This antenna (and many others on the linked page) was evolved by NASA using a genetic algorithm. While highly effective, its design is counter-intuitive.
First, there is the potential of needing less power. Antenna ST5-3-10 achieves high gain (2-4dB) across a wider range of elevation angles. This allows a broader range of angles over which maximum data throughput can be achieved. Also, less power from the solar array and batteries may be required.
Second, the evolved antenna does not require a matching network nor a phasing circuit, removing two steps in design and fabrication of the antenna. A trivial transmission line may be used for the match on the flight antenna, but simulation results suggest that one is not required.
Third, the evolved antenna has more uniform coverage in that it has a uniform pattern with small ripples in the elevations of greatest interest (between 40 and 80 degrees). This allows for reliable performance as elevation angle relative to the ground changes.
If you’ve bought a premium smartphone handset over the past few years, it’s a safe bet that it came equipped with wireless charging technology baked into it. Wireless charging is wicked cool! In the Long, Long Ago, we had to carry one of the many USB cables most of us had kicking around our home […]
Graham Clark, the 17-year-old Florida boy accused of pulling off the big Twitter hack, pled not guilty to charges on Tuesday. During the security breach, top accounts including Democratic presidential candidate Joe Biden and Tesla/SpaceX CEO Elon Musk were taken over to push a bitcoin scam.
In this footage, a supercomputer’s CPU cores — nearly 900 of them — are neatly lined up in the Task Manager. The Doom logo appears, generated by code that targets each core. Then Doom itself plays, each “pixel” generated by thrashing a core with just the right amount of busy work. Max Holt: Finally got […]
Most of us aren’t constantly beset by poor posture. But all it takes is some subtle misalignment while you’re doing serious hours behind the wheel driving or working away at a desk to do a real number on your back. In fact, most of us are so unaware of the mechanics of good posture that […]
From ordering from Amazon to paying bills over the web to something as simple as bottled water, we’re all hooked on modern convenience. We can’t help it. There are just too many modern world advances that save us too much time not to become a creature of comfort and go the easy route. Even if […]
No matter whether you go into the office or work from home, whether you roll out of bed at 5 a.m. or never get up before 9, we all agree a day can on how you feel first thing in the morning when you wake up. If you wake up feeling groggy or out of […]