Open AccessContinuously tunable crossover based on HMSIW
Author(s) -
Cui Qian,
Lin Feng
Publication year - 2017
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2017.3221
Subject(s) - passband , crossover , return loss , insertion loss , materials science , transmission loss , optics , capacitor , transmission (telecommunications) , port (circuit theory) , range (aeronautics) , optoelectronics , electronic engineering , physics , band pass filter , telecommunications , engineering , computer science , electrical engineering , voltage , antenna (radio) , artificial intelligence , composite material
A frequency‐tuning crossover based on half‐mode substrate‐integrated waveguide (HMSIW) is presented for the first time. Two HMSIW transmission lines are parallelly arranged to form the four‐port crossover. Three tunable capacitors placed between the HMSIW transmission lines are used to obtain the tunable passband. For verification, both simulated and measured results are given and good agreement between the simulation and measurement is observed. The measured passband can be tuned in a frequency range from 2.2 to 5.0 GHz (tuning range of 78%) with better than 19 dB return loss and 15 dB isolation, while the insertion loss varies from 0.93 to 1.97 dB.