Wenjun Su

Single-chip RF CMOS UMTS/EGSM transceiver with integrated receive diversity and GPS

The large commercial success of multiband multimode 3rd-generation cellular products has driven single-chip integration, SAW-filter reduction and low power consumption. State-of-the-art solutions require quad-band EGSM combined with multiband WCDMA/HSPA receiver diversity and integrated GPS. Compact form factors make single-chip SAW-less solutions highly desirable. A Quad-Band GSM/EDGE-only transceiver was published in [1], and Triple-Band WCDMA-only transceiver solutions were published in [2–4]. This work describes the first multiband WCDMA/HSPA/EGPRS single-chip transceiver with GPS and receiver diversity. This device supports UMTS Bands 1,2,3,4,5,6,8,9,10 and GSM/EDGE 800, 900, 1800, 1900MHz Bands. It is implemented in cost-effective 0.18µm RF CMOS technology and uses a reduced number of TX and RX SAW filters.

A 65nm CMOS SoC with embedded HSDPA/EDGE transceiver, digital baseband and multimedia processor

Cellular phones in emerging markets have continued to grow with multimedia features such as MP3 playback, video encode and decode, high-resolution cameras and web browsing. To efficiently support multimedia functionalities, highperformance modems are required. There is also a strong demand to reduce the cellular phone PCB footprint, and to enable integration of peripheral devices such as Bluetooth and Wireless LAN. Previously reported SoC or SiP solutions have integrated a GPRS/EDGE radio with modem and limited multimedia capabilities [1–4]. This paper presents a multimode UMTS/GSM RF transceiver integrated with a digital baseband having advanced multimedia functionalities. The SoC, designed in 65nm digital CMOS, supports quad-band GSM/GPRS/EDGE (3GPP R4, Class 12) and tri-band UMTS/WCDMA (3GPP R99, R5 cat 5/6), including band 1–2–4–5–6–8–9–10.