Compact SAW duplexer with excellent isolation in the transmit and receive paths
TDK Corporation presents a new EPCOS duplexer for LTE Band 1, which at 60 dB features very high isolation for both the Tx and Rx paths. Based on SAW technology the B8651 duplexer has a miniature footprint of just 1.8 mm x 1.4 mm.
Thanks to the very good separation of the Tx and Rx signals, the new EPCOS duplexer can be combined with power-saving envelope tracking power amplifiers without any additional prefiltering. This significantly simplifies the design of the front end, leading to major cost benefits. A further advantage of the new duplexer is its low insertion loss of only 1.9 dB in the Tx path, which leads to a further power saving and thus a longer operating life of the battery. Applications are smartphones, tablets as well as LTE USB sticks for notebooks.
- Smartphones, tablets and LTE USB sticks
Main features and benefits
- Excellent isolation of 60 dB
- Low insertion loss in the Tx band of only 1.9 dB
- Can be combined with envelope tracking power amplifiers without additional filters