Title :
A compact BiFET front-end module for 802.11a/b/g/n TX/RX and 802.16e RX using a triplexer filter
Author :
Williams, Wyman ; Cho, Taeyu ; Mustafa, Omar ; Patel, Ajay ; Ribafeita, Rui ; Trippe, Mike
Author_Institution :
Norcross Design Center, ANADIGICS, Inc., Norcross, GA, USA
Abstract :
A compact front-end module (FEM) incorporating WiFi TX/RX paths and WiMAX RX paths is presented. The FEM is dual-band-transmit/tri-band-receive. By integrating InGaP HBT power amplifiers and pHEMT T/R switches on a single die, this functionality is achieved in a 1.4 × 4 × 5.4 mm surface mount module. Assembly involves only one wire-bonded GaAs die and three SMD components on a 4-layer FR-4 laminate. On Transmit, the FEM covers 2.4 - 2.484 GHz and 5.15 - 5.875 GHz with 4% EVM at +17 dBm output. Receive bands are 2.3 - 2.69 GHz, 3.4 - 3.8 GHz and 5.15 - 5.875 GHz. All receive bands are passive. Through the use of a triplexer filter, switches are eliminated from the 3.4 - 3.8 GHz receive path, achieving a typical insertion loss of 1.5 dB in that band. Design and performance of the key subcomponents are presented, as well as top level FEM performance.
Keywords :
III-V semiconductors; UHF bipolar transistors; UHF filters; UHF integrated circuits; WiMax; gallium arsenide; heterojunction bipolar transistors; high electron mobility transistors; indium compounds; microwave bipolar transistors; microwave field effect transistors; microwave filters; microwave switches; surface mount technology; wireless LAN; 4-layer FR-4 laminate; 802.11a/b/g/n TX-RX; 802.16e RX; GaAs; HBT power amplifiers; InGaP; WiFi TX-RX; WiMAX RX paths; compact BiFET front-end module; dual-band-transmit-triband-receive; frequency 2.3 GHz to 2.69 GHz; frequency 3.4 GHz to 3.8 GHz; frequency 5.15 GHz to 5.875 GHz; insertion loss; loss 1.5 dB; pHEMT T/R switches; surface mount module; top level FEM performance; triplexer filter; wire-bonded die; Finite element methods; Gallium arsenide; IEEE 802.11 Standards; Laminates; Power amplifiers; Radio frequency; WiMAX; RF Front-End-Module; WiFi; WiMAX; Wireless Module;
Conference_Titel :
Bipolar/BiCMOS Circuits and Technology Meeting (BCTM), 2011 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-61284-165-6
DOI :
10.1109/BCTM.2011.6082787
