PM8800 WiZIRD 2x2集成了兩個(gè)獨(dú)立的無(wú)線電通路（2TX和2RX），可工作在2.3-2.7GHz或3.3-3.8GHz頻段，支持IEEE 802.16-2004 和IEEE 802.16e-2005標(biāo)準(zhǔn)規(guī)范，可用于固定和移動(dòng)WiMAX以及PCMCIA卡，PC Express 卡以及USB Dongles,CPE以及Femto基站.本文介紹了PM8800的主要性能和優(yōu)點(diǎn)，方框圖，應(yīng)用以及參考設(shè)計(jì)。
The PM8800 WiZIRD 2x2 is an ultra-integrated single-chip WiMAX Zero Intermediate Frequency (ZIF) Radio Device. It is designed for Fixed and Mobile WiMAX applications and supports both IEEE 802.16-2004 and IEEE 802.16e-2005 standard requirements. The PM8800 WiZIRD 2x2 has two independent radio paths (2Tx and 2Rx) and supports operation in the 2.3 - 2.7 GHz or the 3.3 - 3.8 GHz licensed bands.
The PM8800 WiZIRD 2x2 enables manufacturers of WiMAX Femto BS, CPE, and MS User Equipment to build low-cost, high-performance, 2x2 MIMO equipment today.
超高集度：
Integration of key transmit and receive path components dramatically reduces the cost of materials and manufacturing, at the same time improving system reliability.
The PM8800 WiZIRD 2x2 features:
Two independent radio paths (2Tx and 2Rx) supporting all Wave 2 MIMO features and enabling the radio path for uplink MIMO enhancements
Zero-IF architecture removes the cost associated with external SAW filters
Integrated DCXO supports AFC with no additional components, except for a low-cost 40 MHz crystal
Integrated synthesizer loop filter improves noise immunity and reduces board space requirements 40 MHz reference is available for use by the Baseband MAC Processor
Diagnostic loopback circuits for radio calibration and baseband diagnostics
Integrated DAC/ADCs for digital I/Q designs allow Baseband MAC Processors to scale with Moores Law without being burdened with analog circuits
Integrated transmit baluns, digital temperature monitor, and Rx DC offset capability
設(shè)計(jì)靈活性：
Design flexibility is essential for equipment manufacturers, allowing them to react and adapt to changes in market requirements with minimal changes.
For flexibility, the PM8800 WiZIRD 2x2 includes:
Multi-band support for operation in the 2.3 - 2.7 GHz or the 3.3 - 3.8 GHz licensed bands, enabling system designs that are suitable for use across multiple geographies
The choice of selecting an analog or digital I/Q interface to an external Baseband MAC Processor. This lets designers use the bestin- class Baseband MAC Processor or ASIC available both now and in the future. The digital I/Q interface is compliant with JEDEC JESD207, Radio Front End - Baseband Digital Parallel Interface standard. Configurable channel bandwidths of 3.5 MHz, 5 MHz, 7 MHz, 8.75 MHz, 10 MHz, 14 MHz, and 20 MHz
Programmable transmitter gain control for mobile applications
可靠性性能：
PMC-Sierra has supplied and supported high performance semiconductor solutions to the communications industry for over a decade. The same performance philosophy applies to our WiMAX products.
Transmit Path
EVM (measured after integrated balun): -36 dB @Pout = 0 dBm (2.5 GHz), -34 dB @Pout = 0 dBm (3.5 GHz)
Tx power control range: 70 dB (1 dB steps)
-140 dBm/Hz noise floor
Receive Path
EVM: -36 dB (2.5 GHz), -34 dB (3.5 GHz)
RFIC noise figure: 2.9 dB (2.5 GHz), 3.3 dB (3.5 GHz)
Rx gain control: 93 dB range (1.5 dB steps), 106 dB max gain
Adjacent channel rejection: 26 dB (64 QAM)
Alternate channel rejection: 34 dB (64 QAM)
器件通用信息：
Control interface conforms to industry standard SPI specifications used by Baseband MAC Processors
1.8V ± 5% and 2.5V ± 5% supply voltages Industrial temperature range (-40 °C to +85 °C)
108-pin Dual Row 0.65 mm pitch Micro Lead Frame (MLF/QFN) (11 x 11 mm body)
應(yīng)用：
PCMCIA Cards, PC Express Cards, USB Dongles
Customer Premises Equipment (CPE)
Femto Base Stations
Femtocell 基站和移動(dòng)基站通用設(shè)計(jì)：
WiZIRD 2Tx/2Rx 方框圖(PM8800)
PM8800應(yīng)用方框圖：
