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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Lansdale Celebrates Its 50th Year

Lansdale Semiconductor, Inc. is celebrating its 50th anniversary this year, after being founded in 1964 by Edward Pincus when he purchased the rights to manufacture Philco-Ford’s germanium transistor product lines. In 1976, its headquarters moved from Lansdale, PA to Phoenix, AZ after acquiring major product lines from Motorola.
Lillard joined the company four years later in 1980 as Operations Manager. He was previously with the Motorola Semiconductor Products Sector in Phoenix at their 52nd Street location. R. Dale Lillard, president of Lansdale Semiconductor, joined the company four years later as operations manager after previously working at Motorola Semiconductor Products Sector in Phoenix.

Six months after joining Lansdale, Lillard was promoted to the executive position of company president and in 1987 purchased Lansdale. Under his leadership Lansdale continued to grow by supporting legacy ICs originally designed and produced by a number of major OEMs. AMD, Fairchild, Freescale Semiconductor, Harris, Intel, National, Philips (formerly Signetics), and Raytheon have all signed contractual agreements with Lansdale to manufacture their ICs for the global electronics component marketplace. Lansdale manufactures more than 3,000 ICs from these OEMs and the company is sole-source producer of many hi-rel IC products. Lansdale is certified and approved by the Department of Defense Supply Center, Columbus (DSCC) and Qualified Manufacturer (QM) under the MIL-PRF-38535 Qualified Manufacturing List (QML), as well as ISO 9001/2008 qualified supplier.

Lansdale’s product life cycle management system is a quality control system that guarantees form, fit, and function equal to the original manufactures design specifications. This model has become increasingly important as the growth of the counterfeit industry has increased the problem of maintaining a reliable source of components for long-life systems. “With counterfeit electronic components becoming more of a global industry nightmare, Lansdale’s 50 years of product life cycle management, support and manufacturing using only the OEM’s original tooling has become even more critical in today’s market” said Lillard.

Lansdale created the business concept of the semiconductor aftermarket, manufacturing ICs as replacement parts that extend the life of the product they go into, just like auto parts aftermarket products. Lillard actually modeled Lansdale’s business after his grandfather’s aftermarket auto business in Albuquerque, NM, where he worked behind the counter part time during high school and college.




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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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