A super-regenerative ASK receiver with ΔΣ pulse-width digitizer and SAR-based fast frequency calibration for MICS applications

Author

Liu, Yao-Hong ; Liu, Hui-Hsien ; Lin, Tsung-Hsien

Author_Institution

Graduate Institute of Electronics Engineering and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan

fYear

2009

fDate

16-18 June 2009

Firstpage

38

Lastpage

39

Abstract

This paper presents a 400MHz super-regenerative receiver (SR-RX) with a proposed ΔΣpulse-width digitizer (ΔΣ-PWD) and a SAR-based fast frequency calibration (SAR-FFC). The ΔΣ-PWD can be considered as a PW-domain counterpart of a conventional ΔΣ modulator. It achieves high-resolution PW-to-digital conversion. The SAR-FFC enables rapid setting of the oscillator frequency to the MICS band. Fabricated in a 0.18µm CMOS process, this RX draws 700µA from a 1.3V supply. With a 156kbps data rate, the RX achieves an energy efficiency of 5.8nJ/bit and −80dBm sensitivity. The measured frequency calibration time is around 1.5µs.

Keywords

Amplitude shift keying; Calibration; Clocks; Energy efficiency; Envelope detectors; Frequency; Jitter; Microwave integrated circuits; Oscillators; Space vector pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits, 2009 Symposium on

Conference_Location

Kyoto, Japan

Print_ISBN

978-1-4244-3307-0

Electronic_ISBN

978-4-86348-001-8

Type

conf

Filename

5205294