This paper presents the design, manufacturing, and characterization of a wide-band cavity-backed aperture-coupled patch antenna 16-element array on multilayer printed circuit board (PCB) targeted for D-band applications. Microstrip line grounded coplanar waveguide (GCPW) transmission lines are also designed tested to investigate losses at D-band. The test structures manufactured using technology with semi-additive processing (mSAP) conductors multilayered substrate. measurement results...

Despite the great promise of printed flexible electronics from 2D crystals, and especially graphene, few scalable applications have been reported so far that can be termed roll‐to‐roll compatible. Here we combine screen graphene with photonic annealing to realize radio‐frequency identification devices a reading range up 4 meters. Most notably our approach leads fatigue resistant showing less than 1% deterioration electrical properties after 1000 bending cycles. The resistance demonstrated on...

A 16-element 140–160-GHz phased array transceiver is reported. The chipset fabricated using STMicroelectronics' 55-nm SiGe BiCMOS process. Five different chips are implemented: a 4-channel transmitter with maximum gain per channel of 15 dB and 0-dBm saturated output power; receiver 8 dB, −10.4-dBm input 1-dB compression point (IP1 dB), minimum noise figure (NF) 15.6 channel; 0–1-GHz to I/Q up-converter integrated frequency doubler, exhibiting −13.5-dB conversion (CG) −6-dBm 70–80-GHz local...

This paper describes the design principles of electrostatically actuated microelectromechanical capacitors. Key properties, such as capacitance tuning range, quality factor (Q), different control methods, thermal stability, effect radio frequency signal on and gas damping are examined. Experimental devices were designed fabricated using principles. The two-gap capacitor has a measured nominal 1.58 pF achieves range 2.25:1 with parasitics. When all parasitic capacitances to substrate...

We demonstrate a fabrication method for high-performance field-effect transistors (FETs) based on dry-processed random single-walled carbon nanotube networks (CNTNs) deposited at room temperature. This is an advantageous alternative to solution-processed and direct CVD grown CNTN FETs, which allows using various substrate materials, including heat-intolerant plastic substrates, enables efficient, density-controlled, scalable deposition of as-produced CNTNs the directly from aerosol (floating...

This letter presents the design, manufacturing, and operational performance of a graphene-flakes-based screen-printed wideband elliptical dipole antenna operating from 2 up to 5 GHz for low-cost wireless communications applications. To investigate radio frequency (RF) conductivity printed graphene, coplanar waveguide (CPW) test structure was designed, fabricated, tested in range 1 20 GHz. Antenna CPW were on Kapton substrates using graphene paste formulated with graphene-to-binder ratio 1:2....

As a method of producing RFID tags, printed graphene provides low-cost and eco-friendly alternative to the etching aluminum or copper. The high resistivity graphene, however, sets challenge for antenna design. In practice, it has led using very large antennas in UHF far field tags demonstrated before. Using inductive near as coupling between reader tag is an radiating also at UHF. read range such short, but, on other hand, extremely simple small. this paper, transponders with screen-printed...

The mobile data traffic increase and the future connection of billions Internet Things (IoT) devices require operators to reshape existing transport network architecture. Today, more than 50 % Base-stations (BTS) are backhauled via radio. Radio technology can continue play this vital role in networks if it is able evolve cope with new capacity level latency requirements supporting 5G services. In paper, a possible answer demand provided, proposing radio solution working D-Band (130-170 GHz)...

This paper presents a novel temperature-compensated two-state microelectromechanical (MEM) capacitor. The principle to minimize temperature dependence is based on geometrical compensation and can be extended other devices such as MEM varactors. structure eliminates the effect of intrinsic thermal stress device operation. leads temperature-stable without compromising quality factor (Q) or voltage behavior. increases robustness devices, but does not require any modifications process....

This paper reviews the expected wide and profound impact of nanotechnology for future wireless devices communication technologies.

This paper presents a study of the D-band radio solutions, with beam-steering functionality, intended for use in reconfigurable meshed network. The regulation and network constraints defining specifications D-Band transceiver are reviewed. architecture link is proposed key enabling technologies needed to build presented. solutions can be used plenty different connections, since they provide capacity level up 100 Gbps over 160 meter and, at reduced capacity, hop lengths exceeding 1 km.

A novel non-lithographic technique for the fabrication of carbon nanotube thin film transistors is presented. The whole transistor process requires only one mask which used both to pattern channels based on aerosol synthesized nanotubes and deposit electrodes by metal evaporation at different angles. An important effect electrodynamic focusing was utilized directed assembly with feature sizes smaller than openings. This dry method opens up new avenues device especially low cost flexible...

Ultra-thin (2-5 nm thick) aluminum oxide layers were grown on non-functionalized individual single walled carbon nanotubes (SWCNT) and their bundles by atomic layer deposition (ALD) technique in order to investigate the mechanism of coating process. Transmission electron microscopy (TEM) was used examine uniformity conformality coatings at different temperatures (80 degrees C or 220 C) with precursors for oxidation (water ozone). We found that SWCNTs coated continuously, but same time, bare...

This paper reports on the modeling and fabrication of a truly three-dimensional high-quality-factor toroidal inductor using polymer replication processes. The critical dimensions are in micrometer range, applied manufacturing method is based replication. Electrical measurements show that with an inductance 6.0 nH exhibits peak quality factor 50 at frequency 3 GHz. Model verified by measurement results shows further improvement still possible. Furthermore, technique can be extended to become...

While 5G wireless network is being currently deployed around the world, preliminary research activity has begun to look beyond and conceptualize 6G standard. Although it envisioned that may bring an unprecedented transformation of network, in comparison with previous generations, from analog RF point view need address new frequency spectrum increase achievable data rate its implication on development differentiated More-than-Moore silicon technologies will remain. This paper reviews...

This paper presents the MIMOSA architecture and development platform to create Ambient Intelligence applications. achieves this objective by developing a personal mobile-device centric open technology where microsystem is key enabling for their realization due its low-cost, low power consumption, small size. focuses demonstration activities carried out in field of health care. project European level initiative involving 15 enterprises research institutions universities.

Single-walled carbon nanotube network field effect transistors were fabricated and studied as humidity sensors. Sensing responses altered by changing the gate voltage. At open channel state (negative voltage), pulse resulted in decrease of source-drain current, and, vice versa , increase current was observed at positive This explained electron-donating nature water molecules. The operation speed signal intensity found to be dependent on voltage polarity. or negative change with zero-gate...

A compact model for a capacitive RF MEM switch with damping is presented. The based on analytic expressions flow resistances due to the rarefied air in gap and perforation holes. complete constructed of elements resulting from discretization beam deflection equation has been implemented as nonlinear electrical equivalent circuit. reproduces displacement accurately. Comparison measured transient on/off capacitance characteristics shows very good agreement.

Abstract We present a novel dry and room‐temperature method for the deposition of random carbon nanotube networks (CNTNs) onto various substrates. This is based on natural charging (CNT) bundles in gas‐phase their efficient directly downstream synthesis reactor by means an electric field. The density deposited CNTNs was controllably adjusted varying time field strength. Application this technique fabrication single‐walled CNTNbased field‐effect transistors (FETs), where CNTN serves as...

The paper presents the characterization of interconnects for D-band on multilayer high frequency PCBs. losses demonstrated at 150 GHz a microstrip line, coplanar waveguide and single flip-chip transition are 1.9 dB/cm, 1.8 dB/cm 0.3 dB (for 60 μm bumps), respectively. applicability PCB technology as low cost integration platform is proven.