Why is Apple looking to hire antenna engineers?

On its web site, Apple has posted three job opportunities for an antenna engineer for the iPhone/iPad. The posts seek someone who can "Define and implement antenna system architecture to optimize the radiation performance for wireless portable devices. The candidate should be able to design antennas suitable for wireless handheld devices with excellent radiation performance, including TRP, TIS, SAR, and EMC... create test plans, execute them, publish test reports, provide feedback to the other design engineers, and lead some of the manufacturing of antenna." Apple wants someone with "strong problem solving skills". The positions are open in Santa Clara Valley, and are dated back to June 23rd-the day before the official launch of the iPhone 4. Now, we would bet that three antenna engineers don't come cheaply, so wouldn't it be more cost efficient for Apple just to hire someone to show iPhone 4 users how to hold their phone properly?

Apple iPhone 4 Specifications | Review

source: Apple (1), (2), (3) via Engadget