Q-enhanced LC filter technology offers an alternative to the use of direct conversion techniques for implementing fully integrated receivers. Design and performance issues for QE LC filters are discussed and a fully integrated 850-MHz, two-pole, bandpass filter with an 18-MHz 3-dB bandwidth is reported. The prototype design is implemented in a standard 0.8m CMOS process and achieves a rejection...

A highly linear Low Noise Amplifier (LNA) using a flexible feedforward linearisation scheme is described. The wideband LNA is designed for use in the frequency spectrum between 1 and 2GHz. It has a tuneable linearity profile which allows it to be adjusted for wideband moderate linearity or narrowband high linearity. The linearity can be tuned so a wideband Third Order Intercept Point (IP3) impr...

In this work 0.18 μm CMOS is used to achieve low-characteristics and best performance of in the band of 2.4 GHz to 6.0 GHz. Here simulation tool is used for simulation of lumped components with an inductor less concept. Designed broadband LNA supports multi standard wireless applications with High gain and low noise figure. Due to the accurate calculation and the proper impedance matching, the ...

A new architecture is presented for a single-chip tuner for digital terrestrial television, based on existing double conversion and direct conversion topologies. The new design forms part of a mixed-signal Digital Video Broadcasting–Terrestrial (DVB-T) receiver system, employing digital signal processing at baseband to ensure minimal performance requirements for the analog circuitry. To evaluat...

Simulation results of a 863-870-MHz frequency-hopped spread-spectrum transceiver with binary frequency shift keying (BFSK) modulation at 20 kb/s for wireless sensor applications is presented. The various blocks parameters of the transmit/receive RF front end like noise figure (NF), gain, 1 dB compression point (P-1dB), and IIP3 are simulated and optimized to meet transceiver specifications. The...

A systematic system-level design methodology for multiband–multistandard (MB–MS) wideband/reconfigurable CMOS receivers is presented. The methodology determines the specifications (noise figure (NF) and linearity) for each building block to minimize the overall power consumption. System-level simulations show that the gain variation of the LNA for various bands/standards is an important factor ...

Visually guided action implies the existence of information as well as a control law relating that information to movement. For ball catching, the Chapman Strategy--keeping constant the rate of change of the tangent of the elevation angle (d(tan(alpha))/dt)--leads a catcher to the right location at the right time to intercept a fly ball. Previous studies showed the ability to detect the informa...

Prevailing views on how we time the interception of a moving object assume that the visual inputs are informationally sufficient to estimate the time-to-contact from the object's kinematics. Here we present evidence in favor of a different view: the brain makes the best estimate about target motion based on measured kinematics and an a priori guess about the causes of motion. According to this ...

This paper presents a passive mixer combined with a 1st-order active low-pass filter implemented in a purely digital low-power 65 nm CMOS technology. The filter consists of a four-stage operational amplifier with two feed-forward paths for a 3 dB corner frequency of 4 MHz. The mixer offers a very low flicker noise corner frequency of 80 Hz for DVB-H application. A fabricated test chip with inte...

A dual-mode Bluetooth/ZigBee low-IF polyphase channel filter has been designed with 0.18 μm digital CMOS technology based upon transconductorcapacitor (GmC) structure. The filter has a fifthorder 0.5dB equiripple Chebyshev bandpass response. It achieves a signal-to-noise ratio of 62dB and input referred third-order intermodulation intercept of 33dBVp (for distant blocker interference). The filt...