White Papers
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How To Achieve Ultrafast Power Supply Transient Response
9/16/2022
This white paper presents practical methods for achieving an ultrafast power supply transient response in wireless and, especially, RF applications.
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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.
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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.
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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.
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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.
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A Measurement Summary Of Distributed Direct Sampling S-Band Receivers For Phased Arrays
6/17/2022
This piece details performance measurements vs. predictions of a 16-channel S-band direct sampling receiver design. The design is based on recently released direct sampling analog-to-digital converters (ADCs) clocked at 4 GSPS and sampling in the second Nyquist zone of the converter.
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Hybrid Beamforming Receiver Dynamic Range Theory To Practice
6/17/2022
A commercially available 32-channel development platform is used to validate the analysis with measurements. This article covers the following comparison of measurements and analysis for receiver dynamic range metrics in a phased array hybrid beamforming architecture.
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A Solution To Mission Critical Communications
5/23/2022
This article discusses the ADRV9001 — part of a highly agile, user-configurable, new generation SDR IC transceiver family — and its ability to provide scalable power and performance for satellite, military, land mobile, utility infrastructure, and cellular mission critical communications.
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A Quantitative Analysis Of The Power Advantage Of Hybrid Beamforming
4/19/2022
In this white paper, a comparison focused on the power efficiency of analog, digital, and hybrid beamforming architectures is presented. A detailed equation-based model for the power consumption of the three architectures was developed for a receive phased array. There are downsides of going the hybrid route, but those trade-offs are likely to be worth the power savings for many applications.
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Multichannel Phase Noise Model Validated In A 16-Channel Demonstrator
4/19/2022
This article details a systematic approach for predicting phase noise in large multichannel systems and compares it with measurements on a 16-channel S-band demonstrator. This analytic approach is based on a small set of measurements that can be used to estimate correlated vs. uncorrelated noise contributions.