Single-chip WiMAX MIMO RF transceiver improves receiver SNR
( 01 Aug 2008 )
The MAX2839 is a single-chip, 2.3 to 2.7GHz, WiMAX MIMO RF transceiver that uses a dual-receiver architecture to mitigate RF channel fading, thereby increasing the signal-to-noise ratio (SNR) by as much as 10dB compared to a single-receiver architecture. This improved performance maximizes the data throughput and radio-link range of nomadic and mobile WiMAX subscriber applications in notebook computers, express/PC cards, smartphones, and in-home desktop CPE modems. Developed by Maxim Integrated Products, the device is ideal for mobile WiMAX, Korean WiBro, and other OFDM-based wireless broadband systems.
Both of the two receivers feature a very low noise figure at 2.3dB, -81dBm sensitivity for a 64-QAM signal at 5MHz channel bandwidth, and a 95dB gain control range that is digitally controlled in 1dB steps. On the transmitter, the MAX2839 features a 62dB gain control range, digitally controlled in 1dB steps. It delivers a 0dBm linear output with a 64-QAM signal, greater than -45dBc of sideband suppression, and more than -36dB EVM, while meeting a -70dBr spectral mask.
Maxim Integrated Products, www.maxim-ic.com
Caption
The MAX2839 is said to be the industry's first production-ready, single-chip, zero-IF MIMO RF transceiver for 2.3 to 2.7GHz mobile WiMAX applications.
The MAX2839 is a single-chip, 2.3 to 2.7GHz, WiMAX MIMO RF transceiver that uses a dual-receiver architecture to mitigate RF channel fading, thereby increasing the signal-to-noise ratio (SNR) by as much as 10dB compared to a single-receiver architecture. This improved performance maximizes the data throughput and radio-link range of nomadic and mobile WiMAX subscriber applications in notebook computers, express/PC cards, smartphones, and in-home desktop CPE modems. Developed by Maxim Integrated Products, the device is ideal for mobile WiMAX, Korean WiBro, and other OFDM-based wireless broadband systems.
