Premium
Wideband impedance transformer with out‐of‐band suppression characteristics
Author(s) -
Kim Phirun,
Chaudhary Girdhari,
Jeong Yongchae
Publication year - 2014
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.28664
Subject(s) - wideband , return loss , transformer , microwave , electrical impedance , electrical engineering , frequency band , engineering , quarter wave impedance transformer , electronic engineering , materials science , impedance matching , acoustics , physics , telecommunications , damping factor , voltage , antenna (radio)
This article presents the design of a wideband impedance transformer with out‐of‐band suppression characteristics. The out‐of‐band suppression characteristics are obtained by loading several transmission zeros at both the lower and upper stop‐bands. For experimental validation, a 50‐to‐25 Ω transformer has been implemented at a center frequency (f 0 ) of 2.6 GHz. The measured results were in good agreement with simulations, showing a return loss better than 20 dB over 0.92 GHz (2.1–3.02 GHz) and an out‐of‐band suppression better than 18 dB over DC to 1.42 and 3.8 to 6.65 GHz. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2612–2616, 2014
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom