Title :
Series-cascaded absorptive notch-filters for 4G-LTE radios
Author :
Psychogiou, Dimitra ; Ruiyi Mao ; Peroulis, Dimitrios
Author_Institution :
Dept. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
This paper focuses on novel filtering architectures for LTE-band transmit and receive RF-filters. For the first time, it is demonstrated that advanced filtering components with low insertion loss (2.8-4.9 dB) and large attenuation stopbands (25-50 dB) can be created by series-cascaded absorptive bandstop filters with quality factors even as low as 12-45. Transmit and receive filter modules for LTE-band 1 duplex circuits are shown. Lumped-element absorptive bandstop filters with the highest reported Q of 43 at 2 GHz are presented. Tunability of the presented filter arc hitectures is also discussed.
Keywords :
4G mobile communication; Long Term Evolution; UHF filters; notch filters; 4G LTE radio; LTE-band receive RF filter; LTE-band transmit RF filter; Lumped-element absorptive bandstop filters; duplex circuit; frequency 2 GHz; large attenuation stopband; loss 2.8 dB to 4.9 dB; loss 25 dB to 50 dB; low insertion loss; quality factor; series cascaded absorptive bandstop notch filters; Attenuation; Band-pass filters; Insertion loss; Passband; Resonant frequency; Resonator filters; Topology; Absorptive; LTE-band; bandpass filter; bandstop filter; filter cascade; lumped-elements; tunable filter;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2015 IEEE
Conference_Location :
San Diego, CA
DOI :
10.1109/RWS.2015.7129726
