Dual-beam Rx Active Beamforming IC
F6121
10.7 – 12.75 GHz
Short-Form Datasheet
Description
Features
The F6121 is a 16-channel dual-beam receive active beamforming
RFIC designed for application in Ku-Band SATCOM planar phased
array antennas. The IC has eight RF input ports, two RF output
ports, and 16 (8 per beam) phase/amplitude control channels. The
eight input ports of the IC can be driven by eight single-polarized
elements or four dual-polarized elements of an electronically
scanned array (ESA). Each channel has 6 bits of digital phase and
gain control resolution spanning 360° and 26dB of dynamic range,
enabling precise beam pattern and polarization control.
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10.7 – 12.75GHz operation
Supports 4 dual-pol or 8 single-pol elements
Two simultaneous and independent beam outputs
360° phase control with 6-bit resolution
26dB gain control with 0.45dB step size
2.3V nominal single supply input
Standard 1.8V digital logic
IDAC for external LNA biasing
The IC operates from a single supply of 2.1 - 2.5V. When paired
with the Renesas F6921 LNA, it achieves a typical cascaded gain
of 30dB, while minimizing the front end feed loss due to the
flexibility of LNA physical placement near the antenna feeds. The
chip includes power management features such as a low-power
standby mode, independent enable controls on every channel, and
a single-beam mode activated via a dedicated control pin. The
device SPI bus and control pins operate from standard 1.8V logic
at speeds up to 50MHz. Advanced digital modes and large on-chip
memory allow for < 100ns beam position switching times at the
array level, greatly reducing dead time and latency.
Temperature compensation
Temperature sensor w/ digital readout
Advanced digital modes with fast beam steering
On-chip beam-state memory
3.8 4.6 0.9 mm, 63-pin FCBGA
Typical Applications
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Phased array antennas
Finally, the compact and CTE-matched FC-BGA organic package
with all single-ended 50ohm matched RF ports and 0.5mm pitch
greatly simplifies the physical integration of these devices onto
large antenna panels.
Ku-Band SATCOM terminals
Aerospace, maritime, and SOTM
Block Diagram
© 2020 Renesas Electronics Corporation
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June 4, 2020