DTO Handles 2 To 18 GHz
Model DTO-2G18G-CD-1 is a digitally controlled oscillator (DTO) for applications from 2 to 18 GHz. It achieves worst-case tuning accuracy of ±2 MHz at room temperature with minimum tuning step size of 0.5 MHz. The DTO delivers +10 dBm output power with ±3-dB flatness across frequency and temperature. It provides a minimum modulation bandwidth of DC to 9 MHz, with typical harmonic levels of -20 dBc and typical spurious signal levels of -55 dBc. The single-sideband (SSB) phase noise is -80 dBc/Hz offset 100 kHz from the carrier. The DTO,
which is designed to withstand stringent military ground or airborne environments, achieves ±0.1 MHz/°C frequency drift with temperature. It exhibits ±1 MHz maximum pulling into a 2.0:1 VSWR load with±500 kHz/V maximum pushing. The signal source handles operating temperatures of -40 to +70°C and runs on power supplies of +15, -15, +5, and +28 VDC. Planar Monolithics Industries, 7311-F Grove Rd., Frederick, MD 21704; (301) 662-5019, FAX: (301) 662-1731, e-mail: [email protected], www.pmi-rf.com.
Cable-Based Antennas Aid Airborne Wireless
A new line of cable-based antennas, also known as leaky feeder lines, has been developed to simplify the installation of airplane-based wireless communications systems. Ideal for both wide-body and single-aisle passenger aircraft, GORE® Cable-Based Antennas provide reliable access to different wireless protocols. They are easily installed along the length of the cabin
Switch Matrix Controls 18 GHz
For measurement and other critical signal-routing chores, the model USB-8SPDT-A18 Universal-Serial-Bus (USB) switch matrix provides a combination of high performance, versatility, and extremely long operating lifetime. Rated for 100 million switching cycles, the switch matrix consists of eight single-pole, double-throw (SPDT) electromechanical absorptive failsafe switches each with 85-dB typical isolation. Designed for applications from DC to 18 GHz, the unit can handle 10 W input power with low insertion loss per switch of typically 0.15 dB through 8 GHz and 0.30 dB through 18 GHz. It features low VSWR of typically 1.25:1 or less from DC to 18 GHz, with typical switching speed of 25 ms.
The eight switches can be configured as a single-pole, nine-throw (SP9T) switch, as a 2 x 8 switch, a single-pole, five-throw (SP5T) switch and a transfer switch, two transfer switches, and various other configurations. It is built into a rugged metal case measuring 4.5 x 12.0 x
Cable Assemblies Help Cut Losses
The SRX™ line of cable assemblies is engineered for low levels of passive intermodulation (PIM). The cables are suitable for RF/microwave applications at power levels to 150 W through 2.5 GHz depending upon the type of cable. They can be constructed with flexible-141, conformable-141, and semi-rigid RG-402 cables, with typical attenuation of 22 dB per 100 ft. Interconnect options include SMA, N, 7/16, and TNC connectors. Based on TCOM-240TM cable, these assemblies support power levels to 160 W at 2.5 GHz with attenuation of 13 dB per 100
Amplifier Drives 50 To 1500 MHz
Model TQP7M9106 is a driver amplifier developed by TriQuint Semiconductor and available now from RFMW Ltd. Suitable for general-purpose applications from 50 to 1500 MHz, the driver amplifier delivers +33-dBm (2-W) output power at 1-dB compression at 900 MHz while drawing 455 mA current from a +5-VDC supply. Supplied in a standard 4 x 4 mm QFN package, the driver amplifier achieves 20.8-dB gain at 0.9 GHz with an output third-order intercept point of +50 dBm. It includes on-chip electrostatic-discharge (ESD) protection for a robust Class 1C HBM ESD rating. It also boasts RF overdrive protection. Internal active bias allows the amplifier to run from a +5-VDC supply but also provides DC overvoltage protection. Stocking distributor
RFMW Ltd. also announced design and sales support for the model TQP7M9105 high-linearity amplifier from TriQuint, which is supplied in an SOT-89 housing. It provides better than 19 dB gain from 50 to 1500 MHz while drawing only 220 mA current from a +5-VDC supply. It achieves +49 dBm output third-order intercept point for high-linearity applications. RFMW Ltd., 90 Great Oaks Blvd., Ste. 107, San Jose, CA 95119; (408) 414-1450, FAX: (408) 414-1461, www.rfmw.com.
Low-Noise Device Serves UHF To 6 GHz
Renesas Electronics and California Eastern Laboratories (CEL) have announced the availability of a new silicon-germanium-on-carbon (SiGe:C) low-noise transistor suitable for applications through 6 GHz. Model NESG7030M04 is fabricated with Renesas’ SiGe:C semiconductor
GaN Power Amp Extends To 6 GHz
Model SSPA 0.020-6.000-35 is a high-power gallium-nitride (GaN) amplifier with 50-dB typical large-signal gain from 20 MHz to 6 GHz. Suitable for military as well as commercial applications, the amplifier boasts typical saturated output power of 35 W at room temperature, from a package measuring about 2.5 x 7.7 x 1.4 in. The typical noise figure is 10 dB at room temperature. The typical input/output VSWR is 2.0:1. The amplifier operates from a +28-VDC
Gunn Oscillator Tunes At F-Band
ModelSOM-10401317-08-S1 is a free-running F-band (90 to 140 GHz) Gunn oscillator with output power +17 dBm and mechanically tuning bandwidth of ±0.5 GHz. Mechanical tuning is
accomplished via a self-locking tuning screw or micrometer. The oscillator operates with typically 750 mA current at +4.5 VDC. An optional heater can be installed to further improve the temperature performance with a single bias at +10 VDC to supply heating power to 5 W. Other members of the mechanically tuned Gunn oscillator family provide coverage of Ka, Q, U, V, E, and W-band frequencies. SAGE Millimeter, Inc., 3043 Kashiwa St., Torrance, CA 90505; (424)-757-0168; FAX: (424)-757-0188, www.sagemillimeter.com.
LNA Front End Handles 12 To 15 GHz
Model AMFW-7S-12001500-95 is a waveguide-based, low-noise-amplifier (LNA), weather-proof Ku-band waveguide front end operating from 12 to 15 GHz. It includes a pressure-sealed WR75 waveguide input and SMA female output connector. The front end is sealed within a rugged aluminum alloy housing. It includes reverse voltage, over current, and over temperature protection in addition to full internal regulation.
The total weight is about 600 g with dimensions of 4.92 x 2.66 x 1.50 in. It has a typical noise temperature of 95 K and is capable of at least +10 dBm output power at 1-dB compression across the full frequency band, with an option for +20 dBm. It has input/output VSWR of 2.0:1. The typical small-signal gain is 55 dB with 3-dB peak-to-peak gain flatness and maximum gain ripple of 0.4 dB/40 MHz within the operating band. Gain variations with temperature are less than 0.08 dB/°C. The unit draws 150 mA current from a single +12 to +24 VDC supply. MITEQ, Inc. 100 Davids Dr., Hauppauge, NY 11788: (631) 436-7400, FAX: (631) 436-7430, www.miteq.com.
