An on-chip resonator is designed and fabricated using a standard 0.13-μm SiGe technology for millimeter-wave applications. The based on unique structure, which consists of two broadside-coupled meander lines with opposite orientation. equivalent LC circuit the given, while impact structure resonance frequencies investigated. Using this along capacitors, compact bandpass filter (BPF) also fabricated. measured results show that can generate at 57 GHz attenuation better than 13.7 dB, BPF has...

A compact balanced frequency doubler with more than 35 dB odd-harmonic rejection and fractional bandwidth of 73% is presented in this letter. Wide high suppression achieved by adopting a new technique for the transformer balun design, resulting very low magnitude imbalance 0.13 phase 0.4° over 7-15 GHz. The performance improved offsetting radius primary secondary coils, which reduces parasitic coupling capacitance. input output ranges are GHz 14-30 respectively. circuit was fabricated...

Abstract This work analyses the comparative effects of period-four transition metal (TM) dopants for CO molecular adsorption on monolayer Graphene (Gr) supercell using density functional theory (DFT) based ab initio method first time. Ten different TM dopant species (Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn) have been incorporated and extensively studied in context Carbon Monoxide (CO) adsorption. The study elaborates metallic doping Gr structural stability, electronic properties, strength,...

An edge-coupled meandered three-coupled-line Marchand balun with a partial ground plane implemented in 0.13 μm SiGe Bi-CMOS technology is presented this brief. The balance performance of the designed significantly improved by creating `no plane' beneath coupledline structure, which demonstrated simulating two baluns: one and other solid underneath. measured amplitude phase imbalances are less than 0.4 dB 2.5°, across 3-dB bandwidth from 21.5 to 95 GHz, surpassing previously reported results...

In this work, a systematic design method for compact 5-pole Butterworth transverse resonance low pass filter (TR-LPF), in 0.15 μm Gallium Arsenide process, with wide rejection bandwidth (RBW), is presented. The circuit model of TR-LPF and closed-form expressions are provided to appreciate the process. fabricated has cut-off frequency 10.5 GHz, an insertion loss 0.4 dB, return better than 20 dB. 30 40 dB deep bandwidths (RBWs), across 50 45.5 17 GHz respectively, obtained. novel use stubs...

Analysis and measurement validation of Marchand Transformer baluns is presented in this brief that compares key performance metrics including amplitude phase balance, circuit size, bandwidth impedance match. Whilst novel variants these circuits have been published the open literature to improve their by direct compensation, there yet remains a fundamental comparison core coupled-line structures reveal systematic design procedure for baluns. Simple analytical equations are derived both deep...

A transformer-coupled frequency quadrupler with 50% bandwidth is designed in a 0.25μm SiGe process. The covers an output range from 36GHz to 60 GHz total power consumption of 38.5mW for supply voltage 2.5V. To fulfil the requirement harmonic suppression, novel on-chip asymmetrical Marchand balun structure adopted compensate phase and amplitude errors across wide bandwidth, so that 3 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rd</sup> - 5...

An ultra-compact integrated resonator and bandpass filters (BPF), in silicon-based technology, are presented for millimetre-wave applications. The consists of two broadside-coupled lines opposite orientations. Using this resonator, a first-order second-order BPFs were also designed. To prove the concept, three prototypes each BPF fabricated using standard 0.13-μm SiGe process. measured results show that has an attenuation 13.7 dB at resonance frequency 57 GHz, while centre 31 GHz insertion...

Characterization of a wide-band transformer balun with low magnitude and phase imbalance is presented in this paper. Excellent balance over large bandwidth achieved by adopting two new techniques for the design, resulting very 0.12 dB less than 1° 30 to 60 GHz. The tradeoff between insertion loss investigated. First, appropriate width primary secondary coils selected reasonable loss. Secondly, radii were offset reduce parasitic coupling capacitance, thereby improving differential signal....

A 3D printed dual-ridged horn antenna (DRHA) is presented.The design optimized for additive manufacturing and using acrylonitrile butadiene styrene (ABS) then painted with nickel based aerosol spray.The coaxial transition also included in the prototype.The was manufactured intention of improving learning education electromagnetism antennas undergraduate students a low-cost personal desktop printer.The DRHA has 10 dB return-loss bandwidth 6621 MHz (1905 MHz-8526 MHz) peak gain 11 dBi.This...

A self-biased balanced frequency doubler is presented in gallium arsenide (GaAs) with more than 38 dB fundamental suppression and broad bandwidth from 22 to 40 GHz at its output. The combination of both large excellent harmonic rejection was achieved by applying a transformer balun high degree symmetry minimal capacitive coupling. alone has gain phase imbalance less 0.3 0.7° respectively 2 25 GHz. conversion the -2 -5 across output range. highest power approximately 8 dBm between 18 20 GHz,...

This work reports three designs of transverse resonance (TR)-based high-performance compact 5-pole Butterworth low-pass filters (TR-LPFs) at the cut-off frequency ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$f_{c}$ </tex-math></inline-formula> ) 10.5 GHz in notation="LaTeX">$0.15~\mu \text{m}$ Gallium Arsenide (GaAs) pHEMT technology, with a chip size 0.82 mm notation="LaTeX">$\times0.87$ mm. Two...

ABSTRACT Conventional and additive manufacturing (three‐dimensional [3D] printing) techniques for a dual‐ridged horn antenna (DRHA) are presented. The different aspects of the conventional DRHA limitations incurred during discussed in detail. design was further optimized fused deposition modeling 3D printed using acrylonitrile butadiene styrene (ABS). polymer‐based print painted with nickel‐based aerosol spray. coaxial transition is also included prototype. manufactured intention improving...

A folded edge-coupled transformer balun is presented with excellent balance and 3-dB bandwidth from 9 to 20 GHz. Three structures were simulated; straight, folded, spiralled; study the trade-off between circuit size performance. simplified lumped equivalent model of also shown. The was implemented two-port characterization accurately measure balance. measured magnitude phase imbalances are less than 0.3 dB 0.7° 2 25 GHz, surpassing previously reported results for GaAs baluns. fabricated in a...

A self-biased balanced frequency doubler is presented in gallium arsenide (GaAs) with more than 38 dB fundamental suppression and broad bandwidth from 22 to 40 GHz at its output. The combination of both large excellent harmonic rejection was achieved by applying a transformer balun high degree symmetry minimal capacitive coupling. alone has gain phase imbalance less 0.3 0.7° respectively 2 25 GHz. conversion the -2 -5 across output range. highest power approximately 8 dBm between 18 20 GHz,...

A 3D printed dual ridged horn antenna (DRHA) is presented. The design optimized for additive manufacturing and using acrylonitrile butadiene styrene (ABS) then painted with nickel based aerosol spray. coaxial transition also included in the prototype. was manufactured intention of improving learning education electromagnetism antennas undergraduate students a low cost personal desktop printer. DRHA has 10 dB return-loss bandwidth 6621 MHz (1905 MHz-8526 MHz) peak gain 11 dBi. This prototype...