无线电通信技术2016，Vol.42Issue(2)：96-98,3.DOI:10.3969/j.issn.1003-3114.2016.02.25
一种2～4 GHz宽带接收机的小型化前端设计
Small Front-end Design of a 2~4 GHz Wideband Receiver
余江 1曹云建 1熊韬1
作者信息
- 1. 广州海格通信集团股份有限公司，广东 广州510656
- 折叠
摘要
Abstract
For ultra⁃wideband of 2~4 GHz,a method of wideband receiver front⁃end design is proposed,which includes RF channel design,frequency synthesizer design and baseband circuit design.Given the small size of the design,the RF front⁃end adopts a zero⁃IF receiver architecture,uses LTCC filters to realize a noise figure of better than 8 dB,and achieves an output of third⁃order intercept point better than 27 dBm (low⁃noise mode).The frequency synthesizer adopts a VCO integrated PLL chip ADF4351,realizing a SSB phase noise better than ⁃110 dBc/Hz @ 200 kHz,and the scanning speed is better than 40 GHz/s.The baseband circuit uses an ADL5380 quadrature demodulator and a 12⁃bit dual⁃channel AD converter AD9238, which achieves 20 MHz⁃bandwidth simultaneous I/Q dual demodulation.By FPGA or DSP processing,it can be widely used in portable miniaturized monitoring receivers or communications receivers.关键词
2~4 GHz直采接收机/ADF4351/ADL5380Key words
2~4 GHz direct sampling receiver/ADF4351/ADL5380分类
电子信息工程引用本文复制引用
余江,曹云建,熊韬..一种2～4 GHz宽带接收机的小型化前端设计[J].无线电通信技术,2016,42(2):96-98,3.
