Design Procedure for 5G/IoT Multiple-Port Cavity-Backed Antennas
- Resource Type
- Conference
- Authors
- Molins-Benlliure, Jaime; Antonino-Daviu, Eva; Cabedo-Fabres, Marta; Ferrando-Bataller, Miguel
- Source
- 2021 15th European Conference on Antennas and Propagation (EuCAP) Antennas and Propagation (EuCAP), 2021 15th European Conference on. :1-5 Mar, 2021
- Subject
- Aerospace
Communication, Networking and Broadcast Technologies
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Couplings
Visualization
Design methodology
Resonant frequency
Europe
Bandwidth
Antenna feeds
antennas
cavity-backed antenna
MIMO
5G base station
characteristic modes
- Language
The design procedure of a multiple-port cavity-backed antenna is presented using characteristic modes analysis (CMA). This methodology ease the design process, starting from the modes of a squared ground plane with length a, and then analyzing how they change when the plane is reshaped into a (a-2b) x (a-2b) x b cavity. Characteristic modes analysis gives a visual insight establishing some constrains for setting the optimum height (b) of the cavity and the optimum feeding configuration of the ports. A complementary full-wave analysis is also introduced for obtaining additional information regarding the input impedance and isolation between the ports. A 2-port cavity-backed antenna with 4.1 GHz (2.9-7 GHz) impedance bandwidth and 15 dB isolation has been optimized with the proposed procedure.