antennae
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Buckeyes embed antennas in clothes, couture to improve radio reception?
We like what's in our wardrobe to be multifunctional, and we've seen threads do double duty as keyboards, flashlights and even drum kits in our day. Now, researchers at Ohio State have come up with a way to turn the shirt on your back into an omnidirectional antenna to boost radio reception. To do so, they etched brass wires into plastic film to create flexible antennae, and stitched 4 of them into the shoulders, chest and back of a vest. Using a computer controller the size of a deck of cards clipped to the wearers belt, the system senses body movement and activates the appropriate antenna to get the best signal. You see, antennae don't work so well when touching human skin -- as any iPhone 4 owner can attest -- and the multiple antenna system alleviates that problem while providing "significantly greater signal strength" than a standard antenna. The researchers see the technology having great appeal for the military, law enforcement, and emergency personnel, but here's hoping they make a consumer version, too. It'd be nice to eliminate all those cell-service dead spots by simply donning a jacket, right?
Droid X ad pokes fun at iPhone 4 antenna troubles
The world of corporate cheap shots has today been enriched in its number with one supersized ad for one supersized phone. BGR reports that Motorola took out a full-page spread in the New York Times on this final day of June, which was ostensibly dedicated to promoting the positives of its mighty Droid X. But Moto has also followed in the footsteps of Nokia in making a not so subtle jab at the latest king of the smartphone realm. According to the ad, one of the most important things about the Droid X is that: "It comes with a double antenna design. The kind that allows you to hold the phone any way you like and use it just about anywhere to make crystal clear calls." Glad we got that established -- next Moto will be telling us the alarm clock on its phones works just fine too. Skip past the break for the untrimmed ad.
iPhone 4 antenna woes contextualized by dude in the know
It's the ultimate of ironies that Apple's externalized antenna array in the iPhone 4 -- hoped (and hyped up) to finally give us a phone every bit as good the rest of the device -- has become the cause of most rancor in the immediate aftermath of the handset's release. This morning you'll be rubbing both sleep and disbelief out of your eyes as you read that Apple's response to some people's reception problems with the 4 is to hold it differently. But, before we start ostracizing Apple as the singular offender here, let's hear from a man in the know. Spencer Webb runs AntennaSys, a company that designs tailormade RF solutions, and has himself worked on making quad-band transceivers for AT&T. As he tells it, almost all phone makers have now transitioned to locating their antennae at the bottom of the phones. This has been in order to move radio wave emissions away from the head (a shortcoming that a top-mounted aerial would incur), which the FCC has been quite demanding about with its SAR standards -- The iPhone 4, however, moved the antenna action from the back of the phone to the sides. This probably improves the isotropy of the radiation pattern, but only when the phone is suspended magically in air. Another great point made here is that testing done both by the Federales and mobile carriers might include the head, but never accounts for the presence of the person's hand. Thus, although a phone's antenna could test very well, it might suffer from such issues as those experienced with the iPhone 4. Mind you, this still seems like an assembly (rather than design) problem to us, since most of our editors haven't had any reception worries and we in fact saw improved performance on that front while conducting our review testing. Spencer himself has decided to buy the phone knowing full well about this potential limitation, and concludes on the note that "sometimes an antenna that's not great, but good enough, is good enough."
Spectrum's HD-mini indoor HDTV antenna
A Korean company called Spectrum has announced the impeding global launch of its small HD-mini indoor HDTV antenna that can be used with built-in, standalone, or PC-based digital tuners. The company, which won an award from the country's busy Ministry of Information and Communication for another innovative antenna design, employs so-called Planar Inverted F Antenna (PIFA) and broadband reception technologies to supposedly give it decent performance despite its size and location. Unfortunately, there's no word yet on when we'll see this model Stateside, nor how much it'll go for.
