Millimeter Wave Digital Arrays Tiles of Unreleased Clocks for Hybrid Electronic Steering (MIDAS TOUCHES)
Abstract
The techniques of beamforming and null-steering using antenna arrays increase the effective radiated energy density at the transmitter, while improving the sensitivity, interference tolerance, spatial selectivity at the receiver through tunable high directivity. Digital Arrays enable efficient simultaneous multiple beams, opening many unique applications. However, digital mm-wave arrays call for (1) per-channel Gbps ADC, (2) full transmit (Tx) and receive (Rx) mm-wave front-ends(FE) per-channel, and (3) need for high-frequency clock at each channel location, each of which makes mm-wave digital arrays prohibitively power hungry. With recent advances in unreleased fin oscillators from Co-PIs lab, we analyzed different topologies of oscillator design using on-chip, high-Q CMOS/MEMS hybrid resonators (resonant fin transistors (RFTs), and resonant body diodes (RBDs)). We analyze the best phase noise performance by aligning the resonances of motional branch and static capacitance compensatory network in the same directions, thereby achieving <-120dBc/Hz phase noise at 10kHz offset (Q of RFT = 10,000) for all the topologies. Among the topologies discussed, design 3 achieves best performance for passive RFT topologies (<-120dBc/Hz phase noise at 10kHz offset, 208dB FOM),while design 6 achieves the best performance for active RFT topologies (<-140dBc/Hz phase noise at 10kHz offset, 220dB FOM).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 08, 2021
- Accession Number
- AD1135658
Entities
People
- Dana Weinstein
- Shreyas Sen
Organizations
- Purdue University