Wilkinson Power Dividers/Combiners The in-phase power combiners and dividers are important components of the RF and microwave transmitters when it is necessary to deliver a high level of the output power to antenna, especially in phased-array systems. In this case, it is also required to provide a high degree of isolation between output ports over some frequency range for identical in-phase sig...

This paper presents an electronically tunable current/trans-impedance-mode biquad universal filter employing only single multi-output current controlled current conveyor trans-conductance amplifier (MO-CCCCTA) and two grounded capacitors. The proposed filter realizes all the standard filter functions i.e. low pass (LP), band pass (BP) and high pass (HP), notch and all pass (AP) filters in the c...

Transmitters are used to pass data stream through transmission lines in either current or voltage mode. In high data rate applications, the output impedance of transmitters should match the transmission lines’ characteristic impedance and should be tunable in order to compensate the process, voltage, and temperature variations. The multiplexing technique can be used to extend transmitters signa...

Abstract— A new technique is proposed in this paper in order to design a current source in bipolar technology with very high output resistance while minimising output capacitance. Such techniques are useful in Electrical Impedance Tomography applications. First of all, D.C. relationships are established. Then, an expression based on the analysis of a simplified equivalent circuit, is formulated...

A new high input impedance voltage-mode universal biquadratic filter with three input terminals and five output terminals is presented. The proposed circuit uses three plus-type differential difference current conveyors, two grounded resistors and two grounded capacitors. The proposed circuit can realize all the standard filter functions: lowpass, bandpass, highpass, notch and allpass, without ...

When robots operate in unknown environments small errors in postions can lead to large variations in the contact forces, especially with typical high-impedance designs. This can potentially damage the surroundings and/or the robot. Series elastic actuators (SEAs) are a popular way to reduce the output impedance of a robotic arm to improve control authority over the force exerted on the environm...

This paper presents two Current Differencing Transconductance Amplifiers (CDTA)–based current–mode resistors–less variable frequency third–order Quadrature Oscillators (TOQO). The proposed TOQOs consist of minimum number of active and passive components, especially the first TOQO, only two CDTAs and three capacitors are used in it. The two TOQOs are completely resistor–less, and the capacitors ...

In this paper, the design of linear amplifiers for current sources with very low, or voltage sources with very high impedance is discussed. In designing negative-feedback amplifiers for these sources, the loopgain is often low as a result of the source impedance, thus making it difficult to obtain a sufficiently high bandwidth. Here, it is proposed to use CB or CC stages in front of a negative-...

Bradley A. Minch, Chris Diorio, Paul Hasler, Carver Mead Computation and Neural Systems California Institute of Technology Pasadena, CA 91125 (818) 395-6996 [email protected] ABSTRACT In this paper, we describe a novel circuit consisting of N + 1 MOS transistors and a single oating gate which computes a soft maximumof N current inputs and re ects the result in the output transistor. An in...