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AWR2243 bảng dữ liệu(PDF) 38 Page - Texas Instruments

tên linh kiện AWR2243
Giải thích chi tiết về linh kiện  AWR2243 Single-Chip 76- to 81-GHz FMCW Transceiver
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9.3.1.2 Transmit Subsystem
The AWR2243 transmit subsystem consists of three parallel transmit chains, each with independent phase and
amplitude control. All three transmitters can be used simultaneously or in time-multiplexed fashion. The device
supports binary phase modulation for MIMO radar and interference mitigation. For AWR2243, additional phase
shifters are associated with Tx channels, and these can programmed on a per chirp basis.
Each transmit chain can deliver a maximum of 13 dBm at the antenna port on the PCB. The transmit chains also
support programmable backoff for system optimization.
Figure 9-2 describes the transmit subsystem.
û-
0/180°
(from Timing Engine)
6 bits
Loopback Path
Fine Phase Shifter Control
PCB
13dBm
@ 50 Ÿ
LO
Self Test
Figure 9-2. Transmit Subsystem (Per Channel)
9.3.1.3 Receive Subsystem
The AWR2243 receive subsystem consists of four parallel channels. A single receive channel consists of an
LNA, mixer, IF filtering, A2D conversion, and decimation. All four receive channels can be operational at the
same time an individual power-down option is also available for system optimization.
Unlike conventional real-only receivers, the AWR2243 device supports a complex baseband architecture, which
uses quadrature mixer and dual IF and ADC chains to provide complex I and Q outputs for each receiver
channel. The AWR2243 is targeted for fast chirp systems. The band-pass IF chain has configurable lower cutoff
frequencies above 175 kHz and can support bandwidths up to 20 MHz.
Figure 9-3 describes the receive subsystem.
Self Test
PCB
50 W
GSG
Loopback
Path
DAC
DSM
DSM
RSSI
I
Q
LO
DAC
Figure 9-3. Receive Subsystem (Per Channel)
AWR2243
SWRS223A – FEBRUARY 2020 – REVISED AUGUST 2020
www.ti.com
38
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Product Folder Links: AWR2243


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