@article{oai:ynu.repo.nii.ac.jp:00010070,
 author = {Iwazaki, Sho and Ichige, Koichi},
 issue = {7},
 journal = {IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences},
 month = {Jul},
 note = {We have developed a novel array configuration based on the combination of sum and difference co-arrays. There have been many studies on array antenna configurations that enhance the degree of freedom (DOF) of an array, but the maximum DOF of the difference co-array configuration is often limited. With our proposed array configuration, called “sum and difference composite co-array”, we aim to further enhance the DOF by combining the concept of sum co-array and difference co-array. The performance of the proposed array configuration is evaluated through computer simulated beamforming.},
 pages = {918--925},
 title = {Extended Beamforming by Sum and Difference Composite Co-Array for Real-Valued Signals},
 volume = {E102A},
 year = {2019}
}