24-44 GHz wideband integrated up/down converter targets 5G

March 11, 2019 //By Jean-Pierre Joosting
24-44 GHz wideband integrated up/down converter targets 5G
Analog Devices has announced the ADMV1013 and ADMV1014, a paired highly integrated microwave upconverter and downconverter, respectively.

The ICs operate over a very wide frequency range with 50 Ω-match from 24 GHz up to 44 GHz, facilitating ease of design and reducing the costs of building a single platform that can cover all 5G mmWave frequency bands including 28 GHz and 39 GHz.

Additionally, the chipset is capable of flat 1-GHz RF instantaneous bandwidth supporting all broadband services as well as other ultra-wide bandwidth transceiver applications. Each upconverter and downconverter is highly integrated, comprising I (in-phase) and Q (quadrature-phase) mixers with on-chip programmable quadrature phase-shifter configurable for direct conversion to/from baseband (operable from DC to 6 GHz) or to an IF (operable from 800 MHz to 6 GHz).

Also included on-chip are voltage variable attenuators, transmit PA driver (in the upconverter) and a receive LNA (in the downconverter), LO buffers with x4 frequency multiplier and programmable tracking filters. Most programmability functions are controlled via an SPI serial interface. Through this port, these chips also provide a unique capability for each upconverter and downconverter to correct its respective quadrature phase imbalance, hence the usually difficult to suppress sideband emission can be improved from a typical value of 32 dBc, by 10 dB or more. The combination of features provides unprecedented flexibility and ease of use while minimizing external components, enabling implementation of small form factor systems such as small cells.

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