Editor's note: As part of a new partnership with PBS's Nightly Business Report, TheStreet's James Rogers spoke with NBR's Tom Hudson about under-the-radar tech stocks that tap Apple's success. (Watch video)

CUPERTINO, Calif. ( TheStreet) -- Unless you have been living in a cave for the last few months, you know about Apple's ( AAPL) iPad and the new iPhone 4, antenna problems and all.

But what about the components lurking within these devices? Apple and its partners are locked in an omerta-style code of silence, although numerous product teardowns have peeled back the real technology story lurking inside the iPad and iPhone 4.
Word on the Street

Cue Skyworks Solutions ( SWKS), Cirrus Logic ( CRUS) and OmniVision ( OVTI). They're hardly household names, but they're key Apple partners -- and perhaps key investments.

With Apple's stock currently trading at about $260, these companies offer investors a cheaper entry point into Apple's future, particularly if their products appear on a 4G Verizon ( VZ) iPhone or a new iPad, products that are rumored to debut in 2011.

Perhaps the biggest boost for these companies comes from Apple's seal of approval, which inevitably raises their profile in the fiercely competitive world of tech componentry. Here, TheStreet explains why you should keep an eye on Skyworks, OmniVision and Cirrus Logic.

Skyworks Solutions

Last closing price: $19.13

Wireless chipmaker Skyworks will not discuss Apple, but a teardown of Apple's latest iPhone (performed by ifixit.com) reveals three Skyworks chips inside the iPhone 4. Analysts estimate that Skyworks has about $4 of gear within the new phone, up from $2 in the earlier version of the iPhone.

One of Skyworks' Power Amplifiers (PAs) partly powers the iPhone 3 and 3GS; the iPhone 4 features three PAs. Other teardowns have also revealed a Skyworks PA lurking within Apple's iPad.

Apple's increasing reliance on Skyworks can only bode well for the chip specialist's future, particularly if a new iPhone and iPad appear next year.

Unsurprisingly, Skyworks blew past analysts' estimates in its recent third-quarter results, bringing in revenue of $275.4 million, a 44% hike on the prior year's quarter. The Woburn, Mass.-based company also gave bullish fourth-quarter guidance and talked about its work with other big-name tech firms. Skyworks said it has started shipping amplifiers for a Cisco ( CSCO) multi-room DVR that will support Verizon's ( VZ) FiOS service.

Cirrus Logic

Last closing price: $20.54

With its audio chips inside the iPad and the iPhone 4, Cirrus Logic's stock has been on a tear.

Like other Apple partners, Cirrus makes no reference to Apple, and the only evidence of the companies' relationship comes from teardowns. But Cirrus Logic's CEO, Jason Rhode, recently discussed his company's success in supporting its "largest" audio customer, explaining that the opportunity didn't happen overnight by accident.

"Our strategy has been to target growing markets such as portable media players and smartphones and develop great relationships with tier-one customers in those markets," Rhode said during Cirrus Logic's recent first-quarter conference call.

This approach is certainly working. Cirrus Logic grew its first-quarter revenue by 118%.

Arguably the best-known name on this list, Cirrus Logic has seen its stock rise almost 200% this year. There could be even more upside ahead if the company maintains its presence inside next-generation iPads and iPhones.

Analysts have also talked about the upside regarding the company's non-Apple products, like its chips for smart energy meters.

OmniVision Technologies

Last closing price: $25.50

OmniVision is linked to Apple via its mobile camera technology. A recent iSuppli rip-apart of the iPhone 4 confirmed OmniVision's presence inside it.

Cited as an attractive stock on the strength of its image sensor technology, OmniVision's shares are enjoying healthy growth and the company's stock has climbed almost 72% this year.

Whether OmniVision makes it into the 2011 iPhone, however, remains to be seen. There's been talk that Apple could choose an 8-megapixel camera from Sony ( SNE).

OmniVision has nonetheless received Apple's all-important seal of approval with the iPhone 4, which is likely to grab the attention of other handset manufacturers. "Apple has endorsed their technology," said Doug Freedman, an analyst at Gleacher & Company. " So others are likely to adopt it."

Apple itself may even consider OmniVision in other parts of its empire, according to Freedman. "You're also likely to see Apple use these products in new devices," he said. "There's no camera in the iPad -- I wouldn't be surprised to see this technology in a new iPad."

An OmniVision spokesman told TheStreet that the firm is not at liberty to disclose any details about which products "may or may not use" its image sensors. Investors, however, should keep their eye on this company thanks to its technology, which continues to win rave reviews.

-- Reported by James Rogers in New York

Follow James Rogers on Twitter.

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