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New RF chipsets from TI support WiMAX, WiBro apps

Posted: 27 Apr 2005 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? ti? rf chipset? trf11xx? trf12xx?

Expanding its portfolio of complete wireless signal-chain solutions for broadband wireless access, Texas Instruments Inc. (TI) presented three RF chipsets that are designed to support IEEE 802.16d/e standard RF front end for wireless base stations, access points as well as equipment backhaul, point-to-point microwave and public safety band applications.

These new chipsetsthe TRF11xx chipset at 2.5GHz, the TRF12xx at 3.5GHz and the TRF24xx at 5.8GHz, are capable of supporting both emerging WiMAX and WiBro applications based on the IEEE 802.16 standard, as well as the more traditional fixed wireless access.

"TI is working with equipment providers to build a solid foundation to deploy any type of broadband infrastructure demanded in the future," said David Briggs, TI's analog wireless infrastructure business manager. "We understand that as carriers look to incorporate the newest applications that they expect technologies, such as 802.16, to be readily available," Briggs added.

Both the TRF112xx at 2.5GHz and the TRF122xx at 3.5GHz consist of four chips, each with fully integrated super heterodyne receivers and transmitters. These RF devices are capable of supporting Frequency Division Duplex (FDD), Half Frequency Division Duplex (HFDD) and Time Division Duplex (TDD) modes with a real interface at low IF to the data conversion subsystem. They are compliant with today's demanding mask requirements, while the receivers feature excellent sensitivity and blocker suppression," added TI.

The TRF11xx at 2.5GHz and the TRF12xx at 3.5GHz are also complemented by the optimized power amplifiersTRF1123 and TRF1223. Supporting a range of frequencies between 2.1GHz to 2.7GHz and 3.3GHz to 3.8 GHz, these power amplifiers provide output third order intercept point (OIP3) of 45dBm or better, enabling the support of complex OFDM (orthogonal frequency division multiplexing) signals. These power amplifiers can also be used as driver amplifiers in applications requiring larger output power.

The company added that it's TRF2432 and TRF2436 heterodyne transceiver chipset is the most integrated solution available with two chips. Consisting of an IF and RF transceiver, the ICs support 4.9GHz to 5.9GHz air interface frequency band. The chipset also supports TDD mode with complex I/Q interface.

The TRF11xx at 2.5GHz, the TRF12xx at 3.5GHz and the TRF24xx at 5.8GHz are already available for sampling.

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