ADI experts tell the technical genes behind the software-defined radio technology boom market
For the general public, software-defined radio (SDR) is a very "high-level" topic, and even for most electronic technology engineers, it is still a bit of a feeling of spring. In fact, this technology has been proposed for twenty or thirty years, limited by high cost and complex technical implementation, and has always been the exclusive favor of military applications. Well-known applications include the US Joint Tactical Radio System (JTRS) program. At the Yiwei Media Industry Forum held recently, Zhang Xinming (Eagle), senior customer application manager of ADI Channel Management and Emerging Markets Division, delivered a keynote speech on "Innovative Applications of Software-Defined Radios". In the speech, Eagle took the AD936x series of RF transceivers that ADI began to launch in 2013 as an example. "The AD9361 and AD9364 have been in short supply since their launch, and our production and technical support have not kept pace with customers." Define a hot market where radio technology is unknown. Eagle's sharing of technical features of the AD936x includes an introduction to the ecosystem of ADI in collaboration with Xilinx and Avnet, as well as applications in the areas of unmanned aerial vehicles, LTE communications infrastructure and defense electronics. This lecture interprets the technology "gene" behind the software-defined radio boom from a professional and technical perspective, and changes the impression that the software-defined radio technology has always been "yangchun white snow" and "far away from us". The software-defined radio has actually Really come to our side. To understand the hot technical genes of the AD936x application, let's first meet the ADI "star" product line. The AD936x includes two dual-channel AD9361 and single-channel AD9364 two public versions and a number of market-specific, customer-specific models that are a family of high-performance, highly integrated RF transceivers with leading programmability and broadband capabilities. It is ideal for a wide range of transceiver applications. The device combines an RF front-end with flexible mixed-signal processing, integrates a frequency synthesizer, and provides a configurable digital interface to the processor, simplifying design and engineering lead-time. Operating over the frequency range of 70MHz to 6.0GHz, the devices cover most licensed and unlicensed bands and support channel bandwidths from 200kHz to 56MHz for a wide range of applications. Because of this, Eagle believes that the AD936x application is popular because of its breakthrough chip design and advanced production test process, ensuring that highly integrated chips can meet the application requirements of software-defined radios, meeting the long-term requirements for RF bandwidth and integration. S180 is a must-have for many application/market OEMs, providing a unified reprogrammable radio platform for multiple radio solutions. The AD936x offers exceptional flexibility and configurability as well as support for field upgrades, but before the advent of the AD936x, the integrated wideband transceiver solution was limited in performance and adjustable bandwidth, and many OEM manufacturers lacked a practical and cost-effective SDR design. Ability or resources. Discrete SDRs are complex and costly to design, and many customers lack effective hardware and RF signal chain design capabilities, resulting in time-to-market delays, so they need better integrated software-defined RF transceivers. The integrated RF transceiver AD936x encapsulates the signal chain in a software configurable IC that includes mixers, frequency synthesizers for transmit and receive channels, analog filtering, data converters, and more. The transceiver is a universal, reprogrammable radio platform for a wide range of applications, enabling flexible, configurable, field-upgradable, low-risk reference designs that help customers streamline bills of materials for fast time to market and have smaller footprints and good Heat dissipation and excellent energy saving. In terms of key features, the AD936x achieved a great breakthrough, which is the key to its great success in the market. The frequency range is 69% better than competing products and the channel bandwidth is increased by 111%, which is an "hard to resist" temptation for any enterprise that focuses on SDR technology applications. "Compared with competitors is the only one that can really be used. The similar products on the market, only to 3.8G, bandwidth of 28 megabytes, but does not support GSM 200KHz bandwidth, 1GHz noise figure is 3.5dB, 2GHz will not dare Marked, and we are 2dB and 3dB respectively," Eagle pointed out. Compared to the AD936x, today's existing integrated broadband RF transceiver solutions are limited in performance and adjustable bandwidth. And engineers face increasingly complex design challenges where analog engineers need to understand