Jenkinson says the tight-knit nature of the squad is a major asset as the season enters its closing stages.
"I have only been at Charlton before, but the team spirit here is fantastic," he told Arsenal.com.
"Everyone gets on, which is quite rare in football. Often you have cliques of people or people who argue all the time, but we all get on well here.
"That is a big thing and it boosts the morale of the team. We are all friends, which helps on the pitch because you have that faith and trust in one another."