TY - GEN
T1 - Analysis and design of compact wideband baluns on multilayer Liquid Crystalline Polymer (LCP) based substrates
AU - Govind, Vinu
AU - Yun, Wansuk
AU - Dalmia, Sidharth
AU - Sundaram, Venky
AU - White, George
AU - Swaminathan, Madhavan
PY - 2005
Y1 - 2005
N2 - Although the Marchand topology has been used extensively to implement wideband baluns, it's size is prohibitively large at low frequencies. Several methods have been proposed in the past to reduce the balun size, but they also result in a reduction of the percentage bandwidth. This paper presents a novel approach to implement compact wideband baluns, by employing two additional lumped reactances at the output of the Marchand balun. A design methodology for the baluns is proposed that allows simultaneous optimization of size and bandwidth. Using a novel multilayer LCP packaging technology, a wideband balun operating in the 5GHz band has been designed and fabricated. Measurements show a percentage bandwidth of 53% centered around 6.2GHz (for S11<-10dB) at the same time effecting a size reduction of 64% over a conventional Marchand balun.
AB - Although the Marchand topology has been used extensively to implement wideband baluns, it's size is prohibitively large at low frequencies. Several methods have been proposed in the past to reduce the balun size, but they also result in a reduction of the percentage bandwidth. This paper presents a novel approach to implement compact wideband baluns, by employing two additional lumped reactances at the output of the Marchand balun. A design methodology for the baluns is proposed that allows simultaneous optimization of size and bandwidth. Using a novel multilayer LCP packaging technology, a wideband balun operating in the 5GHz band has been designed and fabricated. Measurements show a percentage bandwidth of 53% centered around 6.2GHz (for S11<-10dB) at the same time effecting a size reduction of 64% over a conventional Marchand balun.
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U2 - 10.1109/MWSYM.2005.1516654
DO - 10.1109/MWSYM.2005.1516654
M3 - Conference contribution
AN - SCOPUS:33749236481
SN - 0780388461
SN - 9780780388468
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 543
EP - 546
BT - 2005 IEEE MTT-S International Microwave Symposium Digest
T2 - 2005 IEEE MTT-S International Microwave Symposium
Y2 - 12 June 2005 through 17 June 2005
ER -