Measuring only 2.5 x 3.0 mm², the B7654 and B7928 duplexers were developed for CDMA and for LTE Band 13 applications, respectively. The combination of both duplexers in a mobile phone allows the simultaneous transmission of voice and data.
The B7654 operates in tx from 824 to 849 MHz and for rx from 869 to 894 MHz. Attenuation of up to 57 dB is attained between the tx and rx bands. Interfering GPS frequencies are attenuated by 40 dB.
The B7928 offers a tx operation from 777 to 787 MHz in and an rx from 746 to 756 MHz. Attenuation of up to 62 dB is attained between the transmit and receive bands. Interfering GPS frequencies are attenuated by 45 dB. (Contact company for pricing — available now)
By Christina Nickolas
TDK-EPC , Tokyo , Japan
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