Apollo MxFE prepares for next-gen RF design

Aerospace and defence, instrumentation and next-generation wireless communications can use the Apollo MxFE software defined, direct RF sampling, wideband mixed signal front end platform from Analog Devices (ADI).

It enables next-generation applications such as phased array radar, electronic surveillance, test and measurement and 6G communications, explained ADI.

The growth of data intensive applications is increasing the need for wider bandwidths and more rapid processing and analysis of data for 5G, 6G, Wi-Fi 7 and Wi-Fi 8, radar, signal intelligence, and other applications at the network edge which require higher speed data conversion and processing capabilities with reduced electronic testing complexity.

Developed for application versatility and rapid customisation, the Apollo MxFE offers instantaneous bandwidths up to 10GHz while directly sampling and synthesising frequencies up to 18GHz (Ku Band). This monolithic 16nm CMOS device uses high dynamic range RF ADC and RF DAC cores with the best spurious free dynamic range and noise spectral density available on the market today, said ADI. As such, Apollo MxFE helps customers accelerate design cycles and bring new products to market faster and at lower cost, while future-proofing their product designs.

Bryan Goldstein, vice president, aerospace and defence at ADI, said: “Apollo MxFE gives design engineers the flexibility to design for . . . today, as well as an ability to enhance performance over time using simple, software-defined design changes”.

Apollo MxFE’s 4T4R product offers four 12-bit RF ADCs with a sample rate up to 20Gsamples per second, four 16-bit RF DACs with a sample rate up to 28Gsamples per second, an RF input bandwidth from DC to 18GHz (Ku Band) and an instantaneous bandwidth up to 10GHz. Apollo MxFE is believed to be the industry’s first integrated radio that is capable of directly interfacing to the emerging 6G frequency bands from 7GHz to 15GHz. 

The on-chip digital signal processing (DSP) offers a real-time FFT sniffer, a full-rate programmable FIR filter, a 128-tap complex FIR filter, fast-hopping NCOs, DDCs/DUCs, and a fractional sample rate converter. The DSP is dynamically configurable, allowing for rapid changes between narrowband and wideband profiles without taking down the JESD link. Apollo MxFE supports JESD 204B/C and a very short reach (VSR) interface.

Apollo MxFE’s 8T8R product offers eight RF ADCs with a sample rate up to 8GSPS, eight RF DACs with a sample rate up to 16GSPS, an RF input bandwidth up to 16GHz, and an instantaneous bandwidth up to 3GHz. The on-chip DSP offers similar features and functionality to the 4T4R device with double the number of digital blocks, all dynamically configurable.

Apollo MxFE is augmented by variable gain amplifiers, low noise LDO and Silent Switcher regulators, clocking and multi-chip synchronisation, along with embedded digital and software technologies including algorithms and security. 

The Apollo MxFE ecosystem includes a PLL/VCO synthesiser, the LTM4702 8A µModule regulator, a 10-channel precision synchroniser  and companion TxVGA and RxVGA solutions.

http://www.analog.com 

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HBT power amplifiers deliver 0.5W of linear output power for 5G without DPD

The GRF55xx series of InGaP HBT power amplifiers from Guerrilla RF are the first of a new class of 0.5W linear power amplifiers which target all primary cellular bands spanning 615 to 4200MHz. Guerrilla RF also offers GRF56xx variants which double the series’ output power capabilities.

The linear power amplifiers are intended for 5G wireless infrastructure applications that require exceptional native linearity over temperature extremes of -40 to +85 degrees C. Each can deliver up to 26dBm of output power with better than -45dBc of ACLR performance and EVM (error vector magnitude) levels less than 1.2 per cent, without the aid of supplemental linearisation schemes such as digital pre-distortion (DPD).

The ability to beat the -45dBc ACLR (adjacent channel leakage ratio) performance metric without DPD is critical for size, cost and power-sensitive cellular applications, for example in home and commercial repeaters / boosters, femtocells, picocells and cable loss compensators found in automobiles, explained Guerrilla RF.

The first devices to be formally released are the GRF5607 and GRF5608. The span frequency ranges of 703 to 748MHz and 746 to 830MHz, respectively. They are tuned to operate within the n12, n14, n18, n20 and n28 5G new radio (NR) bands.

The ability to beat the -45dBc ACLR performance metric without DPD is critical for cellular applications like home and commercial repeaters/boosters, femtocells, and picocells, as well as cable loss compensators which are used in conjunction with automotive ‘shark fin’ antennas. In each of these use cases, the sensitivity to cost, power and size constraints prohibits the use of elaborate linearization techniques like DPD. Instead, designers must rely on the power amplifier’s native linearity to meet the stringent emissions mask requirements imposed by the latest 5G standards.

