Ted Rappaport, founding director of NYU WIRELESS and a leading proponent of using the millimeter wave spectrum for wireless communications, discusses the FCC's recent rulemaking actions and technology developments that are paving the way to 5G.
Attendees of the 2014 International Microwave Symposium (IEEE-IMS) Exhibition will have the opportunity to see printed circuit boards made live and in-person by visiting LPKF Laser & Electronics in booth #1108. LPKF has announced that they will be debuting the first ever hybrid milling/laser prototyping system, the ProtoMat D104. Also at the show will be a UV laser prototyping system, the ProtoLaser U3. The show will be hosted in Tampa, FL., June 3-5 at the Tampa Convention Center.
Rogers Corp. held a ribbon-cutting ceremony to dedicate the company’s new Innovation Center in Burlington, Massachusetts on March 25. More than 125 government officials, community leaders, technology company representatives and other guests were on hand to celebrate and tour the Center, which is located within Northeastern University’s George J. Kostas Research Institute for Homeland Security.
SemiGen Inc. (www.semigen.net), an ISO and ITAR registered RF/Microwave assembly, automated PCB manufacturing, and RF Supply Center, provides high-quality, automated PCB assembly for high-mix, low- to medium-volume printed circuit boards.
Soitec has reached high-volume manufacturing of its new Enhanced Signal Integrity™ (eSI) substrates, enabling cost-effective and high-performance RF devices. The eSI products are said to be the first ‘trap-rich’ type of material in full production.
As strange as it may sound, the use of circuit defects is a growing trend in high-frequency circuit design, especially for passive circuits such as filters. More precisely, the trend is in the increased use of defected ground structures (DGSs) and defected microstrip structures (DMSs) to alter the responses of microstrip circuit designs. Just what are these DGS and DMS forms, and does incorporating them into a high-frequency circuit change the way the PCB material should be specified?
The transition, from a waveguide or coaxial connector to the PCB, is critical to the performance of the circuit, and the PCB’s thickness can impact how an end launch transition is made. Waveguide and coaxial connectors come in many shapes and sizes, as do PCB thicknesses, and matching the connector to the substrate thickness can play a large role in the overall performance and reliability of that design.