Part 2 looked at two types of RF/microwave filters, but there are many more, including ceramic coaxial filters and helical filters. They are discussed in this part. Microstrip filters Microstrip filters are built as a carefully defined pattern on a PC board. There is almost no limit to the filter designs which can be built […]
RF/Microwave bandpass filter implementations, Part 2: Cavity and comb filters
The well-known and extensively analyzed lumped-element bandpass filter is generally not suitable for the RF/microwave region, but there are many distributed-element, energy-based alternatives. Part 1 of this article established the context for these RF/microwave filters, which operate in the spectrum from several hundred MHz and higher, and increasingly cannot use discrete lumped-circuit elements (RLCs). Instead, […]
RF/Microwave bandpass filter implementations, Part 1: Distributed filters
The well-known and extensively analyzed lumped-element bandpass filter is generally not suitable for the RF/microwave region, but there are many distributed-element, energy-based alternatives. Just say the word “filters,” and for many engineers, the mention of this topic stirs a mix of feelings ranging from fear to relief. Why fear? Because filters as a topic in […]
Lasers, optics, electronics and more yield terahertz sources, Part 1 – Context
The terahertz part of the electromagnetic spectrum between millimeter waves and optical range remains a largely untapped, difficult-to-use resource; researchers are investigating different techniques for efficiently generating terahertz waves to promote the use of this part of the spectrum. Electromagnetic energy in the terahertz (THz) region of the spectrum, nominally 300 GHz/0.3 THz to 10 […]
The microstrip antenna, Part 2: Implementation
The microstrip antenna is a convenient, planar, easy-to-fabricate antenna with some attractive attributes and features, as well as some distinct limitations. Part 1 of this FAQ was a brief review of antennas and introduced to microstrip antenna design. This part continues that exploration along with related issues. Q: What’s the difference, if any, between a […]
Electromechanical relay switches cover 6.5 GHz to 40 GHz in SPDT, DPDT options
Pasternack has just launched a new series of Double Ridge Waveguide Electromechanical Relay Switches which perform over broader frequency bands, making them ideal for applications involved with electronic warfare, electronic countermeasures, microwave radio, VSAT, radar, test instrumentation, and research and development. This comprehensive selection of 12 new double ridge waveguide electromechanical switch models are now available featuring […]
Ultra-miniature GPS saw filter boasts tiny PCB footprint
Sunstu has released their Ultra-Miniature GPS Saw Filter with a PCB footprint of only 1.1mm x 0.9mm. The use of RF Filters in Global Positioning Satellites (GPS) is a necessity but it can be a challenge to find the smaller package sizes with low insertion loss. With the release of this Ultra-Miniature GPS Saw Filter, Suntsu […]
Localization chip integrates triple-band RTK/GNSS receiver and triple-redundant inertial sensor
Acienna announced the availability of the new ACEINNA OpenRTK330L, a low cost, state-of-the-art, high-performance triple-band RTK/GNSS receiver with built-in triple-redundant inertial sensors. Designed to replace the expensive and bulky precision RTK/INS systems used in today’s autonomous systems, this compact navigation solution meets the challenging performance, reliability and cost requirements of the automotive market along with […]
RF PIN diodes now available from California Eastern Laboratories
California Eastern Laboratories (CEL) and LITEC Corporation announce a partnership allowing CEL to exclusively promote and sell LITEC’s RF PIN diode products in the Americas, Israel and India. CEL has a 60+ year history of marketing RF components to those territories. LITEC PIN diodes have been designed into most of the commercial radio systems in […]
Power dividers, directional couplers handle 40 GHz
Cinch Connectivity Solutions, a Bel group company, launches 40GHz power dividers and directional couplers designed to meet the higher frequency requirements in telecommunications and 5G applications. The Midwest Microwave 40 GHz power dividers and directional couplers are small, lightweight, and ruggedly built. They cover a wide bandwidth of 6 to 40 GHz with low insertion loss and low […]
