Quellan, a Santa Clara, Calif. company that reduces noise interference on weak wireless signals, said it has raised $20 million in a third round of financing.

[Update: The company, which originally said it would be profitable this year, now says it won’t be profitable until the end of next year.]

The company has been around since 2001, but its strategy to boost cell reception is relatively recent. Its technology comes at a good time: Motorola’s RAZR phone has 13 radios in it, for example, underscoring how phones are getting ever more sophisticated. These various radios are creating distortion, but Quellan deals with that

New investors include W.L. Gore & Associates, Harbinger Venture Management (backed by MiTAC, a world leader in GPS Personal Navigation Platforms), JAFCO (a Tokyo based global venture capital firm) and Glynn Capital Management. These new investors join Menlo Ventures, Yamacraw Capital Seed Fund, Cordova Ventures, Samsung Ventures America, and VentureTech Alliance, which have invested more than $23 million previously.