In this paper, a novel fully differential second-generation current conveyor (FDCCII) is presented. The proposed block is useful in mixed-mode applications where fully differential signal processing is required. Furthermore, the FDCCII can be used to realize MOSFET-C filters. The circuit has a bandwidth of about 10 MHz under heavy capacitive loads and can operate from low supply voltages down t...

In heterogeneous wireless network environments, network connections of a device may have a significant differential. This paper studies the effect of path bandwidth differential on the performance of fast retransmission strategies in Multi-homing environments. It identifies that fast retransmission on an alternate path may cause receive buffer blocking when path bandwidth differential is signif...

The Guaranteed Frame Rate (GFR) service is viewed as the most promising ATM service for carrying aggregate TCP/IP traffic over large distances. In this work, we develop an analytical model to assess the performance of TCP over the Differential Fair Buffer Allocation implementation suggested by the ATM Forum. We consider the problem of a single GFR VC fed by multiple TCP Reno sources. The propos...

This paper proposes a new MPEG-4 rate control algorithm for single or multiple object video sequences. The algorithm aims to achieve an accurate bit rate with the maximum picture quality while efficiently handling buffer fullness and scene change. In addition to estimating the bit budget of a frame based on its global coding complexity, the algorithm dynamically distributes the target bits for ...

A high performance and buffer amplifier for liquid crystal display system is presented here. The proposed architecture contains self biased RAIL TO RAIL complementary differential pair , and class B output driving stage which is suitable for large and small size liquid crystal display, compensation capacitor and resistance are used to improve the settling time and slew rate of the buffer amplif...

In this paper a novel high performance all current-mode fully-differential (FD) Current mode Operational Amplifier (COA) in BIPOLAR technology is presented. The unique true current mode simple structure grants the proposed COA the largest yet reported unity gain frequency while providing low voltage low power operation. Benefiting from some novel ideas, it also exhibits high gain, high common m...

In this paper, a systematic design method producing balanced current-mode filters is proposed, using current controlled fully balanced second-generation current conveyor circuit (CFBCCII). In this method, many kind of all-pole multiple loop feedback (MF) current mode balanced filters can be obtained, all the produced filters have fully balance structures. Moreover, the frequency of the filters ...

A new filtering structure of the 2nd-order universal frequency filter is presented. The proposed filter operates in a current-input current-output form and it is designed using signal-flow graphs (SFG) method. Operational transconductance amplifiers (OTAs), current follower (CF) and operational transresistance amplifier (OTRA) are used in the proposal. The filter possesses ability to adjust the...

This paper presents the design of a low-power voltage reference, bias current and the supply voltage for a 9-bit fully differential ADC. The references, power supply circuits and the ADC are integrated in one circuit, i.e. chip. The proposed chip is implemented in the UMC 0.18 μm CMOS process and occupies 800×700 μm. The circuit supply voltage V DD is obtained from the external RF signal. When ...

The paper presents a fully differential log-domain low-pass second order filter. The topology was derived, using a LINELIN transformation, from a standard state-variable biquad. The filter allow for orthogonal parameter tuning. Its low-frequency gain (H0), natural pulsation (ω0) and quality factor (Q) can be tuned continuously by varying only DC bias currents. The filter was implemented in a ge...