A cellular receiver front-end with blocker sensing

A receiver front-end supporting contiguous and non-contiguous intra-band carrier aggregation scenarios with a fully integrated spectrum sensor that can detect both in-gap and out-of-band blockers has been implemented in 65nm CMOS technology. An NF of 2.5dB is achieved using a noise canceling LNTA, a...

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Bibliographic Details
Main Authors: Abdulaziz, Mohammed, Ahmad, Waqas, Nejdel, Anders, Tormanen, Markus, Sjoland, Henrik
Format: Conference Proceeding
Language:English
Subjects:
active filter
Agglomeration
Capacitors
carrier aggregation
Carriers
CMOS
Consumption
Gain
Gain measurement
Integrated circuits
linearization techniques
Mixers
Noise
noise cancellation
Noise measurement
Operational amplifier
Radio frequency
receiver
Receivers
Sensors
Tuning
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Summary:A receiver front-end supporting contiguous and non-contiguous intra-band carrier aggregation scenarios with a fully integrated spectrum sensor that can detect both in-gap and out-of-band blockers has been implemented in 65nm CMOS technology. An NF of 2.5dB is achieved using a noise canceling LNTA, and linearized OTAs are used to achieve an IIP3 improvement of up to 6.5dB in-band and 11dB at the filter band edge. The spectrum sensor can detect blocker levels in 22 steps of 9MHz between -100MHz and 100MHz IF. The system consumes between 36.6mA and 57.6mA from a 1.2V supply.
ISSN:2375-0995
DOI:10.1109/RFIC.2016.7508295