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Gain Horn Antennas

The 600 Series standard gain horn antennas from Narda, an L-3 Communications company (Hauppauge, NY), are suitable for EMI and EMC testing applications covering waveguide bands from 2.6 to 40 GHz. Seven models cover 2.6 to 3.95 GHz, 3.95 to 5.86 GHz, 5.4 to 8.2 GHz, 8.2 to 12.4 GHz, 14 to 18 GHz, 18 to 26.5 GHz, and 26.5 to 40 GHz. Directivity patterns for all models include a beamwidth in the E and H planes from 23° at 40 GHz to 34° at 2.6 GHz. Weight ranges from 6 pounds for the 2.6 to 3.95 GHz model to 4.5 grams for the 18 to 40 GHz model. They are supported by waveguide-to-coax adapters from either Type-N female or SMA/3.5/2.9-mm female connectors.

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Microwave Power Sensors

Anritsu (Morgan Hill, CA) offers MA24108A/ MA24118A microwave USB power sensors that provide average power measurements from 10 MHz to 18 GHz over 60 dB of dynamic range. Employing a dual-path architecture, they can measure CW, multi-tone, and digitally modulated signals used in aero space/defense systems. They have built-in external trigger circuitry and an MCX connector interface to receive triggers from external stimuli. They also include a microcontroller, signal conditioning circuitry, ADC, and power supply.

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Compact Antennas

Antenna Factor (Merlin, OR) offers the HW Series 1⁄2-wave center-fed dipole antennas and 1⁄4-wave monopole antennas that attach using an FCC-compliant RP-SMA connector or standard SMA connector. The 1⁄2-wave dipoles are available in standard center frequencies of 868 and 916 MHz, while the 1⁄4-wave monopoles are available in 315, 418, and 433 MHz.

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Microwave Signal Generators

The 2500B series of microwave signal generators from Giga-tronics (San Ramon, CA) covers 100 kHz to 50 GHz with low phase noise, high rejection of harmonics, sub-harmonics, and spurious, high output power level. Six models cover 2.5, 8, 20, 26.5, 40, and 50 GHz. Accumulator High Frequency Feedback (AHFF™) technology delivers a switching speed of typically less than 500 μs for a 1 GHz step and as fast as 100 μs for small steps. Close to carrier phase noise is -90 dBc/Hz at 100 Hz. Generator noise performance is 10 kHz offset with a typical performance of -110 dBc/Hz. This series is suitable for radar and EW applications.

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Antenna Design Simulation

Magus (Stellenbosch, South Africa), in conjunction with FEKO (Hampton, VA), offers Antenna Magus, a design simulation software solution for antenna design and placement analysis. It offers a searchable collection of antennas, which can be explored to find, synthesize, and export antenna models. It can export synthesized antennas as FEKO models, which may then be refined, customized, analyzed, and optimized in FEKO. The software can also analyze electrically large structures, such as the MLFMM and hybrid asymptotic methods (MoM-PO, MoMGO, and MoM-UTD).

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Compact Antennas

ETS-Lindgren (Cedar Park, TX) offers two compact-sized, open-boundary, quad-ridge horn antennas. The 3164-06 (300 MHz – 6 GHz) covers the main wireless bands and the entire UHF band common in tapered chambers, while the 3164-07 (700 MHz – 6 GHz) also covers the main wireless band and is suitable for use in rectangular chambers. They are equipped with dual ports so that simultaneous measurements can be made in two orthogonal polarizations of the field. They also include flanges for wall mounting and brackets for tripod mounting. The rear assembly is milled from a solid block of material.

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Power Transistor

RF Micro Devices (Greensboro, NC) offers the RF3931, a 48-volt, 30-watt gallium nitride (GaN) power transistor in a hermetic, flanged, ceramic package. It enables the development of high-efficiency HPAs for a range of applications, including cellular and WiMAX infrastructure, CATV, military communications, public mobile radio, radar, and radar jammers.

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Multilayer Capacitor Chips

The UQ Series multilayer capacitor (MLC) chips from AVX Corp. (Myrtle Beach, SC) are suitable for RF/microwave applications ranging from 10 MHz to 4.2 GHz. With precious metal electrodes and a fine-grained, high-density, high-purity dielectric material to keep out moisture, the chip offers low ESR, high series resonance, and lower equivalent series resistance than previous versions. Applications include RF/IF amplifiers, mixers, oscillators, low-noise amplifiers, filter networks, and medical devices such as MRI coils.

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Signal Analyzer

Agilent Technologies (Santa Clara, CA) has introduced the N9030A PXA signal analyzer, which provides frequency coverage up to 26.5 GHz and features up to 75 dB spurious-free dynamic range at 140-MHz analysis bandwidth. It also features -128 dBc/Hz phase noise at 10 kHz offset (1 GHz), 0.19 dB absolute amplitude accuracy, and sensitivity of -172 dBm displayed average noise level at 2 GHz, (with preamplifier and Noise Floor Extension technology). One-button measurements and advanced measurement applications are also available. It features code compatibility; emulation of remote programming language; default settings, timings, and couplings; arbitrary and second IF output; fast-risetime logarithmic video output; and Y-axis output. MATLAB® software is available as an option.

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Chip Attenuator

International Manufacturing Services (Portsmouth, RI) offers the VGX-3725WA high-power 0.375 x 0.250" aluminum nitride chip attenuator that includes wraparound terminals for solder or epoxy attachment. It dissipates 100W at a 100 °C baseplate temperature. Standard impedance is 50 ohm and attenuation values to 30 dB are available, including 0.5-dB increments. Achievable VSWR is 1.3:1 to 6 GHz depending on implementation, and attenuation accuracy starts at ±0.2 dB. They are suitable for RF and microwave applications.

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