Radio Frequency Integrated Circuit Design

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• ŞAHRAM MİNAYİ

A CDTA-based quadrature oscillator circuit is proposed. The circuit employs two current-mode allpass sections in a loop, and provides high-frequency sinusoidal oscillations in quadrature at high impedance output terminals of the CDTAs. The circuit has no floating capacitors, which is advantageous from the integrated c…

• ALİ ÜMİT KESKİN

No abstract yet.

• ALİ ÜMİT KESKİN

This article presents a low-cost and area-efficient 28-GHz CMOS phased-array beamformer chip for 5G millimeter-wave dual-polarized multiple-in-multiple-out (MIMO) (DP-MIMO) systems. A neutralized bi-directional technique is introduced in this work to reduce the chip area significantly. With the proposed technique, com…

A new configuration realizing first-order canonical current processing all-pass filters based on current differencing buffered amplifier, a recently introduced active element, is proposed. Using this configuration, two types of first-order current-mode all-pass filters are derived. They employ only a single active ele…

• İSMAİL SERDAR ÖZOĞUZ

A new configuration realizing first-order canonical current processing all-pass filters based on current differencing buffered amplifier, a recently introduced active element, is proposed. Using this configuration, two types of first-order current-mode all-pass filters are derived. They employ only a single active ele…

• MEHMET OĞUZHAN ÇİÇEKOĞLU

Phase noise and timing jitter in oscillators and phase-locked loops (PLLs) are of major concern in wireless and optical communications. In this paper, a unified analysis of the relationships between time-domain jitter and various spectral characterizations of phase noise is first presented. Several notions of phase no…

• ALPER DEMİR

In this paper, using a minimum number of passive components, i.e., new grounded and floating inductance simulators, grounded capacitance multipliers, and frequency-dependent negative resistors (FDNRs) based on one/two modified current-feedback operational amplifiers (MCFOAs), are proposed. The type of the simulators d…

• ERKAN YÜCE

The main effort in oscillator phase noise calculation and macromodeling lies in computing a vector function called the perturbation projection vector (PPV). Current techniques for PPV calculation use time-domain numerics to generate the system's monodromy matrix, followed by full or partial eigenanalysis. We present s…

• ALPER DEMİR

We report on the design and demonstration of polarization-engineered GaN/InGaN/GaN tunnel junction diodes with high current density and low tunneling turn-on voltage. Wentzel–Kramers–Brillouin calculations were used to model and design tunnel junctions with narrow band gap InGaN-based barrier layers. N-polar p-GaN/In0…

• FATİH AKYOL

No abstract yet.

• ERKAN YÜCE

This paper presents an ultra-wideband millimeter-wave (mm-wave) wireless transceiver (TRX) achieving 120Gb/s data-rate, which is the highest rate among the state-of-the-art mm-wave transceivers [1-4]. The data-rate of 120Gb/s is realized by two 15GBaud data streams in 16-QAM modulation (2×15×4b/symbol=120Gb/s). The to…