Downloads

  1. Calibration-Free Return Loss Measurement 7/20/2022

    Return loss in a wired or wireless transmitter is the ratio of transmitted power to reflected power when power is being delivered to a load. It is a critical parameter that describes transmission efficiency and can be used as an indicator that excessive power is being reflected from a load back to the source. In a wireless transmitter with poor antenna return loss, a high level of reflected power can damage the power amplifier that is driving the antenna.

  2. Discrete Transistor: QPD2025D 7/20/2022

    Qorvo's QPD2025D is a discrete 250-micron pHEMT which operates from DC to 20 GHz. The QPD2025D is designed using Qorvo's proven standard 0.25um power pHEMT production process. 

  3. A Review Of Wideband RF Receiver Architecture Options 7/19/2022

    The heterodyne receiver has been the standard receiver option of choice for decades. In recent years, the rapid advance of analog-to-digital converter (ADC) sampling rates, the inclusion of embedded digital processing, and the integration of matched channels now offers options for the receiver architect that were not practical only a few years ago.

  4. Combining The Best Of Both Worlds: True Time Delays And Phase Shifters 7/19/2022

    Electronically scanned arrays (ESAs) utilize PSs or TTDs or a mix of both to point the summed beam toward the desired direction within an array’s steering angle limits. Adjustable attenuators used for tapering can also be considered as beamforming elements. 

  5. How Digitally Tunable Filters Enable Wideband Receiver Applications 7/19/2022

    In today’s multichannel, wideband multioctave tuning RF receivers, it is often necessary to eliminate unwanted blockers to preserve the fidelity of signals of interest. Filters have played an essential role in reducing these unwanted signals, particularly in the receiver RF front end and local oscillator (LO) portions of these systems. 

  6. RF And Microwave Filter Capabilities 7/19/2022

    Knowles Precision Devices offers filter technology spanning from VHF to V Band. Additional options include 300 MHz to 75 GHz in Bandpass, Lowpass, Highpass and Bandstop configurations.

  7. How GaN Helps CATV Providers Find Balance 7/6/2022

    CATV technology consisting of gallium arsenide (GaAs), GaN hybrids and monolithic microwave integrated circuits (MMICs) has advanced to extend bandwidth and increase system performance. But to keep pace with the latest data over cable service interface specifications, GaN devices deliver more than the necessary efficiency, linearity, and performance to ensure reliable data transmission and signal integrity.

  8. Everything You Need To Know About Tuning Elements 7/6/2022

    Operating in the microwave through millimeter wave (mmWave) bands, Knowles Johanson brand Microwave Tuning elements are specifically designed for tuning microwave circuits such as filters, oscillators, delay lines, multiplexers, and dielectric resonant structures.

  9. Multi-Tone Test Systems Makes RF Radiated Immunity Testing Faster And Versatile 7/6/2022

    AR’s state-of-the-art multi-tone systems are designed to test RF Radiated and Conducted Immunity faster than ever before. Both the MT2IEC10V3M and MT4IEC10V3M fully comply with IEC 61000-4-3:2020 Edition 4, allowing for multiple tone testing, reducing test time by up to 74%.

  10. Webinar: Using MLCCs For Wireless Resonant Circuits 6/29/2022

    To ensure the efficiency and reliability of high-power wireless charging applications such as electric vehicle charging stations, wireless power transfer circuits need stable, high-capacitance, high-voltage capacitors to serve as the tank capacitor in the LC resonant circuit.