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[原创] Linear LTC5552 3-20GHz微波混频器解决方案

关键词:无线通信 微波收发器 5G宽带无线接入 测试设备 LTC5552

时间:2017-08-25 10:07:03       作者:Linear       来源:中电网

Linear公司的LTC5552是宽带DC-6GHz IF的3-20GHz高性能微波双平衡无源混频器,可用作频率下变换或上变换.器件具有高IIP3,在10GHz为22.5dBm,17GHz为18.3dBm,10GHz的变换损耗8dB,工作电源3.3V/132mA,主要用在5G宽带无线接入,微波收发器,无线回程线路,点对点微波,相阵列天线,C,X和Ku波段RADAR,测试设备和卫星调制解调器.本文介绍了LTC5552主要特性,功能框图,标准测试电路图和应用电路以及演示电路DC2668A主要特性,上/下变换混频双音测量建立图,电路图和材料清单.

The LTC®5552 is a high performance, microwave doublebalanced passive mixer that can be used for frequencyupconversion or downconversion. The device is similarto the LTC5553, but with a broadband, differential DC to6GHz IF port. The LTC5552 is recommended for applicationswhere the IF frequency range extends below 500MHz.For applications where the IF frequency is always above500MHz, the LTC5553 is recommended, since it includesan integrated IF balun.

The mixer and integrated RF balun are optimized to coverthe 3GHz to 20GHz RF frequency range. The integrated LOamplifier is optimized for the 1GHz to 20GHz frequencyrange, requiring only 0dBm drive.The part delivers high IIP3 and P1dB, low LO leakage andhigh integration in a small package.

LTC5552主要特性:

Integrated LO Buffer: 0dBm LO Drive
50Ω Wideband Matched RF and LO Ports
Wide IF Bandwidth: DC to 6GHz
Upconversion or Downconversion
High IIP3:
+22.5dBm at 10GHz
+18.3dBm at 17GHz
+14.6dBm Input P1dB at 10GHz
8dB Conversion Loss at 10GHz
3.3V/132mA Supply
Fast Turn ON/OFF for TDD Operation
3mmx2mm, 12-Lead QFN Package

LTC5552应用:

5G Broadband Wireless Access
Microwave Transceivers
Wireless Backhaul
Point-to-Point Microwave
Phased-Array Antennas
C, X and Ku Band RADAR
Test Equipment
Satellite Modems

图1.LTC5552功能框图

图2.LTC5552标准测试电路图

图3.LTC5552典型应用框图

演示电路DC2668A

Demonstration circuit 2668A is optimized for evaluationof the LTCR5552 passive double-balanced mixer. Its RFport is broadband matched from 3GHz to 20GHz, and the internal LO amplifier, requiring only a 0dBm drive level,is broadband matched to 50Ω from 1GHz to 20GHz with10dB Return Loss. The differential IF output is usablefrom DC to 6GHz. The LTC5552 can be used for upconvertingand downconverting applications.

图4.演示电路DC2668A外形图

图5.DC2668A下变换混频双音测量建立图

图6.DC2668A上变换混频双音测量建立图

图7.演示板DC2668A电路图
演示板DC2668A材料清单:

详情请见:
http://cds.linear.com/docs/en/datasheet/5552f.pdf
http://cds.linear.com/docs/en/demo-board-manual/dc2668afa.pdf
5552f.pdf
dc2668afa.pdf
DC2668A.zip

 

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