Open AccessBroadband substrate‐integrated waveguide T‐junction with arbitrary power‐dividing ratio
Author(s) -
Li Teng,
Dou Wenbin
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.3928
Subject(s) - broadband , bandwidth (computing) , materials science , optoelectronics , electrical impedance , power (physics) , waveguide , power dividers and directional couplers , substrate (aquarium) , electrical engineering , optics , computer science , physics , engineering , telecommunications , oceanography , quantum mechanics , geology
A novel broadband substrate‐integrated waveguide (SIW) T‐junction with an arbitrary power‐dividing ratio is proposed. Three inductive posts are designed to adopt flexibility for the equal output T‐junction to obtain a wide impedance bandwidth. To realise the unequal power‐dividing ratio over a wide bandwidth, the SIW coupler is integrated with corner structures and a novel T‐junction structure is formed. Three T‐junctions with different power division ratios (1:1, 1:4 and 1:8) at a centre frequency of 6 GHz are simulated, fabricated and measured. The measured bandwidths are 60, 53 and 63.3%, respectively.