Conference Paper

A 120μW MICS/ISM-band FSK receiver with a 44μW low-power mode based on injection-locking and 9x frequency multiplication

DOI: 10.1109/ISSCC.2011.5746397 Conference: Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International
Source: IEEE Xplore

ABSTRACT For true low-power peer-to-peer wireless links for sensing, link symmetry must be maintained unlike in [1,2] where the burden is shifted to the receiver. In addition, the transceiver power dissipation and performance should be adaptive to save power when the link distance is short. We present a 120μW MICS/ISM band receiver with -90dBm sensitivity at a data-rate of 200kb/s with BER<;0.1%. The receiver incorporates a 44μW low-power (LP) mode that achieves -70dBm sensitivity at 200kb/s and 0.1% BER. At a lower data-rate of 20kb/s, the LP mode can be used as a wake-up receiver with increased sensitivity of -75dBm with 1 % BER and 38μW power consumption.

0 Bookmarks
 · 
63 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: A low power wide locking range divide-by-4 injection-locked frequency divider (ILFD) is proposed in the letter and was implemented in the TSMC 0.18 μm SiGe BiCMOS process. The divide-by-4 ILFD uses a cross-coupled voltage-controlled oscillator with an active inductor and a three-transistor composite consisted of two nMOSFETs and one pMOSFET to serve as an injection device with the function of linear and nonlinear mixers. At the supply voltage of 1.5 V and at the incident power of 0 dBm, the operation range of the divide-by-4 is 2.3 GHz, from the incident frequency 14.5 to 16.8 GHz, the percentage is 14.7%. The locking range of the divide-by-4 is 1.7 GHz, from the incident frequency from 14.6 to 16.3 GHz, the percentage is 11%. The core power consumption is 1.5 mW. The die area is 0.465 × 0.317 mm2. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2825–2828, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27204
    Microwave and Optical Technology Letters 12/2012; 54(12). · 0.59 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: An ultra‐low‐power low‐voltage 401–406 MHz Medical Device Radiocommunications Service (MedRadio) receiver for continuous wireless communication in biomedical applications is demonstrated using 0.18‐μm CMOS technology. Although using a low‐IF architecture, careful consideration is done for individual block‐level circuit design to minimize the overall power consumption. The receiver chain consists of a complementary current‐reuse LNA, an in‐phase/quadrature folded mixer, an eighth‐order complex bandpass filter, a limiting amplifier chain with RSSI, and a frequency synthesizer with a quadrature VCO. The proposed receiver achieves a gain of over 80 dB, noise figure of 14 dB, image rejection of 32 dB, and phase noise of −106 dBc/Hz at 100 kHz offset while consuming less than 1.2 mW from a 1‐V supply voltage with 1.8 mm2 of core die area. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2821–2825, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27205
    Microwave and Optical Technology Letters 12/2012; 54(12). · 0.62 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: A wireless wake-up receiver for lithium-ion battery systems was developed and evaluated. A 2-stage power-supply control scheme is added to the wake-up receiver for supporting low power, high receiving sensitivity, and short wake-up time simultaneously. When the battery system is in power-down mode, only a voltage detector in the wake-up receiver consumes a current while waiting for a wireless wake-up signal with low current and high receiving sensitivity. When the voltage detector detects the wake-up signal, all circuits in the wake-up receiver operate for detecting the wake-up signal with a short wake-up time. The wake-up receiver consumes only 0.3 μA of the power-down current for -32 dBm of the receiving sensitivity with 11 ms of the wake-up time.
    2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014; 03/2014