news review
Endwave’s Dual-Output VCOs range from to 3.65 to 8.8 GHz
Latest voltage-controlled oscillators (VCOs) range from 3.65 to 4.4GHz and 7.3 to 8.8GHz.
Endwave Corporation, a global provider of high-frequency RF devices and integrated subsystems, has announced the release of its EWV0800YF series of voltage-controlled oscillators (VCOs) with dual outputs with total frequency coverage of 7.3 to 8.8 GHz and 3.65 to 4.4 GHz.
Based on 2 micron InGaP/GaAs heterojunction-bipolar-transistor (HBT) technology, the monolithic-microwave- integrated-circuit (MMIC) oscillators feature on-board divide-by-two prescalers to create a second tuned output range at one-fourth the frequency of the fundamental outputs.
For example, model EWV0801YF tunes with a fundamental-frequency range from 7.3 to 8.3 GHz with typically +13 dBm output power and a divided frequency range of 3.65 to 4.15 GHz with typically +8 dBm output power. The VCO tunes with control voltages of 2 to 13 V and supply current of typically 260 mA.
It achieves phase noise of -116 dBc/Hz offset 100 kHz from the carrier in either band, with subharmonic levels of typically - 42 dBc and second-harmonic levels of typically -10 dBc. Pushing is typically 10 MHz/V for a tuning voltage of 5 V while pulling into a 2.0:1 VSWR load is typically 5 MHz peak to peak. The frequency drift with temperature is typically only 750 kHz/°C for a wide operating temperature range of -40 to +85°C.
The higher-frequency model EWV0802YF tunes across a fundamental-frequency range of 7.8 to 8.8 GHz with +13 dBm typical
output power and a divided-by-two output- frequency range of 3.90 to 4.4 GHz with +9 dBm typical output power. It matches the excellent phase-noise performance of the lower-frequency model, at -116 dBc/Hz offset 100 kHz from the carrier in either band, with subharmonics of typically -41 dBc and second harmonics of typically -10 dBc. It matches the performance of the EWV0801YF in terms of pushing, pulling, and frequency drift with temperature. Both oscillators are supplied in low-loss 32-lead QFN packages measuring just 5 x 5 mm.
Endwave also produces dual-output VCOs for higher-frequency operation through 15.5 GHz, including models in the EWV0900YF series for frequencies to 9.9 GHz, the EWV1000YF series for frequencies to 10.9 GHz, the EWV1100YF series for frequencies to 11.8 GHz, the EWV1200YF series for frequencies to 12.75 GHz, the EWV1300YF series for frequencies to 13.75 GHz, the EWV1400YF series for frequencies to 14.9 GHz, and the EWV1500YF series for outputs to 15.5 GHz. All include divided-by-two and divide-by-four secondary output ports, and all are housed in the company’s enhanced QFN surface-mount packages.
OSRAM: promoter of semiconductor research
The prize, established by Siemens to honour the father of the III-V semiconductors, Heinrich Welker, was first awarded in 1976. OSRAM has sponsored this award for several years.
“For OSRAM as one of the leading manufacturers of optoelectronic
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www.compoundsemiconductor.net July 2010
components encouraging research in this field is especially important. The Welker Award is given to people who have achieved exceptional progress in the field of opto-semiconductors”, said Berit Wessler, in charge of the strategic technology cooperation at OSRAM, as she presented the award to Professor Bhattacharya.
Sylarus to Supply Solar Cell Substrates with 5N Plus
5N Plus has provided financing to Sylarus Technologies ; the firms have entered into a germanium supply and recycling agreement.
5N Plus a manufacturer of high-purity metals and compounds for electronic applications has agreed to subscribe convertible debt of Sylarus Technologies, LLC of Saint George, Utah a major producer of germanium substrates for solar cells.
The financing is designed to help fund Sylarus’ expansion plans. Concurrently, 5N Plus and Sylarus have also entered into a long-term supply and recycling agreement under which 5N Plus will provide high-purity germanium feedstock to Sylarus and will recycle various germanium containing residues originating from Sylarus’ crystal growing and wafer manufacturing activities. 5N Plus President and CEO, Jacques L’Écuyer said, “We welcome the opportunity to provide financing to Sylarus and are excited about Sylarus’ potential for significant growth. Sylarus is one the very few germanium substrate suppliers used for high- efficiency solar cells in both space and terrestrial applications.”
This is an area of the solar market that we were not addressing through our existing product offering. Together with the supply and recycling agreement we entered into with Sylarus, this financing further strengthens our germanium related activities and provides a valuable outlet for our subsidiary Firebird’s line of products,” he added.
“We are equally delighted by this agreement” commented Sylarus President, Scott Mitchell, “as 5N Plus’ financing will enable us to more effectively implement our expansion plans. In addition, Sylarus will be provided with a reliable and high-quality germanium feedstock and cost effective recycling options. 5N Plus is a leading provider of material solutions to the solar industry and we expect a positive impact on our business from working with 5N Plus.”
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