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Telecoms ♦ news digest


what it claims is the world’s highest power-added efficiency (PAE) rating, 67%.


This is an increase of more than seven points compared to conventional amplifiers. The amplifier is expected to lead to smaller and lighter transmitter devices to help microwave communication satellites save power.


The device has power-saving features to help make satellites more efficient and reliable.


The new amplifier’s record PAE of 67% is enabled by the world’s first harmonic tuning circuit placed in front of each GaN HEMT cell on the substrate. The PAE was improved by second harmonic impedance of GaN HEMT with highly accurate input control. The harmonic tuning circuit comprises a MIM capacitor and a spiral inductor.


The module has a high output power of 107W (50.3dBm) and is 17.4 x 24.0 x 4.3 mm weighing just 7.1g. It is an internally impedance- matched GaN HEMT amplifier.


As more satellites complete their operational lifespan, the demand is increasing for new microwave communication satellites with smaller, lighter and more efficient satellite transponders. Conventional transponder devices use travelling wave tube amplifiers (TWTAs) because solid- state power amplifiers with GaAs HEMTs, which lack sufficient output power and efficiency, require an additional amplifier to gain high output power. More efficient GaN HEMT amplifiers with high output power, high-field electron velocity and high- breakdown fields are expected to replace TWTAs in communication satellites.


Going forward, Mitsubishi Electric intends to further enhance the efficiency and power performance of GaN HEMT amplifiers for satellites and wireless communication systems.


Avago looking up with 50% net income increase


Over the last quarter, the firm has also increased its revenue by 9% to $560 million compared to the same quarter last year.


Net revenue was $560 million, an increase of 2 % compared with the previous quarter, and up 9 % from the same quarter last year.


On a GAAP basis, gross margin was $275 million, or 49.1 % of net revenue. This compares with gross margin of $233 million, or 45.2 % of net revenue in the same quarter last year.


Operating expenses were $137 million. This compares with $125 million in the same quarter the previous year.


Income from operations was $138 million, compared to $108 million in the same quarter last year.


Second quarter net income was $135 million, or $0.54 per diluted share. This compares with net income of $90 million, or $0.37 per diluted share in the same quarter last year.


The Company’s cash and cash equivalents balance at the end of the second quarter was $596 million, compared to $363 million at the end of the prior quarter. The increase over the previous quarter is primarily due to cash provided by operating activities of $251 million.


October 2011 www.compoundsemiconductor.net 87


Avago Technologies, a global supplier of analogue interface components for communications, industrial and consumer applications, has reported financial results for the second quarter of its fiscal year 2011, ended May 1, 2011.


The firm has also provided guidance for the third quarter of its fiscal year 2011.


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