Dual function flexible coplanar waveguide for feeding antenna of balanced structure

• Published in: 2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Vol. 1; pp. 01 - 03
• Main Authors: Lv, Xianyang, Zhang, Yongwei, Shi, Quan, Fu, Yanwei, Xing, Huijuan, Temiz, Murat
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-12-2021
• Subjects: Antenna feeds; Antenna theory; Bending; Coplanar waveguides; Planar arrays; Receiving antennas; Transmitting antennas
• ISSN: 2643-4687
• DOI: 10.1109/ISAPE54070.2021.9753170

A flexible coplanar waveguide (CPW) design is presented suitable for feeding planar antenna with a balanced structure. Two features are provided by the flexible design, transition from balance on the antenna side to unbalance on the receiver side; transformation of characteristic input impedance of the antenna to the value of a standard load. It is essential for the CPW to be bended to fit the purposes hence the effect of bending of CPW on the transmission performance and method to feed planar antenna are investigated. The common mode propagation due to the inserted feedline is observed and the solution to eliminate the auxiliary common-mode effect in the structure is also discussed.