Is sacred sexuality the same as Tantra

Is "sacred sexuality" the same as Tantra?  Read this article from the dailycamera.com and judge for yourself.  Is it possible for a couple to have a deeply, sensual, spiritual sex experience without it being Tantric?  Does being aware of the subtle body (chakras) and practicing breathing exercises during intimacy constitute as a Tantric experience?   I think it's wonderful that many couples seek to heighten their level of intimacy and closeness by learning and practicing how their chakras interact, and how to stimulate them.  Especially older couples who have to find alternative methods for acheiving sexual pleasure, but should this be considered Tantra?  Or is this really a New Age approach to lovemaking?  What do you think?