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microwave frequencies

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003235
EISBN: 978-1-62708-199-3
... are as follows: Broadband frequency response of the coupling antennas Efficient coupling through air from the antennas to the material No material contamination problem caused by the coupling Microwaves readily propagate through air, so successive reflections are not obscured by the first one...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006475
EISBN: 978-1-62708-190-0
... Abstract Electromagnetic signals at microwave and millimeter-wave frequencies are well suited for inspecting dielectric materials and composite structures in many critical applications. This article presents a partial list of reported nondestructive testing (NDT) application areas...
Image
Published: 01 January 1986
Fig. 3 Power reflected from a microwave-resonant cavity as a function of frequency. The resonant frequency is ω 0 the full width at half amplitude is Δω. More
Image
Published: 01 December 2008
Fig. 26 Aluminum-SiC microwave radio frequency packaging for communication satellites More
Image
Published: 01 January 2001
Fig. 7 An AlSiC radio frequency microwave packaging used in commercial low-earth orbit communications satellites. Courtesy of General Electric Company More
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001750
EISBN: 978-1-62708-178-8
... at right angles to the main field using a high-frequency microwave-resonant cavity, an electron can be “tipped over” when the precession frequency equals the incident microwave frequency. Electron spin resonance can also be described in terms of quantum mechanics by noting that the quanta of the incident...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001113
EISBN: 978-1-62708-162-7
... describes the in-situ film growth techniques for producing atomic oxygen by radio frequency excitation or microwave discharge or with ozone. electron-beam co-evaporation high-critical-temperature materials in-situ film growth laser ablation low-critical-temperature materials sputtering thin-film...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005736
EISBN: 978-1-62708-171-9
.... Furthermore, at microwave frequencies, the absence of a refractory metal bond layer beneath the copper or gold metallization contributes to reduced device losses. Fig. 3 Array of planar microwave devices and substrate fabricated by air plasma spraying. Waveguide Devices for Microwave Applications...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003658
EISBN: 978-1-62708-182-5
... as microwave corrosion NDE sensors, although open- ended coaxial sensors ( Ref 3 ) and strip-line antennae ( Ref 4 ) have also successfully detected defects under coatings. Open ended rectangular waveguide sensors typically operate in the X- band (8 to 12.5 GHz) or K-band (12.5 to 40 GHz) frequency range...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001751
EISBN: 978-1-62708-178-8
... and magnetostriction; γ is the gyromagnetic ratio, g μ B /ℏ, where g is the spectroscopic splitting factor, μ B is the Bohr magneton, and ℏ = h /2π, where h is Planck's constant; ω = 2π × f (the microwave frequency); and M is the magnetization (assumed uniform). For a parallelepiped ( Fig. 3b ) with H...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001469
EISBN: 978-1-62708-173-3
... technique is that the initial equipment cost is high. Microwave Joining This joining technique depends on the heat produced by microwave-frequency radiation. The parts being joined are held together under a slight pressure of 35 to 70 kPa (5 to 10 psi), and then the interface is irradiated...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003435
EISBN: 978-1-62708-195-5
... Abstract This article discusses the attempts made by the industry to create sensing approaches for modeling a process, part, and chemistry and kinetics. It reviews microwave curing of thick-section composites and the resin cure sensors that are used for resin cure monitoring. These include...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005858
EISBN: 978-1-62708-167-2
... the protection system adopted for the frequency range of 50 Hz to 10 MHz. arc welding electrical field health hazards magnetic field radiation emission An electric field is created as soon as a conductor is energized, while a magnetic field appears only during a passage of an electric current...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001285
EISBN: 978-1-62708-170-2
... dielectrics). In the PECVD process, the gaseous precursors are most commonly subjected to time-varying electric fields of frequencies in the range of 50 kHz to 13.5 MHz. In some designs, microwave frequencies are also used. The electric field initially reacts primarily with the free electrons present...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003021
EISBN: 978-1-62708-200-6
... (vibration, spin, and ultrasonic), and electromagnetic welding (resistance, induction, dielectric, and microwave). It concludes with the evaluation of welds using destructive and nondestructive testing. adhesive bonding adhesives electromagnetic welding friction welding fusion welding mechanical...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003062
EISBN: 978-1-62708-200-6
... applications, but TiO 2 is also being developed as an oxygen sensitive resistive sensor. Other categories of ceramic materials include ferrites and ceramic superconductors. Recent developments in ferrites have been related primarily to their use as recording heads, but research in the area of microwave...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001345
EISBN: 978-1-62708-173-3
... and laser brazing, microwave brazing, and braze welding. braze welding brazing dip brazing electron-beam brazing exothermic brazing filler-metal flow furnace brazing induction brazing infrared brazing laser brazing manual torch brazing microwave brazing resistance brazing surface...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001283
EISBN: 978-1-62708-170-2
... or 113.56 MHz. A typical RF reactor with parallel electrodes is shown in Fig. 2 . Microwave glow discharge is also used at a standard frequency of 2.45 GHz. Fig. 2 Radio-frequency plasma CVD reactor configured for deposition on silicon wafers A recent and promising development...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005757
EISBN: 978-1-62708-171-9
... on. Rating the Risk For an RA to be practical and useful, the identified risks listed in step 1 must be rated. This will help to determine the most serious risks—those that need to be given priority action. An RA number (R) is calculated by multiplying the frequency rating (F), that is, how often...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005869
EISBN: 978-1-62708-167-2
... attractive. High standards of repeatability of the energy input into the part make the process safe and stable. The development of simultaneous dual-frequency (SDF) generators with a high power output in the last 10 years also has led to an increase in the use of induction hardening. Past development...