Interconnect Advances Fuel Technology Growth
By Orwill Hawkins, Vice President of Marketing, LadyBug Technologies

With increased frequencies, higher data rates, and lower noise levels, the microwave industry serves as a leader in technological capability. Demand for quality interconnects has increased right along with other higher-performance areas in the industry.


MMD March 2014
New Military Microwave Digest


E-Band Active X5 Multiplier
Model SFA-743843516-12SF-N1 is an E-band X5 active multiplier with center frequency at 79 GHz with minimum +/-5 GHz operational bandwidth. It converts 14.8 to 16.8 GHz/+5 dBm input signal to deliver 74 to 84 GHz frequency band with more than +16 dBm power.
Sage Millimeter

Hand-Flex™ Coaxial Cable
Covering DC to 12.5 GHz, this 8” coaxial cable, 141-8SMNB+, has a bulkhead Female Type-N connector at one end and SMA-Male at the other. Features include low loss, excellent return loss, hand formable, and an 8mm bend radius for tight installations.

Phase Trimmer Series
This new phase trimmer series is designed for RF applications where phase match between two cables is needed for proper system performance. Phase trimmers, offered from DC to 50 GHz, will give an accurate phase adjustment over a specified frequency range.
RLC Electronics

Planar Monolithics Industries
Model PTRAN-100M18G-SFB-3UVPX-MAH is a transceiver covering the frequency range of 100 MHz to 18 GHz. The transceiver fits into a 3U Open VPX form factor utilizing the high speed VITA 67 RF connector.
Planar Monolithics Industries

SMT High-Power Attenuators
Now available with full design support capabilities are three new SMT high-power attenuators from Anaren. These 30 to 50W devices are high-performance, high-power chip attenuators covering DC to 3.0 GHz and feature high return loss and small footprints.
Richardson RFPD

See all products in this issue


December 2013

For Wireless Carrier RF Distribution, Digital is the Real Deal
By Peter Walters, Chief Operating Officer, Dali Wireless

Liam Devlin, CEO, Plextek RF Integration

When the cellular industry began its meteoric rise in the early 1990s, the media was quick to call it the “Wireless Revolution”. With that in mind, the enormous changes that have taken place since the deployment of “4G” certainly qualify as Wireless Revolution 2.0. Compared to even a few years ago, the number of services available on a smartphone or tablet is truly incredible -- and they are available anywhere, or least anywhere there is quality high-speed data coverage. Unfortunately, this often excludes some of the places we’re most likely to be, such as offices, sporting events, and other places where many people gather. Consumers typically blame inadequate coverage for these annoyances, but the problem is more likely a lack of capacity.

This is because the sheer speed at which this revolution has occurred and the data that users generate are overwhelming the ability of wireless carriers to accommodate them. Much has been written about just how much data current high-speed data services are generating, introducing new words like zettabytes (1 trillion gigabytes) to our vocabulary. Although such astronomically high numbers don’t convey anything comprehensible to most people, they provide a pretty good idea of the extraordinary amount of traffic carriers must deal with -- and this is just the beginning. The next generation of LTE (LTE Advanced) will offer consumers speeds that are now available only via wired services like Fiber to the Premises (FttP) and cable. The result is a growing data tsunami that wireless carriers will need to continually stay ahead of.

Consequently, carriers are now using all available means to offload this traffic from their networks, including small cells and even Wi-Fi. However, distributed antenna systems (DAS) combine the ability to provide both coverage and capacity in places where RF energy cannot reach and in dense-traffic areas, while also offloading data from the overall network.

A DAS can simultaneously accommodate Wi-Fi as well as carriers’ small cells, and can accomodate all carriers serving a given area and allocate network capacity to and from specific places. However, to be viable both now and in the future, a DAS solution must first and foremost rely heavily on digital technology with transmission via optical fiber throughout the network, which provides extraordinary flexibility for expansion and reconfiguration.

As most DAS systems are either purely analog or a combination of analog and digital, they cannot reap the benefits that a purely-digital solution provides. Only when the signals remain in the digital domain from where they enter the network to where they are converted to analog for over-the-air transmission can true flexibility be achieved. Only true digital systems also allow control of every element of the network via software, including detailed monitoring, addition of new features, and “plug-n-play” configurability, to name a few.

Finally, the system must be cost-effective and this includes not just being less costly when installed but throughout its life, which will invariably include the addition of new features, changes to wireless standards, new frequency allocations, extensions if required, and maintenance. In all cases a digital system, as it can require fewer components, is inherently more reliable, and can reduce instances of “ripping and replacing” hardware to upgrade the network. In short, while most DAS systems are currently not fully digital, the enormous benefits digital systems provide will ensure that in the future they all will be.

Dali Wireless
Email this article to a friend!



You Can
Search by Number:

  All ads, articles, and products in printed issues of MPD have a number. Just look for the red arrow in the ad or at the end of the article or product description.


Uncertain Times for DefenseIn 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...

Home | About Us | Archives | Editorial Submissions | Media Kit (PDF) | Events | Subscribe/Renew | Contact Us
Copyright © 2014 Octagon Communication Inc. DBA MPDigest /, All Rights Reserved.
Privacy Policy | Site Map