White Papers

  1. 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.

  2. 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.

  3. The Complete Guide To Troubleshoot And Fine Tune Digital Predistortion 2/22/2022

    This article describes the digital predistortion (DPD) function for the ADRV9002. Some of the debugging techniques used can also be applied to general DPD systems. First, background information on DPD is outlined along with some of the typical issues users may encounter when experimenting with their system. Lastly, it describes tuning strategies that can be applied to the DPD algorithm with the help of a DPD software tool to analyze performance.

  4. Low Phase Noise DAC-Based Frequency Synthesis For Fast Hopping Wideband Microwave Applications 2/22/2022

    The excellent phase noise exhibited in ADI’s latest generation of high speed DACs enables size, weight, power/performance, and cost benefits in next-generation low phase noise, fast hopping agile RF/microwave synthesizers. To meet the most demanding phase noise system requirements, the suggested fixed clock implementation is a DRO locked using an analog PLL. 

  5. Radio Architecture Matters: A Review Of RF Sampling Vs. Zero-IF 1/19/2022

    The growing demand for wireless services not only challenges our limited spectral resources, it also challenges the radio designer to select the correct radio architecture. This article will examine two common radio architectures and learn how each solves the unique challenge of growing co-location issues.

  6. Technological Solutions To Overcoming Hurdles In Unmanned Aerial Vehicles And Systems Market 11/22/2021

    Over the last decade, unmanned aerial vehicles and systems (UAVs/UASes)—also referred to as drones—have become widely popular and gained significant interest in commercial, consumer, and government markets. As these technologies are evaluated, radar performance, and versatility should be among key criterions, factoring more than just the cost of the hardware.

  7. 5G Technology Devices For An O-RAN Wireless Solution 11/22/2021

    O-RAN was created as a catalyst to transform the wireless community, to enable new channels of wireless equipment, and to enable innovation to fulfill the promises made by 3GPP about 5G.1 To be successful and cost-effective, open sources of radio equipment and optimized 5G technology devices must be available.

  8. Clock Skew In Large Multi-GHz Clock Trees 10/18/2021

    This article identifies several areas of concern in the design process, manufacturing process, and application environment that can cause clock skews of 1 ps or more. With regards to these areas of concern, several recommendations, examples, and rules of thumb will be provided to help the reader gain an intuitive feel for the root cause and magnitude of clock skew errors.

  9. Why Millimeter Wave Requires A Different Approach To DPD, How To Quantify Value 9/15/2021

    The purpose of this article is to draw a comparison between a traditional sub-6 GHz macrocellular and a mmWave base station radio and antenna design. It further covers how these design differences impact DPD implementation in mmWave arrays relative to sub-6 GHz radios.

  10. Transceiver Phase Noise Teardown Informs Performance Capability With An External LO 8/9/2021

    Software-defined radios are one of the leading topics in the industry today. The software-defined radio’s performance capability has been fueled by the release of radio frequency (RF) transceivers offering complete radio solutions in monolithic integrated circuits (ICs).