Adrv9001 In A Single-Band 2T2R Tdd Type Small-Cell Application - Analog Devices ADRV9001 User Manual

Reference Manual
ADRV9001 EXAMPLE USE CASES

ADRV9001 IN A SINGLE-BAND 2T2R TDD TYPE SMALL-CELL APPLICATION

Single-Band 2T2R TDD Overview
With a minimum number of external components, the ADRV9001 transceiver can be used to build a complete RF-to-bits signal chain that can
serve as RF front end in TDD type small cell type applications. The ADRV9001 dual receiver and transmitter signal chains enable users to
implement MIMO or diversity in their system. In TDD type applications, internal DPD block can be used to linearize the external power amplifier
and improve the overall system efficiency. The ADRV9001 internal AGC can be used to autonomously monitor and set appropriate gain level
for the receiver signal chains. For time-critical TDD type applications, the ADRV9001 transceiver can be controlled by toggling control lines.
The ADRV9001 can control the external receiver/transmitter switch using its analog GPIOs and can provide power amplifier bias voltage using
AuxDAC outputs.
Table 3. Constraints and Limitations in a Single-Band 2T2R TDD Type Small-Cell Application
Functionality Constraints and Limitations
LO Generation In TDD type small cell applications, the ADRV9001 can use its internal LO to generate RF LO1 for both uplink and downlink. It is also possible to
use external LO inputs in this mode of operation.
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Figure 5. ADRV9001 in a Single-Band 2T2R TDD Type Small-Cell Application
ADRV9001
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