adi公司的admv1014是采用硅锗(sige)工艺术设计的宽带微波下变频器,针对点到点微波无线电设计进行优化,工作频率范围为 24.5 ghz 至 43.5 ghz.该下变频器提供两种频率转换模式。该器件能够从正交解调直接变频为基带 iq 输出信号,并从镜像抑制下变频为复中频输出载波频率。基带输出可采用直流耦合,特别是iq 输出将使用足够低的高通转折频率进行交流耦合,以确保充足的解调精度.spi 接口可对正交相位进行微调,使用户能够优化 iq 解调性能。另一方面,可以禁用基带 iq 输出,且 i/q 信号可通过片内有源巴伦提供两个单端复中频输出(800至6000mhz)。用作镜像抑制下变频器时,不需要的镜像项通常会被抑制,比所需边带低 25dbc.
高度集成的admv1013微波上变频器和admv1014微波下变频器非常适用于工作在28 ghz和39 ghz 5g无线基础设施频带下的微波无线电平台。这些转换器具有1ghz带宽,以及oip3高于20 dbm的上变频器,可以支持严苛的调制方案(如1024qam),可支持多gb无线数据。同时该芯片组也支持其他应用如卫星和地面接收站宽带通信链路,航空无线电,rf测试设备和雷达系统。本文介绍了admv1014主要特性,功能框图以及评估板admv1014-evalz主要特性,配置图,实验室建立图,电路图,材料清单和pcb设计图。
the admv1014 is a silicon germanium (sige), wideband, microwave downconverter optimized for point to point microwave radio designs operating in the 24 ghz to 44 ghz frequency range.
the downconverter offers two modes of frequency translation. the device is capable of direct quadrature demodulation to baseband inphase (i)/quadrature (q) output signals, as well as image rejection downconversion to a complex intermediate frequency (if) output carrier frequency. the baseband outputs can be dc-coupled, or, more typically, the i/q outputs are ac-coupled with a sufficiently low high-pass corner frequency to ensure adequate demodulation accuracy. the serial port interface (spi) allows fine adjustment of the quadrature phase to allow the user to optimize i/q demodulation performance. alternatively, the baseband i/q outputs can be disabled, and the i/q signals can be passed through an on-chip active balun to provide two single-ended complex if outputs anywhere between 800 mhz and 6000 mhz. when used as an image rejecting downconverter, the unwanted image term is typically suppressed to better than 30 dbc below the wanted sideband. the admv1014 offers a flexible local oscillator (lo) system, including a frequency quadruple option allowing up to a 41 ghz range of lo input frequencies to cover a radio frequency (rf) input range as wide as 24 ghz to 44 ghz. a square law power detector is provided to allow monitoring of the power levels at the mixer inputs. the detector output provides closed-loop control of the rf input variable attenuator through an external op amp error integrator circuit option.
the admv1014 downconverter comes in a compact, thermally enhanced, 5 mm × 5 mm lga package. the admv1014 operates over the −40℃ to +85℃ case temperature range.
admv1014主要特性:
wideband rf input frequency range: 24 ghz to 44 ghz
2 downconversion modes
direct conversion from rf to baseband i/q
image rejecting downconversion to complex if
lo input frequency range: 5.4 ghz to 10.25 ghz
lo quadrupler for up to 41 ghz
matched 50 ω, single-ended rf input, and complex if outputs
option between matched 100 ω balanced or 50 ω single-ended lo inputs
100 ω balanced baseband i/q output impedance with adjustable output common-mode voltage level
image rejection optimization
square law power detector for setting mixer input power
variable attenuator for receiver power control
programmable via a 4-wire spi interface
32-terminal, 5 mm × 5 mm lga package
admv1014应用:
point to point microwave radios
radar, electronic warfare systems
instrumentation, automatic test equipment (ate)
图1.admv1014功能框图
评估板admv1014-evalz
the admv1014-evalz evaluation board incorporates the admv1014 with a microcontroller, low dropout (ldo) regulators, and nanodac® to allow quick and easy evaluation of the admv1014. the microcontroller allows the user to configure the admv1014 register map through the ace software. the ldo regulators allow the admv1014 to be powered on by a single supply and offer good power supply ripple rejection. the nanodac allows the user to attenuate the rf power going into the mixer of admv1014 without using an external power supply.
for full details on the admv1014, see the admv1014 data sheet, which must be consulted in conjunction with this admv1014-evalz evaluation board user guide when using this evaluation board.
评估板admv1014-evalz主要特性:
full featured evaluation board for the admv1014
on-board usb for spi control
5 v operation
ace software interface for spi control
图2.评估板admv1014-evalz外形图
图3.评估板admv1014-evalz配置图
图4.评估板admv1014-evalz顶视图
图5.评估板admv1014-evalz i/o模式实验室建立图
图6.评估板admv1014-evalz if模式实验室建立图
图7.评估板admv1014-evalz电路图-admv1014连接图
图8.评估板admv1014-evalz电路图-mcu和电平转换连接图
图9.评估板admv1014-evalz电路图-ldo稳压器连接图
评估板admv1014-evalz材料清单:
图10.评估板admv1014-evalz:左:正面;右:背面
图11.评估板admv1014-evalz pcb设计图:顶层
图12.评估板admv1014-evalz pcb设计图:第二层电压
图13.评估板admv1014-evalz pcb设计图:第三层
图14.评估板admv1014-evalz pcb设计图:底层
【火爆推进中】电子工程师的梦想!手把手DIY专属实验室
米尔科技 ATMEL AT91SAM9G45 ARM9单板机概述
【启扬方案】智能化解锁“智慧出游”新模式
物联网技术在智慧医院的应用
各主要尺寸液晶面板试探性涨价亦难以持续
ADI ADMV1014 24-44GHz宽带微波下变频器解决方案
关于基于DSP的同步相量测量装置的研究
Intel 14nm产能不足还是没有解决,SSD市场也受到影响
总结高速数字电路如何抑制噪声
音圈电机模组在医疗器械中的应用
直击隐身战斗机歼20首次公开亮相
壳牌汽车环保马拉松×人工智能小冰:携手前沿科技,拥抱能源未来
车联网产业发展专委会第二次全体会议在河北雄安新区召开
DS3144成帧器与DS3154线路接口单元(LIU)的连接
AIOT为安防拓展更大市场 推动万物互联时代的到来
一种新型的微流控-电化学检测系统
中性导体与保护导体截面选择要求有哪些
武汉凯迪正大KDRB-ZC变压器绕组阻抗测试仪
汽车市场正在成为半导体行业最重要的市场
尘埃落定!Intel官网宣布退出 5G基带业务