EXHIBIT 99.1 [ANADIGICS Logo Omitted] ANADIGICS ANNOUNCES PROPOSED SALE OF CONVERTIBLE SENIOR NOTES WARREN, NJ--September 20, 2004--ANADIGICS, Inc. (Nasdaq: ANAD) today announced that it intends to offer, subject to market and other conditions, a new issue of $30 million aggregate principal amount of convertible senior notes due October 2009. The notes will be issued in private placements and are expected to be resold by the initial purchaser to qualified institutional buyers under Rule 144A of the Securities Act of 1933, as amended. The notes will be convertible into shares of ANADIGICS, Inc. common stock at a premium to the market price on the date of the pricing of the notes. ANADIGICS, Inc. plans to grant the initial purchaser of the notes an option to acquire up to an additional $5 million aggregate principal amount of notes. ANADIGICS intends to use the net proceeds of this offering for general corporate purposes, including, among others, the reduction of outstanding indebtedness, working capital, capital expenditures and acquisitions. This press release is neither an offer to sell nor the solicitation of an offer to buy the notes or any other securities, and shall not constitute an offer, solicitation, or sale in any jurisdiction in which such an offer, solicitation or sale is unlawful. The notes and the shares of common stock issuable upon conversion of the notes have not been registered under the Securities Act of 1933, as amended, and may not be offered or sold absent registration or an applicable exemption from the registration requirements. Forward Looking Statements Except for historical information contained herein, this press release contains projections and other forward-looking statements (as that term is defined in the Securities Exchange Act of 1934, as amended). These projections and forward-looking statements reflect the Company's current views with respect to future events and financial performance and can generally be identified as such because the context of the statement will include words such as "believe," "anticipate," "expect," or words of similar import. Similarly, statements that describe our future plans, objectives, estimates or goals are forward-looking statements. No assurances can be given, however, that these events will occur or that these projections will be achieved and actual results and developments could differ materially from those projected as a result of certain factors. Important factors that could cause actual results and developments to be materially different from those expressed or implied by such projections and forward-looking statements include those factors detailed from time to time in our reports filed with the Securities and Exchange Commission, including the Company's annual report on Form 10-K for the year ended December 31, 2003, and those discussed elsewhere herein.