IN MY OPINION
Attenuators on VNA Cables when Testing Passive Devices
By Ernest Werbel, Chief Engineer, Werbel Microwave LLC
Some difficulty in acquiring reliable measurements triggered a point of interest from previous experiences. Why did some technicians place precision attenuators on one or both VNA cables as part of a setup for measuring passive devices? “It’s always been there.” But like all things, there must be a reason.
Read More...
MILITARY MICROWAVE DIGEST


MMD March 2014
New Military Microwave Digest

ON THE MARKET


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


  Friday, March 27, 2015 - Featured Cover Products
 
  Feature Articles

Ultra-Small, High-Performance, Micro-Coaxial Cable Assemblies Enable the Latest Medical Procedures
By High Speed Interconnects

A Simple Approach to Signal Via Stubs for Coaxial PCB Connector Launches
By Molex

Second-Generation RF Recording and Playback System Adds New Capabilities
By X-COM Systems

Werlatone Gives Back to SUNY Canton
By Werlatone

Power Supply Frequency Response Measurements Using an Oscilloscope
By Keysight Technologies, Inc.

Making the Switch from Fiber Optics in Favor of Faster, High-Capacity Wireless
By Renaissance

• A Look Back at Mobile World Congress (MWC)
By Karen Hoppe, Editor, Microwave Product Digest

Advertisement
  Featured in March On The Market.
xxx Data Length Extension Option
A new option is now available for the MT8852B Bluetooth® test set that supports the Data Length Extension associated with Bluetooth Low Energy (BLE) as part of the latest Bluetooth Core Specification version 4.2. - more
Anritsu Company
xxx X-Band SSPA Module
Model BMC858109-600 is a GaN solid state power amplifier module for applications in the X-Band radar market. The AB linear design operates over the 8.5 to 10 GHz frequency range intended for use in radar applications. Features include RF input & output sample detectors.
Comtech PST
xxx Industry Leading High Power SP3T and SP4T 200W PIN Diode Switches
Two high power PIN diode switches have been introduced that boast industry leading linearity in a common anode configuration, operating over the 50 MHz to 1 GHz frequency range. - more
MACOM
xxx Eight-Way Power Divider
Model PS8-53-454-4S is an 8-way power divider that covers a frequency range of 10 to 40 GHz with 2.5 dB of insertion loss and 12 dB isolation. Amplitude balance is +/-0.8 dB and phase balance is +/-12º. VSWR is 1.9:1 and power handling is 10W.
Pulsar Microwave
xxx MPC Interconnect System
The MediSpec™ Medical Plastic Circular (MPC) Interconnect System is an economical custom-off-the-shelf interconnect that delivers high-mating cycles and low-mating forces at a fraction of the cost of competing machined-contact systems.
Molex Incorporated
   Industry News
Guerrilla RF Awarded Technology Patent for High Isolation Amplifier Circuit Architecture
Frost & Sullivan to Host Virtual Panel on 5G on February 18
L-3 Acquires Miteq
Ted Heil Named President of Mini-Circuits
Curtiss-Wright Announces its "Bicycle Shop" Technology Incubator
Lorie Slay Appointed Fairview Microwave Sales and Service Manager
IMS Appoints Stephen Gouin as Global Sales Manager
API Technologies Launches RF and Microwave Online Design Tool
RFMW Announces Director of Coaxial Components
Dr. Ian Gresham named IEEE Fellow
Mouser Electronics Announces Expanded Partnership with Hittite Microwave
CST University Publication Award 2014: Winners Announced
MACOM Successfully Completes Acquisition of BinOptics Corporation
Samsung Selects Anritsu for Automated Smartphone Testing
Over 15,000 Microsemi Space Products Deployed on 10-year-long Rosetta Spacecraft Mission
Chenakin Appointed R&D Director of Anritsu Microwave Measurement Division
NJIT Gets Grant to Boost NJ Defense Work
Deloitte Ranks API Technologies 83 in Fast 500
Northrop Grumman Gets $121 million for Advanced Technology Microwave Sounder
WIGO Deploys DragonWave High-Speed Microwave Links
SpeceX Reportedly Developing Micro-Satellite for Internet Access
Tektronix Announces First Wireless Lab Management Solution for Education
   White Papers

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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FROM WHERE WE SIT

Uncertain Times for DefenseWill OpenRFM Shake Up the Microwave Industry?
By Barry Manz

Throughout the history of the RF and microwave industry there has never been a form factor standardizing the electromechanical, software, control plane, and thermal interfaces used by integrated microwave assemblies (IMAs) employed in defense systems. Rather, every system has been built to meet the requirements of a specific system, which may be but probably isn’t compatible with any other system. It’s simply the way the industry has always responded to requests from subcontractors that in turn must meet the physical, electrical, and RF requirements of prime contractors. Read More...


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