- Buyers Guide
<Endwave Corp., a provider of high frequency RF devices and integrated subsystems, has announced the release of its EWV0800YF series of voltage-controlled oscillators (VCO) with dual outputs with total frequency coverage of 7.3 to 8.8 GHz and 3.65 to 4.4 GHz. Based on 2 μm 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 outstanding 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.
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