Abstract:
A Software-Defined Radio (SDR) mobile handset must cover multiple frequency bands with different frequency division duplex distances. This calls for an adaptive duplexer,...Show MoreMetadata
Abstract:
A Software-Defined Radio (SDR) mobile handset must cover multiple frequency bands with different frequency division duplex distances. This calls for an adaptive duplexer, which needs a low-isolation device to create an initial isolation. Such a device is implemented in a 130 nm Silicon-on-Insulator (SOI) process. Its performance benefits from a high-Q laminated PCB inductor which has a measured inductance and Q-factor at 2 GHz of 1.19 nH and 125, respectively. The tunable low-isolation device provides an isolation exceeding 30 dB at both transmit and receive frequencies of each targeted four LTE frequency bands. The insertion loss from PA to antenna is below 2 dB in LTE band I. The implemented circuit occupies an area of 2.4 mm2.
Published in: 2014 1st Australian Microwave Symposium (AMS)
Date of Conference: 26-27 June 2014
Date Added to IEEE Xplore: 22 January 2015
Electronic ISBN:978-1-4799-5541-1