ISSCC 2004 / SESSION 21 / RF POTPOURRI / 21 . 2 21 . 2 A Circular Standing Wave Oscillator
نویسندگان
چکیده
This paper introduces a new class of oscillators that generate sinusoidal signals by formation of a circular standing wave on a ring (closed-loop) transmission line (t-line). A basic form of the circular standing wave oscillator (CSWO), schematically illustrated at the top left of Fig. 21.2.1, consists of a ring t-line and two pairs of cross-coupled inverters located at two opposite ports on the ring. The ring t-line provides a frequency selection mechanism while the cross-coupled inverters compensate loss in the ring.
منابع مشابه
ISSCC 2004 / SESSION 21 / 21 . 1 21 . 1 Circular - Geometry Oscillators
Demand for faster data rates in wireline and wireless markets has resulted in tighter jitter and phase noise requirements for oscillators. Although active device noise (and not the resonator noise) dominates the phase noise of most CMOS oscillators [1], in a properly designed oscillator, the quality factor, Q, of the resonant tank indirectly plays a central role in the phase noise. The best pha...
متن کاملISSCC 2005 / SESSION 21 / TD : RF TRENDS : ABOVE - IC INTEGRATION AND MM - WAVE / 21 . 8 21 . 8 A 114 GHz VCO in 0 . 13 μ m CMOS Technology
Millimeter wave (MMW) VCO design is motivated by the need for the ever-increasing frequency and bandwidth of communication applications. Most previously reported W-band (75 to 110GHz) and D-band (110 to 170GHz) VCOs are realized in InP HEMT or HBT technology [1-3] due to excellent transistor performances. Recently, some millimeter-wave Si-based VCOs were reported with high power consumption [5-...
متن کاملIsscc 2010 / Session 2 / Mm-wave Beamforming & Rf Building Blocks / 2.8 2.8 a 9.2µa Gen 2 Compatible Uhf Rfid Sensing Tag with -12dbm Sensitivity and 1.25µv Rms Input- Referred Noise Floor
Passive RFID technology enables battery-free wearable and implantable sensors with an unlimited lifespan, small size, and sub-gram weight. These properties facilitate advanced biomedical research (such as untethered monitoring of freely-behaving insects and small animals) and unobtrusive human health monitoring. Passive sensor tags reported to date have employed simple ring oscillator temperatu...
متن کاملISSCC 2007 / SESSION 17 / ANALOG TECHNIQUES AND PLLs / 17 . 2 17 . 2 A 0 . 65 V 2 . 5 GHz Fractional - N Frequency
For extremely-scaled CMOS technologies, supply voltages well below 1V will be required to maintain reliability [1]. Analog and RF design with standard devices then becomes very challenging because of the significant reduction in both the available signal swing and the available overdrive for biasing. We present ultralow-voltage design techniques that maintain all node voltages between the suppl...
متن کاملA 2.4 GHz 3.6mW 0.35mm2 Quadrature Front-End RX for ZigBee and WPAN Applications
a cheaper design. Since an LC-oscillator topology is mandatory to achieve a minimal current draw, the reduction of the number of coils has to be done in the LNA, the mixer and the quadrature generator. In this work, starting from the LNA-Mixer and VCO (LMV) cell topology [2], a single-coil low-power receiver shares the bias current among all the RF blocks of the analog front-end. The receiver p...
متن کامل