Wideband FM demodulation by injection-locked division of frequency deviation

A novel and useful wideband FM demodulator operating across an 8 GHz IF bandwidth for application in low-power, wideband heterodyne receivers. The demodulator includes an n-stage ring oscillator that is injection locked to a wideband input signal. Locking to the input frequency, it divides the FM deviation by n, thereby facilitating as well as...

A 56.4-to-63.4 GHz Multi-Rate All-Digital Fractional-N PLL for FMCW Radar Applications in 65 nm CMOS

A mm-wave digital transmitter based on a 60 GHz all-digital phase-locked loop (ADPLL) with wideband frequency modulation (FM) for FMCW radar applications is proposed. The fractional-N ADPLL employs a high-resolution 60 GHz digitally controlled oscillator (DCO) and is capable of multi-rate two-point FM. It achieves a measured rms jitter of 590.2...

High resolution millimeter wave digitally controlled oscillator with reconfigurable distributed metal capacitor passive resonators

A novel and useful millimeter-wave digitally controlled oscillator (DCO) that achieve a tuning range greater than 10% and fine frequency resolution less than 1 MHz. Switched metal capacitors are distributed across a passive resonator for tuning the oscillation frequency. To obtain sub-MHz frequency resolution, tuning step attenuation techniques...

A Wideband 2x13-bit All-Digital I/Q RF-DAC

This paper presents a wideband 2 13-bit in-phase/quadrature-phase (I/Q) RF digital-to-analog converter-based all-digital modulator realized in 65-nm CMOS. The isolation between I and Q paths is guaranteed employing 25% duty-cycle differential quadrature clocks. With a 1.3-V supply and an on-chip power combiner, the digital I/Q transmitter...

A 56–65 GHz Injection-Locked Frequency Tripler With Quadrature Outputs in 90-nm CMOS

17 GHz RF Front-Ends for Low-Power Wireless Sensor Networks

An Assessment of ?-Czochralski, Single-Grain Silicon Thin-Film Transistor Technology for Large-Area, Sensor and 3-D Electronic Integration

A Wideband Millimeter-Wave Power Amplifier With 20 dB Linear Power Gain and +8 dBm Maximum Saturated Output Power

Adaptive multi-standard circuits and systems for wireless communications

Design of multistandard adaptive voltage-controlled oscillators

SiGe radio frequency ICs for low-power portable communication

Adaptivity of voltage-controlled oscillators - theory and design

Principles and Limitations of Ultra-Wideband FM Communications Systems

This paper presents a novel UWB communications system using double FM: a low-modulation index digital FSK followed by a high-modulation index analog FM to create a constant-envelope UWB signal. FDMA techniques at the subcarrier level are exploited to accommodate multiple users. The system is intended for low (110 kbps) and medium (1001000 kbps)...

A 21-26-GHz SiGe bipolar power amplifier MMIC

Integration of a Pulse Generator on Chip Into a Compact Ultrawideband Antenna

For impulse radio ultrawideband communications an “antenna plus generator” system is co-designed and an on chip generator is integrated into the antenna. This approach does away with the need for intermediate transmission lines conventionally placed between an RF device/generator and an antenna and therefore eliminates the need for a balun,...