Title :
CMOS based Tunable Matching Networks for cellular handset applications
Author :
Whatley, Richard ; Ranta, Tero ; Kelly, Dylan
Author_Institution :
Peregrine Semicond., San Diego, CA, USA
Abstract :
The explosion in the number of connected cellular devices and ever-increasing data bandwidth requirements has increased the number of bands a modern cellular device must support. This places stringent requirements on cellular handset antennas, as they need to cover more bands than ever before, while meeting increasing Total Radiated Power (TRP) requirements. A potential solution to this problem is achieved by the use of Tunable Matching Networks, which can maximize the transmitted radiated performance and receive sensitivity by optimizing the impedance match between the RF Front End and the Antenna. This paper outlines the challenging requirements placed on tunable components, presents a Tunable Matching Network utilizing Digitally Tunable Capacitors (DTCs), and proposes a method for evaluating the improvement this network brings to the cellular handset.
Keywords :
CMOS integrated circuits; capacitors; cellular radio; impedance matching; mobile antennas; mobile handsets; CMOS based tunable matching networks; RF front end; cellular devices; cellular handset; cellular handset antennas; data bandwidth; digitally tunable capacitors; impedance matching; total radiated power; Antennas; Impedance; Radio frequency; Switches; Telephone sets; Tuners; CMOS-on-Sapphire; DTC; Digitally Tunable Capacitor; Reconfigurable RF Front-end; TIS; TRP; Tunable Matching Networks;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972913
