CMX998中文资料CFBL Transmitter数据手册CML Micro规格书

描述 Description

A Cartesian Feedback Loop (CFBL) Transmitter improves the efficiency and linearity of transmitters for non-constant envelope modulation systems.
The CMX998 is an integrated solution for a linear based Cartesian Feedback Loop (CFBL) transmitter.
Acting as a direct conversion quadrature mixer from I and Q to RF output, it provides the capability to linearise the Power Amplifier (PA) via feedback from the PA's output.
Included are forward and feedback paths; local oscillator circuitry including loop phase control; an instability detector and uncommitted op-amps for input signal conditioning.
The differential inputs are ideal for direct connection to standard modems and interface ICs such as CML’s CMX7163 QAM Data Modem, CMX7164 Multi Mode Wireless Data Modem, CMX910 AIS Baseband Signal Processor, CMX981 Digital Radio Baseband Processor , CMX983 Analogue Front End (AFE) for Digital Radio and CMX7861 Programmable Baseband Interface IC

特性 Features

· Frequency Range: 30MHz to 1GHz
· Wideband Noise: ‑148dBc/Hz
· C-BUS (SPI Compatible) Serial Interface
· Gain Control, Error Amplifier
· Up-Converter Forward Path
· Down-Converter for Feedback Linearisation
· 360o Loop Phase Shift Control
· DC Offset Measurement Output
· Open-Loop Function, Instability Detector
· Linearisation Gains of 30dB or more Achievable
· Flexible Digital Interface

应用 Application

· TETRA/TETRA2 Terminals
· APCO P25 Phase 2
· Software Defined Radio (SDR)
· Aviation Systems
· Mobile Satellite Terminals
· Linear Modulation Schemes: QPSK, pi/4 DQPSK, 8PSK, QAM, OFDM, F4FM

简介

CMX998属于RF/IF射频/中频RFID的RFIC模块。由制造生产的CMX998RF 其它 IC 和模块RF 其它 IC 和模块产品系列包含各种独特、专门或特定用途的产品，可与 RF、IF 和微波无线电应用结合使用。示例包括 AM/FM 调谐器和接收器、偏置网络、基带处理器、计数器、数字可调电容器、下变频器、倍频器、移相器、前置分频器、端接器、上变频器、VCO 等。