Net income for the period was $15.4 million, or 14 cents per share, on revenue of $134.1 million. That compares with net income of $8.1 million, or 7 cents per share, in the same period in 2001.
Analysts expected Intersil to earn 13 cents per share, according to a survey by First Call.
Intersil expects its next quarter revenues will increase between 6 and 8 percent. It also forecast revenue from the sale of all its chips and other businesses will be between $580 million and $590 million this year.
The company intends to "attack new markets," like selling chips to the makers of credit card-sized modems that access both a Wi-Fi network and a cellular telephone network at the same time, said Intersil President Greg Williams.
Nokia is selling a similar laptop card in Europe.is using Intersil's chips to make a similar card for release in the United States later this year.
At the close of regular trading, Intersil shares were down 42 cents to $28.89. The earnings report was issued after the close of regular trading.
Williams attributed the better-than-expected report to nearly $50 million in sales of wireless access products during the quarter. The products, which are used to create Wi-Fi networks, are in about 30 million homes and offices throughout the world.
"We've seen strong growth since September," he said during a conference call with investors. "We're starting to see more equipment providers entering into the (wireless networking) business."