Title :
A compact high directivity coupler with ±0.15dB error under VSWR 2.5∶1 for 3×3mm2 UMTS power amplifier modules
Author :
Li, Yang ; Prikhodko, Dmitri ; Zhu, Rick ; Abdallah, Hichem ; Nabokin, Sergey ; Batrin, Maxim ; Tkachenko, Yevgeniy
Author_Institution :
Skyworks Solution Inc., Woburn, MA, USA
Abstract :
This paper presents an approach to design high directivity couplers on compact multilayer power amplifier module (PAM). Coplanar and bilevel coupled lines structures are analyzed and compared. The effects of layout are investigated. A bilevel coupled line coupler is developed and integrated into 700 MHz UMTS 3 × 3 mm2 PAM. It achieves more than 28 dB directivity and the coupling factor variation of PAM is within ±0.15 dB under VSWR 2.5:1.
Keywords :
UHF power amplifiers; directional couplers; UMTS power amplifier modules; bilevel coupled line structure; compact high directivity coupler; compact multilayer power amplifier module; coplanar line structure; frequency 700 MHz; 3G mobile communication; Communication system control; Control systems; High power amplifiers; Impedance matching; Laminates; Nonhomogeneous media; Power amplifiers; Power generation; Robust control; Directive coupler; asymmetric coupled line; front end module; multilayer laminate; power amplifier module;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2010 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-4725-1
Electronic_ISBN :
978-1-4244-4726-8
DOI :
10.1109/RWS.2010.5434159
