2 to 20 GHz Broadband Amplifier MMIC Offers Positive Bias

The CMD187 is a wideband GaAs MMIC amplifier die for applications from 2 to 20 GHz. This device delivers greater than 22 dB of flat gain with a corresponding output 1 dB compression point of +14 dBm, and a noise figure of 4.5 dB at 20 GHz.

The CMD187 is an all-positive bias design, thus eliminating the complicated and costly sequencing circuits while also simplifying board layout. In addition, the use of on-chip tracking circuits ensures consistent performance over temperature and process variation. The CMD187 is a 50 Ohm matched design that offers full passivation for increased reliability and moisture protection.

The CMD187 is suitable for microwave radio and VSAT, telecom infrastructure, test instrumentation, and military and space applications.

6 to 11 GHz Low Noise Amplifier Offers 2.1 dB Noise Figure

The CMD186P3 presents an ultra-low noise figure of 2.1 dB, delivers greater than 18 dB of gain, and has a corresponding output 1 dB compression point of +16.5 dBm.

The CMD186P3, which is housed in a RoHS-compliant, 3x3 mm QFN plastic surface mount package, requires a single supply voltage of +5 V at 78 mA. Ideal of microwave radios and C- and X-band applications where small size and low power consumption are needed, the CMD186P3 is also suitable for point-to-point radios and phased-array radar applications. The 50 ohm matched design of the CMD186P3 amplifier does not require any external components aside from the usual bypass capacitors.

4 to 8 GHz Low Noise Amplifier Offers 1.9 dB Noise Figure

The CMD185P3 has a low noise figure of 1.9 dB and associated gain of +15 dB across a 4 to 8 GHz bandwidth, while only requiring a single positive supply voltage (+4.0 V @ 75 mA). With an output 1dB compression point at +15 dBm, the CMD185P3 is ideal for converter chains in communications systems where small size and low DC power consumption are required.

The CMD185P3 is housed in a Pb-free, RoHs compliant, 3 x 3 mm plastic surface-mount package and is 50 ohm matched on the input and output ports, thus eliminating the need for external DC blocks and matching components.

Custom MMIC Adds Four Products to Its Growing Line of Amplifiers

Custom MMIC has added four new amplifiers in die form to its product family: the CMD164, CMD165, and CMD173 distributed amplifiers, and the CMD166 driver amplifier.

The new products boast ultra-wideband performance, low noise figure, low current consumption, and an all positive bias scheme. Concerning the distributed amplifiers, the CMD164 (DC-30 GHz) and the CMD165 (2-30 GHz) each deliver greater than 12 dB of gain with an output 1 dB compression point of +15 dBm and noise figure of 2.4 dB at 10 GHz. The CMD173 operates from DC-20 GHz and delivers greater than 15 dB of gain with an output 1 dB compression point of +18 dBm and noise figure of 2 dB at 10 GHz. As a driver amplifier, the CMD166 operates from 20-40 GHz with 9 dB of gain and an output 1 dB compression point of +17 dBm.

The new amplifiers are 50 ohm matched designs, thus eliminating the need for external DC blocks and RF port matching. They offer full passivation for increased reliability and moisture protection and are perfect alternatives to higher cost hybrid amplifiers. Applications include microwave radio and VSAT, telecom infrastructure, test instrumentation, military and space applications, fiber optics, wideband communication systems, and point-to-point and point-to-multipoint radios.

From low noise to driver to power, amplifiers are found in nearly every microwave system. Custom MMIC not only offers a growing library of standard microwave amplifier products, they can also customize their designs to meet the needs of specific systems such as higher gain, lower noise figure, or simply two matched amplifiers in a package.

RF Fundamental Mixer MMIC Offers Low Conversion Loss

Operating between 11 and 21 GHz, the CMD178C3 offers 6 dB conversion loss, with very low LO leakage to both the RF and IF ports (-25 dBm and -30 dBm respectively). It can operate with an LO drive level as low as +9 dBm, and has a wide IF bandwidth from DC to 6 GHz.

The CMD178C3 can easily be configured as an image reject mixer or single sideband modulator with external hybrids and power splitters. It is housed in a durable, Pb-free, RoHs compliant, 3x3 mm SMT package.

Ideal applications for this mixer are point-to-point and point-to-multipoint radios, test equipment and sensors, and military radar and comms.