Hittite Microwave Corporation, the world class supplier of complete MMIC based solutions for communication & military markets, has introduced three new Wideband Voltage Controlled Oscillator (VCO) Modules which are ideal for Test and Measurement, Military, Microwave Radio, Space, Industrial, and Laboratory applications from 4 to 12.5 GHz. The HMC-C028, HMC-C029 and HMC-C030 Wideband VCO Modules offer output frequency coverage from 4 to 8 GHz, 5 to 10 GHz, and 8 to 12.5 GHz respectively, and feature an integrated buffer amplifier for increased output power and extremely low frequency pulling characteristics. These robust VCO modules exhibit SSB phase noise performance as low as -95 dBc/Hz at 100 kHz offset, and output power as high as +21 dBm. The HMC-C028, HMC-C029 and HMC-C030 utilize InGaP GaAs HBT technology, and incorporate the resonator, negative resistance device, and varactor diode in an integrated oscillator structure. Internal voltage regulation enables these fully integrated VCO modules to operate from a single supply between +8V and +15V, while consuming less than 200 mA of current. The single-ended RF outputs are matched to 50 Ohms, while the Vtune ports accept analog tuning voltages from 0 to +13V, and can accommodate very fast tuning bandwidths. The HMC-C028, HMC-C029 and HMC-C030 share a common footprint, and are housed in hermetically sealed RoHS compliant modules which also meet stringent military and space solder material requirements. All connectorized module products are available from stock and can be ordered via the company’s e-commerce site or via direct purchase order. Released data sheets are available on-line at www.hittite.com.