“By essentially doubling the output power, GRF is enabling customers to increase the range of their systems by up to 40 per cent,” said Jim Ahne, Guerrilla RF’s vice president of Automotive and 5G products. “Given that these new devices are pin-pin compatible with the previously released GRF55xx series, customers now have an easy path to upgrading the range capabilities of their existing repeater/booster and compensator platforms,” he added.

The GRF5607 and GRF5608 are supplied in pin-compatible 3.0 x 3.0mm, 16-pin QFN packages.

Samples and evaluation boards are available now for both the GRF5607 and GRF5608. 

https://www.guerrilla-rf.com 

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Dual-band SoC supports long-range wireless protocols for robotics

A dual-band FG28 SoC, designed for long-range networks and proprietary protocols such as Amazon Sidewalk and Wi-SUN includes radios for sub-GHz and 2.4Ghz Bluetooth LE. Silicon Labs announced that the FG28 also has a built-in AI / ML accelerator for machine learning inference and its proprietary Secure Vault technology.

“The FG28 SoC addresses several key needs for our customers when it comes to developing and deploying low-power wide area networks,” said Daniel Cooley, CTO of Silicon Labs. “By including Bluetooth, it gives users an easy way to provision and deploy new devices onto the network, while the sub-Ghz band is designed to support device communications over one mile, allowing for new edge applications in areas like smart agriculture, smart cities, and neighbourhood networks like Amazon Sidewalk.”

Emerging applications require solutions that can provide a “Swiss army knife” of connectivity options, said Silicon Labs. By providing sub-Ghz connectivity using networks like Wi-SUN, the FG28 can serve as the battery-operated end node in smart cities, for example, as a tracker on refuse collection lorries to help locate them and check the last time they were emptied. Other uses are in irrigation systems across multi-acre commercial farming operations, or as livestock trackers and health monitors on sprawling ranches. Bluetooth connectivity not only allows for devices to easily be deployed on the network, but also allows for operators to connect to the device locally for diagnostics and data downloads.

Other features which open new applications for sub-Ghz devices are what is claimed to be the industry’s first integrated AI / ML hardware accelerator in a sub-Ghz SoC. This allows for machine learning inference at the edge to enable predictive maintenance warnings, monitor soil conditions for key conditions like moisture and pH levels.

There is also 1024kbytes of flash storage and 256kbytes of RAM, to meet the memory needs of a wide range of protocols and technology stacks, said Silicon Labs.

Its Secure Vault Mid and High support allow designers to choose the level of security needed for applications while the energy-efficient radio core with low active and sleep currents with fast wakeup times preserver battery life for end nodes.
There are also up to 49 general purpose I/O pins.

The FG28 is sampling now with general availability planned before the end of Q3 2023. Derivatives optimised for Amazon Sidewalk and Z-Wave Long-Range and a standalone MCU are also planned.

http://www.Silabs.com 

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u-blox bases two GNSS positioning modules on F9 

Two GNSS positioning modules, the NEO-F9P for industrial machinery and the ZED-F9P-15B for mobile robotics, have been introduced by u-blox.

Both are based on the company’s F9 platform. The low-power NEO-F9P supports navigation and automation of moving industrial machinery and the ZED-F9P-15B provides customers in the mobile robotics market with an L1/L5 option in addition to the L1/L2 bands.

The u-blox NEO-F9P GNSS module features include concurrent reception of GPS, Galileo and BeiDou, multi-band L1/L5 RTK and short convergence times. It delivers centimetre-level accuracy in seconds and comes in the smallest form factor for a high-precision module, said u-blox. It is 50 per cent smaller than the regular u-blox ZED. 

The small size, coupled with very low power consumption and ANN-MB1 antenna compatibility, makes the u-blox NEO-F9P suitable for navigation and automation in smart antennas, UAVs (unmanned aerial vehicles) and mobile robotics. It supports open as well as standards-based correction services for enhanced performance, such as the u-blox PointPerfect GNSS augmentation service.

The modules are the company’s response to the increased requirement for precise navigation and automation in industrial applications, particularly in the UAV and mobile robotics sectors, commented Alex Ngi, product manager, industrial navigation and robotics at u-blox. “By delivering centimeter-level accuracy in a compact and energy-efficient module, the NEO-F9P, u-blox proven RTK engine, is ideal for space-constrained designs,” he added.  

The NEO-F9P offers customers an effective upgrade path from the u-blox NEO-M8P model and the ZED-F9P-15B provides existing ZED customers with an L1/L5 alternative to L1/L2.

u-blox specialises in positioning and wireless communication in automotive, industrial and consumer markets, providing services and products which let people, vehicles and machines determine their precise position and communicate wirelessly over cellular and short range networks. The company’s portfolio include chips, modules and secure data services and connectivity to empower customers to develop innovative and reliable solutions for the IoT.

The company is headquartered in Thalwil, Switzerland and has offices in Europe, Asia, and the USA. 

http://www.u-blox.com

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