LONDON Nujira Ltd. (Cambridge, England) has said it intends to demonstrate the world's most efficient RF power amplifier for 3G/4G at Mobile World Congress which takes place in Barcelona, Feb. 15 to 18. The demonstration is based on Nujira's Coolteq.L silicon.
Nujira's products are based on modulator tracking technology that dynamically controls the power supply to the circuit in line with the transmission performance required. The approach is applicable to 3G and 4G cellular base stations, handsets and TV broadcast transmitters.
So far Nujira has focused on basestation implementations but the company is beginning sampling of Coolteq.L test silicon to top global handset OEMs, PA manufacturers and chipset platform vendors as a development platform and proof of concept.
Nujira asserts that Coolteq.L can double the efficiency of the handset PA, and halve the peak current requirement which is a major constraint for 4G handsets and USB dongles. One handset OEM has already signed a purchase agreement for the Coolteq.L development platform, and the company is in talks with other major OEMs and baseband and PA chip manufacturers.
"Coolteq.L reduces bill-of-material cost and increases battery life for 3G, HSPA, 4G LTE and WiMAX terminals, directly addressing the two biggest challenges that developers face," said Tim Haynes, CEO of Nujira, in a statement. "Our test silicon implementation allows ecosystem partners to evaluate the technology and to independently validate our efficiency claims before integrating it into their own devices."
Coolteq.L is a self-linearizing wideband power optimization technology which allows handset markets to use a single PA over three to five times the bandwith of a standard design, Nujira claimed.
As a result, Coolteq.L can be used as a basis for a front end covering twenty-three different frequency bands defined by 3GPP for LTE and all of the operating modes (GSM, EDGE, WCDMA, HSUPA and LTE) at the full 20-MHz signal bandwidth, using only two PAs. Without Nujira's solution seven or more PAs would normally be required.
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