A 4×2 switch matrix in QFN24 package for 0.5–3 GHz application

This paper presents a 4×2 switching matrix implemented in the Win 0.5 μm Ga As pseudomorphic high electron mobility transistor process, it covers the 0.5–3 GHz frequency range. The switch matrix is composed of 4 SPDT switch whose two output ports can simultaneously select the input port and a 4 to 8...

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Bibliographic Details
Published inJournal of semiconductors Vol. 35; no. 12; pp. 128 - 132
Main Author 刘宇辙 牟鹏飞 龚任杰 万晶 张玉林 阎跃鹏
Format Journal Article
LanguageEnglish
Published 01.12.2014
Subjects
GHz
SPDT开关
应用
开关矩阵
芯片封装
输入端口
输出端口
高电子迁移率晶体管
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Summary:This paper presents a 4×2 switching matrix implemented in the Win 0.5 μm Ga As pseudomorphic high electron mobility transistor process, it covers the 0.5–3 GHz frequency range. The switch matrix is composed of 4 SPDT switch whose two output ports can simultaneously select the input port and a 4 to 8 bit digital decoder,both the radio frequency（RF） part and the digital part are integrated into one single chip. The chip is packaged in a low cost QFN24 plastic package. On chip shunt, capacitors at the input ports are taken to compensate for the bonding wire inductance effect. The designed switch matrix shows a good measured performance： the insertion loss is less than 5.5 dB, the isolation is no worse than 30 dB, the return loss of input ports and output ports is better than –10 dB, the input 1 dB compression point is better than 25.6 dBm, and the OIP3 is better than 37 dBm. The chip size of the switch matrix is only 1.45×1.45 mm^2.
Bibliography:Liu Yuzhe,Mu Pengfei,Gong Renjie,Wan Jing,Zhang Yulin,Yan Yuepeng（Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China）
11-5781/TN
This paper presents a 4×2 switching matrix implemented in the Win 0.5 μm Ga As pseudomorphic high electron mobility transistor process, it covers the 0.5–3 GHz frequency range. The switch matrix is composed of 4 SPDT switch whose two output ports can simultaneously select the input port and a 4 to 8 bit digital decoder,both the radio frequency（RF） part and the digital part are integrated into one single chip. The chip is packaged in a low cost QFN24 plastic package. On chip shunt, capacitors at the input ports are taken to compensate for the bonding wire inductance effect. The designed switch matrix shows a good measured performance： the insertion loss is less than 5.5 dB, the isolation is no worse than 30 dB, the return loss of input ports and output ports is better than –10 dB, the input 1 dB compression point is better than 25.6 dBm, and the OIP3 is better than 37 dBm. The chip size of the switch matrix is only 1.45×1.45 mm^2.
switch matrix; PHEMT; single pole double throw（SPDT）; decoder; QFN24
ISSN:1674-4926
DOI:10.1088/1674-4926/35/12/125012