Hybrid multiplexer cuts complexity in 4G, LTE RF stages

Hybrid multiplexer cuts complexity in 4G, LTE RF stages

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By Graham Prophet


Technology that combines the properties of a multilayer ceramic and a SAW filter achieves steep attenuation and wide band transmission. Carrier aggregation and MIMO antenna systems, Murata notes, are increasingly being adopted in LTE communications in order to improve communication speeds for smartphones. With LTE, the communication frequencies are divided into low band (698-960 MHz), middle band (1427-2200 MHz) and high band (2300-2690 MHz).


With carrier aggregation an antenna is generally required for each frequency band. MIMO systems increase the quantity of antennas required and make the wireless circuit more complex. Murata’s hybrid multiplexer is able to take a single antenna signal and divide it into three frequency bands, reducing the number of antennas needed for carrier aggregation. This provides design surface area for MIMO systems that require multiple antennas.


The multiplexer measures 3.5 x 3.5 x 0.9 mm max and supports LTE and GMS transceiver applications.





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