A novel IMSL tunable phase shifter for HMSIW-LWA-fed rectangular patches based on nematic liquid crystal

作者：Fu, JiaHui; Raheem, Odai H.^*

来源：Applied Physics A, 2017, 123(7): 493.

DOI：10.1007/s00339-017-1081-4

• INTEGRATED WAVE-GUIDE

A novel IMSL tunable phase shifter for HMSIW-LWA-fed rectangular patches based on liquid crystal technology is proposed. Rectangular patches are used as radiators for the opening sidewall of the waveguide and matched section part for a unit cell. The transition structure is added for enhancing the efficiency of HMSIW-LWA due to converting most input power to the leaky mode. The novel IMSL phase shifter is used for investigating the tunable dielectric characteristics of N-LC by applying an electric field to the LC cell, which is controlled by the orientation angle of the LC molecules. Theoretically, the orientation angle is derived and solved numerically with the accurate method. As a result, the HMSIW-LWA can be tuned up to +/- 25 degrees for a fixed frequency by tuning the nematic LC with applied voltage from 0 to 20 V. In addition, the realized gain changed from 6 to 9.4 dB for a fixed tuned frequency, and 46 degrees steerable for rest main beams range of the HMSIW-LWA in both forward and backward directions.

• 出版日期2017-7
• 单位哈尔滨工业大学