haha what city are you in / what college do you go to? I know how you feel, I switched into Math from Biz / CS and I like having that Math background (great for ML / NLP stuff) and I feel badass amongst the math majors, 80% of which can't code nearly as good as I can.
With regards to ideas, I def. think you'll come up with something. NObody is born an ideas person, trust me. Its def better to go from tech to tech + idea, then be the biz dude who just sits around and says "i have this idea for an app... ALL I NEED ARE DEVELOPERS". (aka that was me 2 years ago, so I know how it feels). Just follow lots of startups, keep reading Hacker News, etc. The key is to find a startup idea around some pain point YOU have (ideal situation, makes for the most passion / follow through) or something you know others have. You did the wireless antenna thing cuz of a pain point you have, etc.
I'm not sure exactly what you mean by 'born' but insofar as people are 'born hackers' people are also born idea people. The special ones are people who are both.
People are born creative, sure, but not necessarily as someone who simply applies their creativity to startups / startup ideas. Both idea and product development can be learned over time thankfully. Just one year ago I was a business guy, and I knew no code. Now I'm learning machine learning, have built several web applications, LOVE the unix shell, etc. All in under a year.
With regards to ideas, I def. think you'll come up with something. NObody is born an ideas person, trust me. Its def better to go from tech to tech + idea, then be the biz dude who just sits around and says "i have this idea for an app... ALL I NEED ARE DEVELOPERS". (aka that was me 2 years ago, so I know how it feels). Just follow lots of startups, keep reading Hacker News, etc. The key is to find a startup idea around some pain point YOU have (ideal situation, makes for the most passion / follow through) or something you know others have. You did the wireless antenna thing cuz of a pain point you have, etc.