Thousand Oaks-based Xirrus has raised $18.4 million in venture capital, bringing its total funding to date to nearly $80 million.

Founded in 2004, Xirrus makes high-powered wi-fi equipment designed to be robust enough to replace wired networks in places like colleges and corporate office buildings. The most recent $18.4 million was part of a $25.3 million round disclosed in regulatory filings.

According to public filings, representatives from U.S. Venture Partners, August Capital and InterWest Partners have seats on the board. Also on the board is Carl Russo, the CEO of Petaluma-based Calix, a broadband infrastructure firm that bought Santa Barbara-based Occam Networks in 2011.

Xirrus has more than 175 employees. While the company does not release revenue figures, company officials told the Business Times in 2010 that sales were on track to hit $70 million.