Sequoia Communications' new SEQ7400 RF transceiver design uses direct-conversion techniques combined with an innovative W-CDMA LNA and notch filter scheme to meet the requirements of W-CDMA, GSM and Edge modulation schemes.

At Mobile World Congress in Barcelona, Spain, Sequoia Communications displayed HEDGE transceiver’s capability to support HSUPA, TD-SCDMA, S-Band and GMR satellite specifications via extensive testing. Thus, making its HEDGE transceiver SEQ7400 the first true flexible radio, claims Sequoia. Originally introduced last May, the SEQ7400 is based on the company’s patented FullSpectra architecture, which includes the only transmitter in the industry to use polar modulation in all modes, according to the manufacturer. .

While NXP's Embedded Vector Processor (EVP) is a software-programmable platform for basebands, NXP's plan for multiple radios needed in future handsets remains a question.

Sequoia Communications, for example, already offers a multimode transceiver that has been verified to support HSUPA, TD-SCDMA, S-Band and GMR satellite specifications.