I am not quite sure how to use google. Please said you can let goole sort it for you.I am not sure why the term antenna is important. FWIW, I am also used to the term antenna complex.
The antenna pigments "live" on the the thylakoid membrane in a protein matrix and collectively are known as the antenna pigments (or antenna complex)- carotenoids, chlorophyll B , and chlorophyll A. In that order, from light source >......-> "inside" (for higher plants).
If this helps at all, when I taught Botany Labs as a grad student in the mid-1960's the term antenna complex did not exist in any of the textbooks we had on the shelf. AFAIK. So, 1970 is not a bad guess.
You also need to realize that in 1970 getting from research to a set of papers, then to standard textbooks was a huge, time-consuming effort. Unlike today, there was no internet arXiv resource to publish scientific results much more quickly. So, that term may have lurked in obscurity for several years.
This probably is why you are having problems with finding a definitive date.