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Interference: The Creeping Menace
By Anatech Electronics |
Interference has been the bane of communication system designers since the earliest days of radio. At least back then, there were fewer sources to contend with but also far fewer remedies at their disposal.
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| MILITARY MICROWAVE DIGEST |
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 Band Reject Filter Series
Higher frequency band reject (notch) filters are designed to operate over the frequency range of .01 to 28 GHz. These filters are characterized by having the reverse properties of band pass filters and are offered in multiple topologies. Available in compact sizes.
RLC Electronics
 SP6T RF Switch
JSW6-33DR+ is a medium power reflective SP6T RF switch, with reflective short on output ports in the off condition. Made using Silicon-on-Insulator process, it has very high IP3, a built-in CMOS driver and negative voltage generator.
Mini-Circuits
 Group Delay Equalized Bandpass Filter
Part number 2903 is a group delayed equalized elliptic type bandpass filter that has a typical 1 dB bandwidth of 94 MHz and a typical 60 dB bandwidth of 171 MHz. Insertion loss is <2 dB and group delay variation from 110 to 170 MHz is <3nsec.
KR Electronics
 Absorptive Low Pass Filter
Model AF9350 is a UHF, low pass filter that covers the 10 to 500 MHz band and has an average power rating of 400W CW. It incurs a rejection of 45 dB minimum at the 750 to 3000 MHz band, and power rating of 25W CW from 501 to 5000 MHz.
Werlatone
 LTE Band 14 Ceramic Duplexer
This high performance LTE ceramic duplexer was designed and built for use in public safety communication and commercial cellular applications. It operates in Band 14 and offers low insertion loss and high isolation to enable clear communications in the LTE network.
Networks International
See all products in this issue
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 Friday, July 25, 2014 - Featured Cover Products |
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By Hittite Microwave
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By Luso Electronics
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By Skyworks Solutions, Inc.
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By Karen Hoppe, Editor, Microwave Product Digest
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| Featured in July's On The Market. |
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Solid State Hybrid Power Amplifier
Model 50HM1G6AB-47 is a compact, wideband, 50W Class AB solid state hybrid power amplifier module that instantaneously covers 1 to 6 GHz. It operates from a single DC voltage, and provides 48 dB of typical gain with excellent gain flatness, noise figure and low intermodulation distortion for military and wireless applications.
AR RF/MICROWAVE INSTRUMENTATION |
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High Isolation SP4T Switch
Now available with full design support capabilities is the broadband, highly linear PE42442 from Peregrine Semiconductor, which operates from 450 MHz to 4 GHz and features 61 dB isolation (at 900 MHz), +58 dBm IIP3, and +34 dBm power handling.
ARROW RF & POWER |
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Coaxial/Compact Ultra-Wideband Linear Amp
Model AMF-5F-04001200-12-10P is a new addition to the company’s family of low noise, wideband and ultra-small coaxial LNAs in the 4 to 12 GHz band. It has over 39 dB of gain in a housing that is only 0.89” long and 0.64 wide without the field replaceable SMA connectors. Gain flatness is a maximum of +/-1.5 dB.
MITEQ |
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Pressurized Connectors
The pSeries pressurized connectors provide low-loss, high-stability performance through 30 GHz at +/-65 psi. These pressurized connectors, which meet the IP68 standard, feature a simplified, three-piece design—body, center contact, and an innovative dielectric—which eliminates troublesome internal O-rings, gaskets and silicone greases.
SAN-TRON |
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Low PIM Adapters & Jumpers
New low PIM (-160 to -165 dBc, typ.) adapters and jumpers for DAS applications feature industry-leading PIM performance of -155 dBc minimum. They are available in 7/16 DIN, Type N to SMA and 4.1/9.5 Mini-DIN connectors. Ideal for a variety of applications.
MECA ELECTRONICS |
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•The Design of Ultra Narrowband Amplifiers Using Small-Signal Varactor Upconverters
This paper presents a method of realizing tunable microwave amplifiers with ultra narrow bandwidths that can be less than 0.5% by the use of a varactor up-converter (UC).
Planar Monolithics
•Directivity and VSWR Measurements
Return loss and VSWR measurements are complicated by the finite performance of the directional device used to measure the reflected power. The only accurate and convenient way to make return loss measurements is with a well matched high directivity directional coupler or bridge.
Marki Microwave
•Switch Solutions for Systems with Low PIM Requirements
Dow-Key Microwave has invested in R&D for new RF switch products designed specifically to reduce intermodulation (IM) in coaxial switches.
Dow-Key Microwave
• How to Specify RF and Microwave Filters
Covers cavity, ceramic, LC, crystal and helical filters.
Anatech Electronics
• Mounting Considerations for Medium Power Surface-Mount RF Devices
Covers all factors that must be considered when mounting SMT devices.
TriQuint Semiconductor
• Biasing MMIC Amplifiers
How to bias MMICs along with theory and techniques.
Mini-Circuits |
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SEARCH MPD’S EXTENSIVE DATABASE! |
 In Defense of DARPA; Lamenting Bell Labs
By Barry Manz
A federal agency like DARPA is a sitting duck for politicians and assorted other critics. It has come up with some truly bizarre programs over years that ultimately either delivered no tangible results, were canceled before they could cause any damage, or attempted to answer questions that nobody was asking or needed answers to. Read More...
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