THE NOVEL METAMATERIAL CRLH BUILDING-BLOCK FOR A MULTI-POLE BANDPASS FILTER AND THE IMPROVED CHANNEL SELECTIVITY BY ITS CROSS-COUPLING VERSION FOR COMPACT GBPS WIRELESS TRANCEIVERS

摘要

PURPOSE: A new metamaterial CRLH(Composite Right/Left-Handed) basic structure for a multi-pole bandpass filter of a compact Gbps wireless transceiver and an improving method of channel selectivity by cross linking the same are provided to implement the bandpass filter with excellent skirt characteristics and high isolation by using the cross linking for transmission zero which maintains the whole size. CONSTITUTION: A microstrip line is connected between an input port and an output port. The microstrip line includes a fist interdigital line and a second interdigital line. The first interdigital line is connected to the input port in series. The second interdigital line is connected to the output port in series. The first interdigital line is parallel to the second interdigital line.