TY - GEN
T1 - A New Waveguide Slot Array Antenna with High Isolation and High Antenna Bandwidth Operation on Ku- and K- Bands for Radar and MIMO Systems
AU - Alibakhshikenari, Mohammad
AU - Virdee, Bal Singh
AU - See, Chan H.
AU - Abd-Alhameed, Raed
AU - Falcone, Francisco
AU - Limiti, Ernesto
N1 - Publisher Copyright:
© 2018 European Microwave Association.
PY - 2018/11/20
Y1 - 2018/11/20
N2 - In this paper a novel technique is proposed to reduce the mutual coupling between the radiating elements of a waveguide slot array antenna. This is achieved by inserting slots between the waveguide oval shaped slots. The reference waveguide array antenna used in the study was implemented with an arrangement of 3×5 oval shaped slots. By incorporating linear slots between the radiating oval shaped slots in both horizontal and vertical directions significant reduction in mutual coupling is achieved of 24 dB, 20 dB, and 32 dB in the frequency bands of 12.95-13.75 GHz (Ku-band), 15.45-16.85 GHz (Ku-band), and 18.85-23.0 GHz (K-band), respectively. Edge-to-edge distance between the slot radiators is 0.2λ, which is at least twofold smaller than conventional array antennas. With the slot isolators the antenna's minimum and maximum gains improve by 53.5% and 25.5%, respectively. In addition, the radiation patterns are unaffected. The proposed method is simple to implement, low cost solution mass production.
AB - In this paper a novel technique is proposed to reduce the mutual coupling between the radiating elements of a waveguide slot array antenna. This is achieved by inserting slots between the waveguide oval shaped slots. The reference waveguide array antenna used in the study was implemented with an arrangement of 3×5 oval shaped slots. By incorporating linear slots between the radiating oval shaped slots in both horizontal and vertical directions significant reduction in mutual coupling is achieved of 24 dB, 20 dB, and 32 dB in the frequency bands of 12.95-13.75 GHz (Ku-band), 15.45-16.85 GHz (Ku-band), and 18.85-23.0 GHz (K-band), respectively. Edge-to-edge distance between the slot radiators is 0.2λ, which is at least twofold smaller than conventional array antennas. With the slot isolators the antenna's minimum and maximum gains improve by 53.5% and 25.5%, respectively. In addition, the radiation patterns are unaffected. The proposed method is simple to implement, low cost solution mass production.
KW - mutual coupling suppression
KW - slot isolators
KW - slot radiators
KW - Waveguide slot array antennas (WSAA)
UR - https://www.scopus.com/pages/publications/85059802858
U2 - 10.23919/EuMC.2018.8541595
DO - 10.23919/EuMC.2018.8541595
M3 - Conference Publication
AN - SCOPUS:85059802858
T3 - 2018 48th European Microwave Conference, EuMC 2018
SP - 1421
EP - 1424
BT - 2018 48th European Microwave Conference, EuMC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 48th European Microwave Conference, EuMC 2018
Y2 - 25 September 2018 through 27 September 2018
ER -