Date Added: Dec 2011
This paper presents the design and analysis of an RF transmit/receive switch in CMOS for Multiple-Input Multiple-Output (MIMO) wireless systems. First, both full-range and abridged quad-Pole quad-Throw (4P4T) switch architectures for MIMO systems with four antenna elements are comparatively studied. The full-range 4P4T switch is selected for circuit implementation because of its more switching states and lower insertion loss. The series connection and body-floating techniques are then employed in the circuit design to achieve an acceptable performance.