GaN PAs Influence Radar Design
By Richard Lang, Managing Director, Diamond Microwave
Over the last decade, gallium nitride (GaN) high-power transistor technology has evolved to such an extent that it is now feasible as an alternative to vacuum tubes for the high output power levels demanded by radar systems. Read More...

MMD March 2014

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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.

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.

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, August 28, 2015 - Featured Cover Products
  • Now available are multi-kW combiners at power levels to 20 kW CW and 100 kW peak. These low loss designs are ideal for coherent and non-coherent combining applications, tolerate high input unbalances, and operate into severe load mismatch conditions. - more...

  • A new line of wideband amplifiers features 5-bit digital attenuation. Attenuation range is 31 dB typical in 0.5 to 1.0 steps. Output voltage detector is also available. - more...


  • The AE1732B1400 cavity bandpass filter for wireless band 4 has a center frequency of 1732.5 MHz and a 45 MHz passband of 1710 to 1755 MHz. Insertion loss is 1 dB and rejection is as high as 70 dB between 2110 and 2155 MHz. - more...


  Feature Articles

IMD Measurement Enhancements to VNA Help Lower Test Costs in Amplifier Design, Production
By Anritsu Company

Meeting Modern Demand for High Production Throughput in All Aspects
By Joseph Haas, Product Manager of Cable Assemblies - BJG Electronics, Inc. and Kevin P McCormack, General Manager RF/Microwave Division - BJG Electronics, Inc.

Electronics Instrumentation Industry: New Trends Provide Second Chance
By Jessy Cavazos, Industry Director, Test & Measurement - Frost & Sullivan

Using a PXI Multiport Vector Network Analyzer for Fast, Accurate Multiport Network Analysis
By Takuya Hirato - Keysight Technologies

Noise Power Ratio Testing on a Budget
By Signal Hound

• Back to the Future
By Karen Hoppe, Editor, Microwave Product Digest


  Featured in August On The Market.
xxx Universal USB Power Sensors
The MA24208A/MA24218A Universal USB Power Sensors leverage the company’s patented triple path architecture to provide highly accurate, true RMS measurements of CW, multi-tone, and digitally modulated signals up to 18 GHz. Frequency coverage is 10 MHz to 18 GHz.
xxx RF LDMOS Wideband Integrated PAs
Now available with full design support capabilities is a new LDMOS integrated power amplifier from Freescale. The AFIC10275N is the industry’s first RF power integrated circuit covering the 978 to 1090 MHz band. It integrates two amplification stages in a plastic package, delivering 250W with 31 dB of gain and 64% drain efficiency.
xxx Network Test System Expanded
The latest version of the industry-standard TM500 WCDMA network test system has expanded capability to emulate four cells and hundreds of mobile terminals from a single benchtop unit. Combining six TM500 units into a rack-mount cabinet enables the network operator or infrastructure vendor to validate real data applications usage on a WCDMA network of 24 cells in a controlled lab environment.
xxx Cable Filters
These new cable filters can be designed as either lowpass, highpass, or bandpass constructions, covering frequency ranges up to 50 GHz. They are available in conformable (FCLPF Series) and semi-rigid cable styles (CLPF Series) that are built to customer specifications.
xxx X-Band Power Amplifier Module
Model BMC858109-600 is a Gallium Nitride (GaN) amplifier for applications in the X-band radar market. The AB linear design operates over the 8.5 to 10 GHz frequency range. Features include high output power dynamic range and peak output power of 600W (+58 dBm).
   Industry News
NRAO and Mini-Circuits Forge New Partnership to Enable Commercial Development of Cascadable Absorptive RF Filters
RFMW Announces Two Appointments
The Next Generation Space Interconnect Standard (NGSIS)
DHS and NASA Show Off Radar FINDER System
Microwave Radiation Tasty Solution for Killing Pesty Snails?
Navy Launches UAV “Swarms”
FCC May Open Up Radar Bands for Cellular on Shared Basis
France Military Says Wind Turbines Are Threat to Security
Samsung, Apple Lead Smartphone Sales in First Quarter
U.S. Navy Leads All Governments for Patent Filings for Sixth Straight Year
FCC Offers %1.65 to Wireless Carriers for Rural Broadband Deployment
Sprint Inks Deal with Boingo for Wi-Fi Offload at Airports
Author's Note Regarding "Nonlinear Circuit Analysis in Time and Frequency Domain -- Example: The Forced Van-der-Pol Oscillator," MPD, April 2015
   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.


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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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