With 1.8-GHz carrier open-loop VCO phase noise of -144.5 dBc/Hz at a 1-MHz offset, the LMX2582 is one of the first PLLs with an integrated VCO to meet the multicarrier wireless GSM communication ...

And, of course, if it’s desirable to have more suppression of VCO phase noise, the loop bandwidth can be made wider to accomplish this with an attendant increase in reference and floor noise. A ...

The ADF4371 synthesizer from Analog Devices offers a wide continuous RF output range of 62 MHz to 32 GHz and an ultra-low normalized phase noise floor (FOM) of -234 dBc/Hz. Consisting of a PLL with ...

The performance is achieved by the ADF4377 synthesizer delivering jitter levels below 18fs rms as a consequence of the low normalised in-band phase noise at -239dBc/Hz, -147dBc/Hz normalised 1/f noise ...

Analog Devices is aiming at basestations with a phased-locked loop (PLL) synthesiser with integrated voltage-controlled oscillator (VCO). Called ADF4355, typical phase noise is -144dBc/Hz (1MHz offset ...

Texas Instruments has introduced a wideband frequency synthesizer with integrated voltage-controlled oscillator (VCO) that delivers the industry’s lowest phase noise. Key specification and features: ...

Low-phase-noise microwave oscillators are important to a wide range of subjects, including communications, radar and metrology. Photonic-based microwave-wave sources now provide record, close-to ...

Figure 5. Integer-N, ADF4106 with VCO-1901846T. Figure 6. Fractional-N, ADF4153A with VCO-1901846T. The ability to increase PFD frequency and frequency resolution was accompanied by improvements to ...

Last session, we use the cheap and cheerful 4046 Phase-locked Loop chip as a simple voltage-controlled oscillator (VCO). It was dead simple, in fact, because the chip has a VCO already built in. Th… ...