- Buyers Guide
Military Microwaves Supplement
Programmable Harmonic Tuner
The model PHT programmable harmonic tuner performs independent selective tuning at harmonic frequencies at both source and load sides of transistors under load-pull measurement conditions. The unit operates over a frequency range of 800 MHz to 18 GHz with an instantaneous bandwidth of 200 MHz. The amplitude tuning range is 0.85 to 0.98 and the phase tuning range is 0° to 360°. Insertion loss is 0.1 to 0.5 dB. Maximum CW power is 50 W (GPC-7) and > 100 W (N). The electromechanical harmonic tuner is compatible with existing load-pull systems.
St-Laurent, Quebec, Canada
Multipath Fading Emulator Platform
The model MP2700 multipath fading emulator platform is designed to test third-generation mobile and base station equipment for IMT-2000 (FPLMTS) and W-CDMA, as well as digital television applications. The system simulates one or two wireless communication channels with propagation over as many as 24 simulated signal paths for more rigorous frequency-selective fading and delay tests. The channel propagation model is updated with 12-bit real-time processing using 65 MHz digital signal processing technology for precise and realistic emulation of multipath fading. Output power is adjustable from 0 to -120 dBm in 0.1 dB increments. A large active matrix display provides screen clarity and N-female connectors are standard. The platform includes a built-in computer, Windows-based graphical user interface for easy setup and operation, and IEEE-488.2 interface for remote programming.
Noise Com Inc.,
Self-calibrating Induced RF Simulator
The model NSG 2070 high frequency generator offers all the functions required for comprehensive testing of electrical and electronic goods for susceptibility to induced RF signals. Features include an automated self-calibration function that avoids the traditional requirement for lengthy manual procedures, and an innovative interrupt mode that allows engineers to pause the test at any point. The generator comprises a 100 kHz to 250 MHz high frequency synthesizer and 85 W power amplifier. A liquid crystal display and keypad on the front panel give access to all the instrument's calibration and test functions. The instrument can be controlled remotely from a PC using the company's Windows-based WIN-2070 software, which offers a range of additional test management and professional reporting functions.
Schaffner EMC Inc.,
Springfield, NJ (800)
367-5566 or (973) 379-7778.
Universal Test Fixture System
This universal test fixture/network analyzer system allows designers to measure substrates from 4 to 190 mm in length and up to 110 mm in width. The system, whose measurement platform holds up to 10 contact heads, ensures alignment repeatability of connections to circuits for maximum precision and evaluation integrity. The system allows electronic designers to test planar circuitry easily and match it precisely with the appropriate coaxial connectors. Adapters for all common coaxial interfaces are provided for analyzing microstrip and coplanar waveguides. Two models are available: one that tests up to five coaxial connectors simultaneously and one that tests a single connector only.
Rosenberger of North America LLC,
Arbitrary Waveform Generators
The AWG 500 series arbitrary waveform generators offer high performance and application-specific capabilities suitable for a growing number of electronic design applications, including the communications test market. The models AWG 510 and AWG 520 units feature a 1 Gsps clock rate, can output real-world analog or digital signals and automate the time-consuming guesswork implicit in creating the waveform stimulus that is crucial to product stress testing and characterization. The generators can simulate real-world signal degradation, such as noise jitter and fading. Using an integrated hardware noise generator, the units generate truly random white noise. In addition, engineers can simulate jitter with up to 2 ns of timing resolution. The units offer a wide variety of editing features. Engineers can choose from a graphical editor, several digital and analog filters and a powerful script editor. Prices: $21,995 and $28,995 for the models AWG 510 and AWG 520, respectively. Delivery: four weeks (ARO).
3 GHz Probe
The model 34A probe from the company's Picoprobe" series has been engineered to meet the stringent demands of advanced high frequency circuit designers. Specifications include an input capacitance of 0.1 pf, input resistance of 10 MW, frequency response of DC to 3 GHz, rise/fall times of 120 ps and signal attenuation of 20:1. Bandwidth is achieved by using only one probe point, which simplifies internal node testing without sacrificing performance. A variety of user replaceable probe tips and custom mounts for any micropositioners are available.
GGB Industries Inc.,
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