Peregrine Semiconductor's PLL Synthesizer for Applications to 5 GHz
Peregrine Semiconductor Corp. (Booth 2622) plans to educate visitors on the operation of its new PE97240 phase-locked-loop (PLL) synthesizer for applications from 800 MHz to 5 GHz (see “Low-Noise Phase-Locked Loop Extends to 5 GHz”). Housed in a compact 44-lead ceramic-quad-flat-pack (CQFP) package, the synthesizer includes a prescaler with selectable 5/6 or 10/11 dual-modulus operation. Visitors to the firm’s booth can learn more about this source and many others available from Peregrine, along with evaluation circuit boards that help to test the synthesizers.
Krytar's Coaxial Couplers for Applications to 50 GHz
Krytar (Booth 3218) will unveil a number of new coaxial couplers for 300-MHz to 50-GHz frequencies, including its model 120406 for use from 4.0 to 12.4 GHz. Ideal for space-restricted applications, the directional coupler supports measurements, monitoring, radar, and other applications. It exhibits nominal coupling of 6 dB with coupling flatness of ±0.5 dB and frequency sensitivity of ±0.3 dB. Typical directivity is better than 15 dB, while insertion loss is less than 1.8 dB. The coupler, which comes in a compact housing measuring 1.40 × 0.40 × 0.66 in., is supplied with 2.4-mm SMA connectors and handles 20-W average power and 3-kW peak power.
Cree Leverages GaN Technology for MMIC Amplifiers
Among the solid-state amplifier companies working in GaN technology, Cree (Booth 2636) will reveal a new 25-W 6- to 12-GHz MMIC amplifier that can be a potential replacement for TWTAs. Based on the firm’s GaN on silicon-carbide (SiC) semiconductor technology, the new amplifiers are available as a bare die (model CMPA601C025D) or in a thermally enhanced, 10-lead ceramic flange package (model CMPA601C025F). Both amplifier versions deliver 30% power-added efficiency (PAE) across the bandwidth. The die achieves 32-dB small-signal gain with 30-W typical saturated output power, while the flange-packaged amplifier offers 33-dB small-signal gain with 35-W typical saturated output power.
Empower RF Systems' Compact Power Amplifiers
Those looking for live demonstrations at IMS may want to check out Empower RF Systems’ (Booth 3226), which will have compact power amplifiers on display. One of the power amplifiers expected to be in action comes in a 5U chassis measuring just 17.5 × 8.75 × 22 in., yet delivers 1-kW output power from 1 to 3 GHz. The design includes an internal dual-directional coupler and instrument-grade power meter for keeping track of the power levels. The crew will also show booth visitors how to work their amplifier control software, with a host of different automatic-gain-control (AGC) functions as well as manual-gain-control functions.
MACOM to Showcase GaN-on-SiC Semiconductor Technology
MACOM (Booth 2839) will feature many high-power devices and amplifiers, including examples that incorporate its own GaN-on-SiC semiconductor technology. Visitors to the booth can learn more about the models MAGX-000912-650L00 and MAGX-000912-650L0S GaN-on-SiC power transistors in standard flange or earless flange packaging, respectively. Developed for pulsed L-band avionics systems, these depletion-mode power transistors provide 650-W output power from 960 to 1215 MHz. The internally matched devices achieve typical gain of 20 dB with 62% drain efficiency. The +50-V dc transistors are rated for a mean time to failure (MTTF) of more than 600 years, even when subjected to extremely mismatched conditions. These transistors will find homes in civilian and military pulsed avionics systems, including Mode-S, TCAS, JTIDS, DME, and TACAN systems.
Anritsu's ShockLine VNAs Suited for Users on a Budget
For those on tight budgets, Anritsu will demonstrate its ShockLine MS46121A series of one-port USB VNAs in a compact package. Powered and controlled via a user-supplied PC, the VNAs are available for measurements from 40 MHz to 4 GHz and 150 kHz to 6 GHz. Multiple VNAs can be run by a single computer connected to a USB hub. The analyzers perform sweeps in only 100 μs/point with directivity of 42 dB for highly accurate measurements. The company’s ShockLine software, with its straightforward graphical user interface (GUI), controls the instruments.