Maxim says it has introduced what it claims are the world's first monolithic RF predistorter ICs. Each MAX2009/2010 device provides AM-AM and AM-PM distortion correction by introducing adjustable gain and phase expansion into a power amplifier (PA) lineup. These expansion characteristics are specifically designed to counteract the gain and phase compression exhibited by LDMOS power amplifiers. A joint Maxim/Motorola study has shown that the devices provide substantial improvements in both PA linearity and efficiency. By combining the MAX2009 with Motorola's MW4IC2230MB multistage driver IC and its discrete MRF5P21180, designers can expect up to 5,7 dB of IM3 and 4 dB of ACPR enhancement or, at an equivalent linearity, 5,5% drain efficiency improvement, it said. The results are representative of a Class-AB PA supporting two WCDMA 3GPP modulated tones with 10 MHz of channel spacing. According to Maxim these basic linearisation enhancements are applicable, moreover, for virtually any signal format covering the 500 to 1100 MHz (MAX2010) and 1200 to 2500 MHz (MAX2009) bands. For an input signal with a 10dB peak-to-average ratio, the AM-AM correction can be set to yield 1 to 6 dB of total gain expansion. Likewise, AM-PM correction can be modified to provide 4 degrees to 19 degrees of phase expansion.
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Telecoms, Datacoms, Wireless, IoT
Espressif Systems has introduced two new members of its ESP32 wireless SoC family: the ESP32-E22, the company’s first Wi-Fi 6E connectivity chip, and the ESP32-H21, an ultra-low-power Bluetooth LE microcontroller aimed at coin-cell and battery-powered devices.
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Telecoms, Datacoms, Wireless, IoT
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Quectel expands 5G portfolio with new Qualcomm- and UNISOC-based modules.
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Editor's Choice Telecoms, Datacoms, Wireless, IoT
In practice, engineers building compact RTK products keep discovering the same thing: the hardest component in the system is no longer the receiver. It is the antenna.
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Telecoms, Datacoms, Wireless, IoT
Microchip Technology has expanded its atomic clock portfolio with the radiation-tolerant Space CSAC-SA65, a Chip Scale Atomic Clock designed to deliver precise timing for space systems.
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Telecoms, Datacoms, Wireless, IoT
With 400 MHz instantaneous bandwidth and support for carrier frequencies up to 23,6 GHz, Vertex 6.0 is the industry’s first channel emulator designed for next generation 6 G and Wi-Fi 7/8 testing.
Read more...Secure, low-power Bluetooth LE SoC NuVision Electronics
Telecoms, Datacoms, Wireless, IoT
Silicon Labs unveils BG2B, its lowest-power Bluetooth LE SoC with industry-leading power efficiency, security, and integration.
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