The Opportunities and Challenges of LTE Unlicensed in 5 GHz
David Witkowski, Executive Director, Wireless Communications Initiative
In 1998, the Federal Communications Commission established the Unlicensed National Information Infrastructure or U-NII 5 GHz bands. These are used primarily for Wi-Fi networks in homes, offices, hotels, airports, and other public spaces and also consumer devices. U-NII is also used by wireless Internet Service Providers, linking public safety radio sites, and for monitoring and critical infrastructure such as gas/oil pipelines.

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

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December 2012

Howard Hausman
President/CEO MITEQ, Inc.

Q: The importance of sustaining and developing technology has reached a point where states and cities are more actively building relationships with universities and recruiting high-tech companies. However, there continues to be a shortage of engineering graduates, especially those focusing on RF and microwave technology. What would your company do (or is doing) to help promote careers?

A: MITEQ is a Microwave engineering company and recognizes the need to promote this discipline in our schools. We regularly hire engineering students as interns and let them interface with our senior engineers. Many of our interns turned into full-time employees after their graduation. We have also established cooperative efforts with engineering professors in fields of mutual interest.

I agree and support local governments creating industrial and university relationships but this only works if there are engineers to do the development. The need for more engineers, especially microwave engineers is evident and should be a priority. I feel that this need can be satisfied if the government would offer loans to engineering students that would be forgiven if the student works in the engineering industry or engineering academia for at least five years after they graduate.

Q: For those of you serving the military market, what do you expect 2013 will bring in terms of opportunities in this sector?

A: Military budgets have been severely curtailed and may even be hit harder if sequestration takes effect. MITEQ feels that opportunities exist in supporting and enhancing current programs that enhance operational effectiveness. In the microwave components world MITEQ continues to develop higher technology, and more complex Integrated Microwave Assemblies that increase a systems reliability, serviceability, and performance while decreasing operational costs.

Military missions vary and on board hardware that supports mission success keeps changing but the communication links are universal to the aircraft, ship, or ground forces. Remote visibility and control demands more real time high resolution video. Satellite links are an important segment of this communication network and MITEQ is a major player and technology leader in this area.

Q: If your company serves the commercial markets, are you encouraged by any particular emerging application or technology?

A: Emerging applications vary but the common thread is the need for interconnectivity. To support the various applications people want to be connected everywhere, every time, instantly (i.e. without waiting, with higher and higher data rates). Satellite communications either directly or indirectly is used to fill this need and MITEQ is a major player in this discipline. As current segments of the spectrum are being filled up and new segments of the spectrum are being built out new, more exotic equipment is needed. MITEQ is a microwave engineering company with expertise in developing the needed higher technology equipment. This is a significant business area for MITEQ currently and in the next few years.

Q: Last year, we asked what impact the global economic crisis was having on the markets you serve and on how you run your business. What is your current perspective?

A: The economic outlook is uncertain at best and MITEQ is cautious about over extending itself. The defense budgets are not expected to rise and commercial projects are being delayed, that’s the down side. The up side is that MITEQ stays out of the crowd and focuses on technologies that are in demand even in a downside economy.

Funding of new military programs is uncertain but current programs still must be supported and enhanced to maintain their effectiveness. Microwave engineering companies such as MITEQ are an important resource that fulfills this need supporting military programs in the areas of RADAR, Electronic warfare, Reconnaissance, and Surveillance equipment. Also communications infrastructure is growing because demand for connectivity is strong. Satellite communications is a small but critical part of that growth and MITEQ is supporting our customers with more advanced equipment to maximize the efficiency of planned communications links.

Q: What countries or regions do you believe will provide the greatest growth potential for the wireless industry in 2013?

A: Greatest growth markets are not the highest revenue markets. The less developed countries provide the greatest percentage growth for the microwave electronics and communications industries, but they are still far behind the dollar amount spent by the US, Europe, and the Pacific Rim. This will change in the future as these countries become more developed and demand ubiquitous communications common to the more developed world. MITEQ supports communication development on seven continents (even Antarctica the least developed part of the world) and intends to help developed, near developed and undeveloped regions attain quality communication equipment. ♦


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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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