A study of mutual coupling between CP electro-magnetically coupled patch antennas

Tills paper presents a study of mutual coupling between Lil'cu!ur!y polarised electromagnesicolty coupled pa/dl (CP-EMCI') antennas. Two types 0/ antennas having different high dielectric constants driven laver have been addressed. In addition 10 compariSO/l of mllillil! coupling !>e/ween CP-EMCP antennas. comparisons have been made 10 three references. one 0/ which is the recently reported mutual coupling between reduced sur/ace-wave rRSWj 11l1lemlllS.Oilr catculaied rt'.m/ls lIrt' superior 10 others in genera!. and IUII-'eexhibited 6 In II dB weaker than RSWantennas at a cenIre-spacing 0/ n. 7i." in the Esplane. and much lower levels within 2. -i/." centre-spacing in the J-I-plane. These weak mutuol coupling results makes a CP-EMCP array design vel:" promising Keywords-Clrculur polarisation; electromagnetically coupled jllllcll (EMCP) <mtel1llas; mutual coupling.