Times Microwave Systems debuted the Times-Protect LP-GPX-05-T lightning protector for GPS receivers. The LP-GPX-05-T is a bidirectional filter-based design with good insertion loss and return loss characteristics from 1,000 to 2,000 MHz. The lightning protector is for GPS receivers that require as much as five volts DC power supplied on the center pin for L1, L2 and L3 bands. … [Read more...]
Band Pass Filter Chip With User Selectable Passband Frequency
Hittite Microwave Corporation introduced the HMC897, a new band pass tunable filter chip that is ideal for pre-selection in advanced communications systems, military radar, EW/ECM, SATCOM, space, industrial and medical systems. Tunable over a 9 to 19 GHz frequency range, this new, ultra-compact, varactor-tuned MMIC filter is inherently stable and has small physical size and … [Read more...]
Frog Calls Inspire Wireless Network Innovation
A team of researchers at the Polytechnic University of Catalonia were inspired by Japanese tree frogs to create a new algorithm for wireless nodes. The inspiration came from the male tree frogs’ ability to desynchronize their calls so that each call is distinct. Just as the frogs have no system of central control organizing this desychronization, a modern wireless network … [Read more...]
Unwanted Conductive and Radiative Emissions
The last post indicated that RF signal energy coupling from the emitter to the receptor can be by conduction or by radiation and that we would discuss that later. Well it’s later! The two coupling processes are very closely linked. Radiative coupling always starts out as a conductive signal and ends up as a conductive signal. In between and especially at … [Read more...]
SMD Power Ferrite Designed for High Current Applications
A new SMD power ferrite has been designed for high current applications. The new WE-MPSB series are high-performance SMD power ferrites utilizing multilayer technology. They were designed specifically for the suppression of electromagnetic interference in power supplies and DC/DC converters. In contrast to common SMD ferrites, these components provide high impedance even at … [Read more...]
New Graphene Filter Design Could Make Wireless Communications More Flexible
A group of Columbia University Ph.D. candidates has developed a way to use a small sheet of graphene as a tunable resonator in a filter that is very small, low powered and easily tunable. This device could enable more versatile wireless circuits that would operate at many different frequencies while also able to integrate with existing silicon chip technology. The research … [Read more...]
Ultrasound Receiver Conditions Eight Channels of RF to Baseband
Analog Devices unveiled its octal ultrasound receiver with on-chip digital I/Q demodulation and decimation filtering, the AD9670. Because of the embedded demodulation and decimation feature, the AD9670 is able to condition eight channels of data from RF to a baseband frequency, reducing the processing load on the system FPGA by at least 50 percent. The AD9670 also integrates a … [Read more...]
High-Speed Differential Probing with a Single Probe Tip
Agilent Technologies Inc. introduced InfiniiMode differential probes, a new generation of low-cost, 1.5-GHz, 3.5-GHz, and 6-GHz differential active probes for general-purpose, high-speed differential probing. They are especially well suited for digital system design, component design/characterization and differential serial bus measurements. The Agilent N2750A Series probes … [Read more...]
Front-End Solution Integrates RF Content Between Transceiver and Antenna
Skyworks Solutions, Inc. announced the launch of a front-end system that integrates all RF and analog content between the transceiver and antenna for simplified design within demanding next generation mobile platforms. SkyOne condenses multiband power amplifiers and high throw switches along with all associated filtering, duplexing and control functionality into a single, … [Read more...]
New Line of Low PIM Coaxial Jumpers
Pasternack Enterprises has expanded its line of high performance, low PIM corrugated coaxial cable jumpers intended for RF communications applications that benefit from low PIM, including tower top jumpers, shelter/cabinet jumpers, antenna feed lines and 2 way land mobile radio installations. The 1/2'” corrugated coaxial jumpers are 100% RF tested for PIM and VSWR and ensure … [Read more...]
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