The two quaterwave sections must transform each antennas impedance of 50 ohm into
100 ohm, so when paralleled in the middle a 50 ohm impedance is again established.
Measured return loss is -20 dB with 3 dB splitter loss. Back to OZ2OE homepage. |