I didn't know about the antenna until reading this post...
After dying many times I did the following -
Shot him up with the fletchette launcher until shields went down, then force speed, fast saber style and slashed him up from behind. Retreated when shields came back up. Shot him again until the shields went down and dropped all of my portable assault sentries (I had the maximum capacity of them, I think it's 5), put on speed, and started cutting him up again
Mmmmm, it was almost like having my Diablo 2 minions with me again.