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WEBMicrowaves & RF reports on the latest insights, news, and advancements in the wireless industry, and the microwave and radio-frequency engineering world.
Understanding Mixers and Their Parameters - Microwaves & RF
WEBJul 8, 2015 · Understanding Mixers and Their Parameters. Mixers remain an important part of most RF/microwave systems, prompting the need to understand this vital component and its parameters. Download this article in .PDF format. A mixer is a three-port component, which performs the task of frequency conversion. Mixers translate the frequency of …
Introduction to RF & Wireless Communications Systems
WEBOct 13, 2017 · RF itself has become synonymous with wireless and high-frequency signals, describing anything from AM radio between 535 kHz and 1605 kHz to computer local area networks (LANs) at 2.4 GHz. However, RF has traditionally defined frequencies from a few kHz to roughly 1 GHz. If one considers microwave frequencies as RF, this range extends to …
Where Are They Now? - Microwaves & RF
WEBDec 5, 2011 · LNR Communications is now part of L3-Narda in Hauppauge, NY. Logimetrics (a supplier of laboratory-grade traveling-wave-tube amplifiers) was absorbed into Instruments For Industry (IFI). IFI has confirmed that several of the Logimetrics guys are there and they can evaluate and/or repair Logimetrics amps.
Learn About Circulators and Isolators | Microwaves & RF
WEBAug 20, 2016 · Circulators and isolators are three-port passive electronic devices that help direct the flow of microwave signals in RF equipment and systems. A port is defined as a connection point for either an input signal, output signal, or termination. Figure 1a shows the standard schematic symbol for a circulator. The arrow indicates the unidirectional ...
Doherty Amplifier Combines High Power and Efficiency
WEBOct 7, 2017 · This is the best result in industry in terms of power gain flatness, output power, and back-off efficiency achieved over a wide frequency bandwidth of 1.8 to 2.2 GHz. High backoff efficiency, above 50%, and high-power gain, about 12 dB, can be achieved from 1.8 to 2.2 GHz at an exceptionally high output-power level of about 1 kW corresponding ...
Marines Modernize with L3Harris HF Radios - Microwaves & RF
WEBDec 18, 2019 · The U.S. Marine Corps has selected Falcon III AN/PRC-160 high-frequency (HF) portable radios from L3Harris to replace legacy L3Harris HF radios. The $50 million follow-on delivery order is part of the Navy Portable Radio Program five-year IDIQ contract received in 2017 and is part of the Marines’ High Frequency Radio II …
An Introduction to the VNA and Vector Network Analysis
WEBSep 12, 2023 · Because S 11 shows very little reflection—or high return loss—across the Wi-Fi band, the stimulus signal from the VNA must be efficiently radiating away. This antenna is therefore functioning properly. The Touchstone Matrix . S 11 represents the ratio of the reflection back to Port 1 to the signal emitted by Port 1, and S 21 is the ratio of the signal measured at Port 2 to the signal ...
Comparing Narrowband and Wideband Channels - Microwaves & RF
WEBFeb 7, 2018 · In short, wideband channels can carry more information than narrowband channels, but they typically require more power to do so. Narrowband channels typically carry much less information than wideband channels and operate over shorter distances between transmitter and receiver. But because narrowband channels have less noise and typically lower ...
What’s the Difference Between Broadband and Narrowband RF ...
WEBNov 15, 2014 · For its part, narrowband refers to communications that use frequency content within the coherence band of a frequency channel. Generally, it refers to frequency operation that is narrower than broadband. Of course, these definitions somewhat depend upon applications as well. As a result, it is easier to focus on particular technological ...