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Dual wide‐band miniaturized negative group delay circuit using open circuit stubs
Author(s) -
Taher Hany,
Farrell Ronan
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30979
Subject(s) - microstrip , resistor , multi band device , group delay and phase delay , stub (electronics) , electrical engineering , physics , electronic engineering , topology (electrical circuits) , optoelectronics , bandwidth (computing) , engineering , telecommunications , voltage , antenna (radio)
In this letter, dual band negative group delay circuit (DBNGDC) utilizing a couple of one quarter guided wave length (λ g4 ) open circuited stubs (OCSs) is presented. The centre frequencies ( f 01,2 ) are fully controlled with the stub lengths. On the other hand, the target negative group delay (NGD) is obtained using couple of resistors ( R 1,2 ) that connect each OCS to the main microstrip line. The designed DBNGDC accomplishes 52% size diminution compared with smallest size has ever been achieved before. Moreover, 0.2 and 0.4 GHz zero‐NGD bandwidths (BW) are achieved.