A plastic packaged Ku-band LNB with very high susceptibility to supply PLL in 0.18um CMOS

Abstract

This paper presents a Ku-band low-noise block that includes very high susceptibility to power supply PLL in a 0.18um CMOS technology. The front-end down-converts the input signal from the Ku-band (10.5∼13GHz) to the IF (∼2.3GHz). The fully integrated LNB is dedicated to both satellite receivers and microwave link products. The VCO that includes full differential varactor shows a very low supply sensitivity (Kpss=−0.18[%/V]) that can eliminates on chip voltage regulator. The LNB performances include 28.2dB gain, −20.5dBm IIP3, 3.4dB NF, and −107dBc/Hz phase noise at 1MHz offset. The front-end consumes 364mW from a 1.8V supply. The core size is about 0.95×2.3 [mm2].