UMS RX-TX Core Chips | CHC3014-99F and CHP1102
Mfr. Part #：CHC3014-99F / CHP1102-98F / CHP1102-QGG
Manufacturer：UMS / United Monolithic Semiconductors
Package/Case：Die, QFN
Description：UMS provides integrated RF control ICs for S-band and X-band radar front ends. This selection includes the CHC3014-99F X-band receive/transmit core chip and the CHP1102 S-band 6-bit phase shifter family.The CHC3014-99F integrates receive and transmit signal paths, phase and amplitude control, RF switching, buffers and TTL-compatible parallel interfaces. The CHP1102-98F and CHP1102-QGG combine a 6-bit phase shifter with input and output amplifiers, providing 10 dB gain across 2.7–3.4 GHz.
UMS Core Chip Selection
| Part Number | Function | Frequency Range | RX Gain | TX Gain | RX Noise Figure | Phase Control | Attenuation Control | Output Power | Bias | Package |
| CHC3014-99F | X-band RX-TX Core Chip | 8–12 GHz | 13.5 dB | 25 dB | 5.8 dB | 6-bit | 6-bit | RX: 16.5 dBm / TX: 20 dBm | 350 mA, 5 V | Die |
| CHP1102-98F | S-band Phase Shifter | 2.7–3.4 GHz | 10 dB | — | 5.8 dB | 6-bit | — | 13 dBm | 100 mA, 5 V | Die |
| CHP1102-QGG | S-band Phase Shifter | 2.7–3.4 GHz | 10 dB | — | 5.8 dB | 6-bit | — | 13 dBm | 100 mA, 5 V | QFN |
CHC3014-99F X-Band Core Chip
The CHC3014-99F is designed for 8–12 GHz electronically controlled radar front ends. It integrates:
Receive and transmit signal paths
6-bit phase shifter
6-bit fine attenuator
Additional 2-bit tuning attenuator
RF switch and self-biased buffers
TTL-compatible parallel control interfaces
Its phase shifter covers 0–360° with 5.625° steps. The fine attenuator provides up to 34.65 dB adjustment with 0.55 dB steps, while the additional tuning attenuator provides 6 dB adjustment.
CHP1102 S-Band Phase Shifters
The CHP1102-98F and CHP1102-QGG are active 6-bit phase shifters designed for 2.7–3.4 GHz radar systems. Both devices integrate amplifiers at the RF input and output and support TTL-compatible parallel control.
They provide a complete 360° phase range with 5.625° resolution. The CHP1102-98F is supplied as a bare Die, while the CHP1102-QGG is available in a RoHS-compliant 5 × 5 mm QFN package.
Typical Applications
Active electronically scanned array radar
S-band and X-band radar modules
Transmit/receive modules
Beamforming networks
Phased-array antennas
Defense and aerospace RF systems
Frequently Asked Questions
Q1: What is the difference between CHC3014-99F and CHP1102?
The CHC3014-99F is a complete X-band RX-TX core chip integrating phase shifting, attenuation and RF switching. The CHP1102 devices are S-band active phase shifters without an integrated transmit path or digital attenuator.
Q2: Which model supports both receive and transmit paths?
The CHC3014-99F supports separate receive and transmit paths, with 13.5 dB RX gain and 25 dB TX gain across 8–12 GHz.
Q3: What is the difference between CHP1102-98F and CHP1102-QGG?
Both models provide the same 2.7–3.4 GHz frequency range, 6-bit control and 10 dB gain. The CHP1102-98F is supplied as a Die, while the CHP1102-QGG uses a QFN package.
Q4: What phase resolution does the CHP1102 provide?
The CHP1102 family provides 6-bit phase control over 360°, corresponding to a nominal phase step of 5.625°.
Q5: Which model is suitable for an X-band phased-array radar?
The CHC3014-99F is the appropriate option for 8–12 GHz X-band phased-array designs requiring integrated RX/TX switching, phase adjustment and attenuation control.
