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20èmes Journées Nationales Micro-Ondes
RF microtech

20èmes Journées Nationales Micro-Ondes

on 1 May 2017 in News | 0 comments

The twentieth National Microwave Day, on the 16th-19th  May 2017 in Saint- Malo Registration Deadline on the 5ft May 2017 The National Microwave Day takes place every two years, gathering the French community of microwave, working on a wide range of fields, from components, passive and active microwave circuits to communication system and radars. This Congress is also open to scientists from all over the world, whom would like to present their works in French. The conference is an excellent opportunity that allows PhD Students to show their works. An industrial exposition will be also organized during all the last of the conference. It will take place in the poster session area, so to allow the exhibitors to show their products and services to all the community. On the 16th May, the previous day of the conference, an entire day will be dedicated to the theme of millimeter wave hardware and their different fields of application and issuing about the electromagnetic modelling of antennas. After the last NMD Conference held in Saint-Malo in 1997, the organizing committee will be waiting for you as many as possible at “Palais du Grand Large de Saint-Malo”. RF Microtech will be present at the exhibition and represent “IHP Microelectronics GmbH”.  Meet us at the IHP stand at the conference...

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RF Microtech Develops Complex UWB Filter In Record Time
RF microtech

RF Microtech Develops Complex UWB Filter In Record Time

on 19 Apr 2017 in News | 0 comments

Another success story for RF Microtech. A great achievement for the company, whose outcomes in projecting Complex UWB Filter have been published by AWRCORP, but also exalted on the Microwave Journal (see the links below) The Design Challenge Expo Milano 2015 was a universal exposition that hosted over five thousand events in six months. The organizers had contracted with several mobile service providers to deploy stations throughout the expo area to provide complete mobile service coverage for the event. In addition, Italian government security services relied on mobile base stations strategically placed throughout the expo to ensure communications for the event, including the public safety network. However, the lobe of one of the mobile service antennas directly interfered with the communication signals of a critical security control base station and the issue had to be resolved immediately as the expo was opening in less than a month. RF Microtech was asked to provide a validated full-wave electromagnetic (EM) simulation of a 2-port ultra-wideband (UWB) filter that could reject all five mobile service bands with greater than 35 dB of rejection. Furthermore, the filter had to ensure 80 MHz to 6 GHz wide-band transmission with insertion losses less than 2 dB RF Microtech’s client, H3G, also required that the device fit within a 1x1x0.2 meter enclosure, while still providing acceptable levels of coexistence to 6 GHz without signal degradation. The validated EM simulation had to be delivered within two weeks and the complete deployable device by the time the expo opened. The Solution “We chose Microwave Office because it could easily and quickly optimize the cascade of a series of full-wave component blocks of a very large and complex UWB filter structure. Using Microwave Office, we were able to reduce optimization and development time by 90 percent, a critical factor in delivering this project in a very short timeframe.”stated Roberto Sorrentino Honorary President of RF Microtech The RF Microtech design team immediately went to work developing a circuit model of five independent notched-band filters (NBFs) cascaded along a transmission line. The team chose NI AWR Design Environment, specifically Microwave Office circuit design software, for this time-critical project. Each independent filter was designed as a 4th or 5th order NBF, composed...

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Switched Filter Bank
Fratticcioli

Switched Filter Bank

on 19 Nov 2014 in News | 0 comments

The design of the four-channel switched filter bank  in the S- and C-band using p-i-n-diode switches is described in a paper published in the October issue of IEEE-MTT Transactions. The paper by F. Gentili, L. Urbani, G. Bianchi, L. Pelliccia, R. Sorrentino is entitled “p-i-n-Diode-Based Four-Channel Switched Filter Bank With Low-Power TTL-Compatible Driver”. Narrowband filters designed on suspended substrate stripline lead to an average Q factor of 580. Spurious responses are suppressed from DC to roughly 19 GHz. The biasing circuit is TTL compatible.  The abstract of the paper is available...

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New Paper on “MEMS-based fine tuning of high Q-factor E-plane filters”
RF Microtech

New Paper on “MEMS-based fine tuning of high Q-factor E-plane filters”

on 25 Jul 2014 in News | 0 comments

A new concept for the fine tuning of high-Q bandpass filters to compensate for small response deviations due to manufacturing tolerances and temperature variations is presented in the paper “MEMS-based fine tuning of high Q-factor E-plane filters”, published in the International Journal of Microwave and Wireless Technologies. (EuMA and Cambridge University Press) . The paper shows how discrete frequency tuning steps are obtained using a rectangular waveguide resonator loaded with a reconfigurable E-plane circuit. As an example, 0.1% frequency steps can easily be obtained in a 10 GHz resonant,cavity, while the use of low-loss substrates ensures high-quality factors of the order of...

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