Miniature Planar Triple Passband Filter Using Embedded Resonators
A triple passband filter has been proposed using embedded resonators.The proposed filter consists of a main dual feeding structure that embeds four resonators.The topology of the four embedded stepped impedance resonators are designed to control and adjust the return loss and insertion loss of the three passband response characteristics.Two transmission zeros are realized for each passband and the selectivity of the filter is significantly improved.The proposed filter is prototyped using material FR4 substrate with dielectric constant of 4.06,thickness of 1.6mm and loss tangent of 0.014,conductor thickness of 35 1m.The fabricated structure has a miniature dimensional about the size of 15mm by 22 mm.The three passbands are observed at center frequency 1.8 GHz,3.3 GHz and 5.2 GHz respectively with S11 value less than-10 dB.The corresponding passband insertion loss S21 is approximately-1 dB to-5 dB.Attenuation is greater than 20 dB for lower and upper stopband.Measurement and simulation results are discussed and presented.
S.P.Lim K.M.Lum
School of Science and Technology,SIM University,Singapore
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
66-69
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）