TY - JOUR
T1 - Frequency Division Multiplexer With Directional Filters in Multilayer LCP Films at - and -Band
AU - Wang, Mengfa
AU - Zhang, Baoqing
AU - Li, Zhaolin
AU - Wang, Yiming
AU - Guo, Qinglei
AU - Liu, Weihong
AU - Yashchyshyn, Yevhen
AU - Song, Aimin
AU - Zhang, Yifei
N1 - Publisher Copyright:
© 2001-2012 IEEE.
PY - 2022/11
Y1 - 2022/11
N2 - A quasi-reflectionless frequency division multiplexer (FDM) with directional filters (DFs) in multilayer liquid crystal polymer (LCP) substrates is proposed for E- and W-band applications. The in-series cascaded DFs are designed at 74, 84, and 94 GHz, each of which comprises two microstrip lines in the first layer, two pairs of coupling slots in the second layer, and loop resonators in the third layer. The distance between DFs is optimized for suppressing reflection and insertion losses, and the asymmetric distribution of DFs is designed to obtain a low profile. The experimental data demonstrate a 3-dB passband of 8.3%, 8.8%, and 9.7% centered at 74, 84, and 94 GHz, respectively, for the proposed FDM, showing a good match with the simulation. The corresponding insertion loss is measured as 3.63, 3.4, and 2.72 dB at 74, 84, and 94 GHz, respectively. The proposed device may find many applications in multiband and ultrawideband communication and radar systems.
AB - A quasi-reflectionless frequency division multiplexer (FDM) with directional filters (DFs) in multilayer liquid crystal polymer (LCP) substrates is proposed for E- and W-band applications. The in-series cascaded DFs are designed at 74, 84, and 94 GHz, each of which comprises two microstrip lines in the first layer, two pairs of coupling slots in the second layer, and loop resonators in the third layer. The distance between DFs is optimized for suppressing reflection and insertion losses, and the asymmetric distribution of DFs is designed to obtain a low profile. The experimental data demonstrate a 3-dB passband of 8.3%, 8.8%, and 9.7% centered at 74, 84, and 94 GHz, respectively, for the proposed FDM, showing a good match with the simulation. The corresponding insertion loss is measured as 3.63, 3.4, and 2.72 dB at 74, 84, and 94 GHz, respectively. The proposed device may find many applications in multiband and ultrawideband communication and radar systems.
KW - Directional filter (DF)
KW - frequency division multiplexer (FDM)
KW - liquid crystal polymer (LCP)
KW - millimeter wave (mmW)
KW - multilayer circuit
UR - http://www.scopus.com/inward/record.url?scp=85131741735&partnerID=8YFLogxK
U2 - 10.1109/LMWC.2022.3177606
DO - 10.1109/LMWC.2022.3177606
M3 - Article
SN - 1531-1309
VL - 32
SP - 1287
EP - 1290
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 11
ER -