FPGA and embedded design and system processing techniques, while digital engineers need to understand the basics of analog design, and hardware engineers need to use software modeling, all for any design engineer. They are extremely challenging. Engineers have been facing increasing market and technical challenges, and they need to provide reference designs that include software source code and drivers. ADI's timely introduction of the AD936x integrated design, high-performance technical indicators to meet these needs. In today's emphasis on industrial ecology, good core chip products are by no means isolated, and a good application ecosystem is very important. Since the introduction of the AD936x series, ADI has worked hard to create a very friendly application ecosystem that will help customers accelerate time to market and reduce risk. “In terms of fast time to market support, we have provided a quick time to market kit, ADI's RF board + Xilinx's FPGA board. This board can be plugged into the PC and plugged in according to the interface standard. The entire development system comes out and can be directly sent and received. This demo really is to collect your own hair, you can connect the antenna," Eagle pointed out. "We have several sets of development boards for S1, S2, S3, and S4. The difference is that S1 is a single-receipt single-issue, its frequency range is up to 4GHz, S2 is double-receiving, and S3 and S4 are full bandwidth. The board, directly connected to Xilinx's latest FPGAs, we can provide RF boards. After purchasing the Xilinx development board, download our design files, including various supported configuration applications, supported by ADI, Xilinx and Avnet. Said Eagle. “ADI and Xilinx are working together to make it easier for Chinese engineers to face market and design challenges. We offer a lot of design resources, competitive products and more reference designs so they can design Differentiated, high-performance, low-cost products, and can shorten time to market, this is the mission of ADI and Xilinx, and the reason and background for our cooperation." Eagle further pointed out. Software-defined radio has long been limited by factors such as cost, development complexity and technology maturity, and military applications have become its largest market. Today, this situation has changed dramatically. "There are a lot of applications for software-defined radios, specifically communication infrastructure like microcells, picocells, various data cards, high-definition image transmission for drones, etc." Eagle pointed out. Eagle site shared the application of AD9361 on MIMO platform, including: LTE base station supports at least 2 receive 2 rounds (mobile phone is 2 receive 1 round); LTE active antenna beam synthesis application - base station signal beam synthesis, increase cellular base station Overall efficiency; support for beamforming required by the 802.11ac standard for wireless LAN; direct lookup applications - including RF navigation, distance measurement, and RF positioning. In recent years, the unmanned aircraft market is very popular, and Chinese manufacturers are undoubtedly the leader in the market. However, video capture real-time picture transmission, which is an important function of the UAV, faces many problems - bandwidth, stability, transmission distance, etc. of wireless transmission. “There are customers who have found us and used their image solutions to integrate our RF solutions with communication solutions, which is a very good solution to the problem of stable wireless transmission of video that has previously caused them headaches,†Eagle said. It is reported that this type of application currently has great market potential in unmanned aerial vehicles. The test instrument is another innovative application area that is focused on the Eagle site. “Like spectrum analyzers and network analyzers, very complicated and expensive equipment, which is not convenient to carry, which brings great inconvenience to field testers. With the AD9361, our customers have realized the portability of these devices, at a very low level. The power consumption achieves very good functional characteristics.†In the successful AD936x customer case disclosed by ADI, the USRP B210 and B200 wireless radio platform products of Ettus Research, a subsidiary of National Instruments, are the first truly fully inherited, single The board's universal software radio peripheral platform continuously covers the frequency range of 70MHz to 6 GHz. Precision machining is a kind of machining, which is a workpiece to meet the requirements of the drawing of the line tolerance of the processing process, the workpiece in this process, will have certain changes in their performance characteristics and shape structure. Precision Machining,Casting Exhaust Manifold,Stainless Stee Milling,Custom Cnc Machining Part Tianhui Machine Co.,Ltd , https://www.thcastings.com
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