Fig. 1.
Switch matrix topology
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Yuzhe Liu, Pengfei Mu, Renjie Gong, Jing Wan, Yulin Zhang, Yuepeng Yan. A 4×2 switch matrix in QFN24 package for 0.5-3 GHz application[J]. Journal of Semiconductors, 2014, 35(12): 125012. doi: 10.1088/1674-4926/35/12/125012
Y Z Liu, P F Mu, R J Gong, J Wan, Y L Zhang, Y P Yan. A 4×2 switch matrix in QFN24 package for 0.5-3 GHz application[J]. J. Semicond., 2014, 35(12): 125012. doi: 10.1088/1674-4926/35/12/125012.
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A 4×2 switch matrix in QFN24 package for 0.5-3 GHz application
doi: 10.1088/1674-4926/35/12/125012
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Abstract
This paper presents a 4×2 switching matrix implemented in the Win 0.5 μm GaAs 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 mm2.-
Keywords:
- switch matrix,
- PHEMT,
- single pole double throw (SPDT),
- decoder,
- QFN24
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References
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