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RF Interconnection Technique of MMIC Microwave Switch Matrix for 60 dB On-to-off Isolation  

Noh Youn-Sub (Global Area Wireless Technology Research Group, ETRI)
Jang Dong-Pil (Global Area Wireless Technology Research Group, ETRI)
Yom In-Bok (Global Area Wireless Technology Research Group, ETRI)
Publication Information
Abstract
The isolation performance of the S-band single-pole single-throw(SPST) monolithic microwave integrated circuit (MMIC) switch with two different RF-interconnection approaches, microstrip and grounded coplanar waveguide(GCPW) lines, are investigated. On-to-off isolation is improved by 5.8 dB with the GCPW design compared with the microstrip design and additional improvement of 6.9 dB is obtained with the coplanar wire-bond interconnection(CWBI) at a 3.4 GHz. The measured insertion loss and third-order inter-modulation distortion(IMD3) are less than 1.94 dB over $3.2{\sim}3.6\;GHz$ and greater than 64 dBc.
Keywords
GCPW; MMIC; Microstrip; SPST; Switch; Microwave Switch Matrix;
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  • Reference
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