This paper describes recent technology trend of mixed analog digital RF circuits. With the progress of CMOS technology, largescale digital signal process and control function can be integrated in an RF integrated circuit and some analog signal process blocks can be translated to digital signal processing units. At the same time, the design of remaining analog functional blocks becomes very hard...

A network for the detection of an approaching object with simple-shape recognition is proposed based on lower animal vision. The locust can detect an approaching object through a simple process in the descending contralateral movement detector (DCMD) in the locust brain, by which the approach velocity and direction of the object is determined. The frog can recognize simple shapes through a simp...

Abstract The operational amplifier is an extremely efficient and versatile device. Its applications span the broad electronic industry filling requirements for signal conditioning, special transfer functions, analog instrumentation, analog computation, and special systems design. The analog assets of simplicity and precision characterize circuits utilizing operational amplifiers. In this paper ...

CMOS RF has evolved from a novelty to a necessity with the mergence of all analog and digital functionality into a single chip for standards such as Bluetooth and WLAN/802.11. The stringent performance requirements associated with cellular standards such as GSM, however, has either limited the level of RF transceiver integration, or compelled the use of alternative technologies such as BiCMOS o...

This report advances the need to develop creatively new design strategies for low voltage, low power, high performance, integrated circuits. Attention is focused on analog cells, which are particularly vulnerable to process vagaries and the accentuated performance sensitivities to critical modeling parameters spawned by low voltage operation. Device operation in triode and weak inversion regime...

An angledetector with a digital output is described. The component is ment as an alternative to the traditional slide potentiometer used as volume control in many hearing aid applications. The component is based on the use of magnetic sensitive MOSFET’s (MAGFET’s) detecting the position of a tiny bar magnet placed above a silicon chip. Because of the galvanic separation between the anglesetting...

The current mirror is one of the necessary parts in CMOS (Complementary Metal Oxide Semiconductor) analog circuit design. The current mirror can be used as an active element and as a biasing circuit. The circuit structures are supposed to be compatible with low-voltage operating environments to avoid the decrement in system performance caused by the low-voltage low-power designs including reduc...

We present in this paper an overview of circuit techniques dedicated to design reliable low-voltage (1-V and below) analog functions in deep submicron standard CMOS processes. The challenges of designing such low-voltage and reliable analog building blocks are addressed both at circuit and physical layout levels. State-ofthe-art circuit topologies and techniques (input level shifting, bulk and ...