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SAW-less transceiver handles 3G, LTE

Posted: 04 Jun 2010     Print Version  Bookmark and Share

Keywords:3G  LTE  transceiver  multi-mode  multi-band 

MB86L10AFujitsu Microelectronics America Inc. has introduced what it claims is the industry's first transceiver that supports 3GPP LTE/WCDMA/EGPRS wireless phones. The Fujitsu MB86L10A transceiver eliminates 3G and LTE TX and RX interstage SAW filters and low-noise amplifiers (LNAs).

The single-chip transceiver features backward compatibility with a high-level programming model (API) for radio control using DigRF/MIPI D3G and D4G open standard digital interfaces. This makes the MB86L10A compatible with a wide range of industry base bands.

The company claims the module enables cell phone manufacturers to reduce component count, board space and total bill of materials (BOM). Its simplified programming model significantly reduces development time and simplifies integration of the RF in a radio platform. The transceiver, optimised for compressed mode operation, features quad-band GSM/EDGE and up to five WCDMA or LTE bands in a single-phone configuration.

The MB86L10A includes eight outputs that drive the power amplifier, eliminating the need for TX SAW filters while simultaneously supporting multi-mode PAs. The receiver provides nine inputs that support LTE, WCDMA and GSM/EDGE. The RF frontend eliminates the need for LNAs and SAW filters. Five additional ports enable RX diversity in WCDMA and LTE modes. The receiver also incorporates anti-aliasing filters, digital channel filters, digital gain control and high-dynamic-range ADCs.

The MB86L10A supports GSM (GSM850, EGSM900, DCS1800, PCS1900), WCDMA (Bands I, II, III, IV, V, VI, VIII, IX, X and XI) and LTE (FDD Bands 1, 3, 4, 6, 7, 8, 9, 10, 11, 13, 17 and TDD band 38 or 40). The transceiver includes dual 3G and 4G DigRF interfaces to the base band IC, SPI and/or GPOs control PAs, switching regulators and antenna switches. A microcontroller in the transceiver simplifies timing and control.


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