TY - JOUR
T1 - Two-Section Broadband Couplers with Wide-Range Phase Differences and Power-Dividing Ratios
AU - Liu, Min
AU - Lin, Feng
N1 - Publisher Copyright:
© 2001-2012 IEEE.
PY - 2021/2
Y1 - 2021/2
N2 - A two-section broadband coupler with wide-range phase differences and power-dividing ratios is proposed. Closed-form design equations for the proposed couplers are derived. For verification, two couplers I and II operating at 2 GHz with phase difference of 45° and power-dividing ratio of 1, and phase difference of 60° and power-dividing ratio of 2, respectively, are fabricated and measured. For the coupler I (II), the measured 15-dB return loss and isolation bandwidth is 38.0% (51.5%). The measured bandwidths of the amplitude imbalance < 1 dB and the phase imbalance < 5° of the coupler I (II) are 29.5% (35.5%) and 29.0% (43.0%) with 15-dB return loss and isolation, respectively.
AB - A two-section broadband coupler with wide-range phase differences and power-dividing ratios is proposed. Closed-form design equations for the proposed couplers are derived. For verification, two couplers I and II operating at 2 GHz with phase difference of 45° and power-dividing ratio of 1, and phase difference of 60° and power-dividing ratio of 2, respectively, are fabricated and measured. For the coupler I (II), the measured 15-dB return loss and isolation bandwidth is 38.0% (51.5%). The measured bandwidths of the amplitude imbalance < 1 dB and the phase imbalance < 5° of the coupler I (II) are 29.5% (35.5%) and 29.0% (43.0%) with 15-dB return loss and isolation, respectively.
KW - Broadband
KW - coupler
KW - wide-range phase difference
KW - wide-range power-dividing ratio
UR - http://www.scopus.com/inward/record.url?scp=85097928253&partnerID=8YFLogxK
U2 - 10.1109/LMWC.2020.3041256
DO - 10.1109/LMWC.2020.3041256
M3 - Article
AN - SCOPUS:85097928253
SN - 1531-1309
VL - 31
SP - 117
EP - 120
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 2
M1 - 9290354
ER -