scholarly journals Low‐loss and ultra‐wide passband highpass filter using suspended integrated strip‐line technology

2019 ◽  
Vol 55 (14) ◽  
pp. 803-805 ◽  
Author(s):  
J.W. McDaniel ◽  
H.H. Sigmarsson
Keyword(s):  
Strip Line ◽  
Low Loss ◽  
Highpass Filter ◽  
Line Technology

scholarly journals A Low-Loss Fully Board-Integrated Low-Pass Filter Using Suspended Integrated Strip-Line Technology

2018 ◽  
Vol 8 (11) ◽  
pp. 1948-1955 ◽  
Author(s):  
Jay W. McDaniel ◽  
Shahrokh Saeedi ◽  
Mark B. Yeary ◽  
Hjalti H. Sigmarsson
Keyword(s):  
Strip Line ◽  
Low Loss ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Line Technology

Ultra-Low Dielectric Permitfivity Ceramics and Composites for Packaging Applications

1986 ◽  
Vol 72 ◽  
Author(s):  
L. E. Cross ◽  
T. R. Gururaja
Keyword(s):  
High Speed ◽  
Sol Gel ◽  
Strip Line ◽  
Low Loss ◽  
Silica Films ◽  
Microwave Frequencies ◽  
Low Dielectric ◽  
Ceramic Insulators ◽  
Interconnect Systems ◽  
Low Permittivity

AbstractTo accomplish the interconnect systems which will be required in the next generation of very high speed Ga:As digital ICs, it will be necessary to use strip line techniques for signal traces which must be deposited over very low permittivity dielectric substration. Materials with relative dielectric permittivities k 〈 3.0 and very low loss tangent up to microwave frequencies will be required. For ceramic systems such values are impossible to achieve in single phase monoliths, and composite approaches are required. Techniques for processing ceramic insulators which permit the introduction of controlled pore structures are discussed. The introduction of pores degrades some other desirable properties of the ceramic such as mechanical strength and thermal conductivity so that control of both scale and location of pores is desirable.Materials investigated include sol-gel processed silica films and monoliths, reactively sputtered silica, etched glass compositions and Macro-Defect-Free (MDF) cements.

scholarly journals Design of a Wideband Surface Mountable Suspended Integrated Strip-Line Technology

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 188825-188832
Author(s):  
Christopher J. Walker ◽  
Hjalti H. Sigmarsson ◽  
Jay W. McDaniel
Keyword(s):  
Strip Line ◽  
Line Technology

scholarly journals Process Evaluation of DuPont™ GreenTape™ 9k7 LTCC

2011 ◽  
Vol 2011 (CICMT) ◽  
pp. 000302-000305
Author(s):  
Steve Dai ◽  
Adrian Casias
Keyword(s):  
High Frequency ◽  
Sintering Temperature ◽  
Full Density ◽  
Strip Line ◽  
Ramp Rate ◽  
Low Loss ◽  
The Impact ◽  
Critical Process ◽  
Binder Burnout ◽  
Glass Viscosity

GreenTape™ 9K7 low temperature cofired ceramic (LTCC) is a low loss glass ceramic dielectric tape for high frequency applications. The low loss is mainly achieved via glass-derived and glass-reacted crystallizations that occur during the sintering stage. This paper reports on the impact of one critical process parameter, the ramp rate from the binder burnout to the sintering temperature (530 – 850°C), which affects the shrinkage behavior, dielectric properties and strip line (SL) resonator characteristics of 9K7. At slow ramp rates crystallization occurs before densification, increasing glass viscosity, and thus inhibiting 9k7 from reaching full density. The sintering of 9k7 can be optimized using ramp rates that allow densification prior to crystallization.

Arbitrary Waveform Generator Based on GaAs FET and Tapered Micro-Strip Line

2013 ◽  
Vol 655-657 ◽  
pp. 1581-1586
Author(s):  
Ping Lin ◽  
Bai Yu Liu ◽  
Yong Sheng Gou ◽  
Yong Lin Bai ◽  
Bo Wang ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electrical Pulse ◽  
Strip Line ◽  
Waveform Generator ◽  
Arbitrary Waveform Generator ◽  
Good Ability ◽  
Confinement Fusion ◽  
Effect Transistor ◽  
Arbitrary Waveform ◽  
Line Technology

In order to improve the output power of laser pulse in the inertia confinement fusion experiment, an arbitrary waveform generator is fabricated to shape the laser pulse. The arbitrary waveform generator is based on the impedance tapered micro-strip line technology and GaAs Field Effect Transistor set which has a good ability of generating voltage-controlled current. With the impedance tapered micro-strip line technology, the arbitrary waveform generator generates shaping electrical pulse with duration less than 10 ns, 330 ps time-domain adjustment. We use the shaping electrical pulse to modulate semiconductor laser which has the characteristic of direct modulate, the experiment results show the shaped laser pulse is obtained based on the shaping electrical pulse.

Low-Loss Images in a Stem/Tem Microscope

1976 ◽  
Vol 34 ◽  
pp. 496-497 ◽  
Author(s):  
David C. Joy ◽  
Dennis M. Maher
Keyword(s):  
High Resolution ◽  
Surface Topography ◽  
Beam Direction ◽  
Low Loss ◽  
Specimen Holder ◽  
Glancing Angle ◽  
High Resolution Images ◽  
Set Up ◽  
Conventional Manner ◽  
Objective Type

High-resolution images of the surface topography of solid specimens can be obtained using the low-loss technique of Wells. If the specimen is placed inside a lens of the condenser/objective type, then it has been shown that the lens itself can be used to collect and filter the low-loss electrons. Since the probeforming lenses in TEM instruments fitted with scanning attachments are of this type, low-loss imaging should be possible.High-resolution, low-loss images have been obtained in a JEOL JEM 100B fitted with a scanning attachment and a thermal, fieldemission gun. No modifications were made to the instrument, but a wedge-shaped, specimen holder was made to fit the side-entry, goniometer stage. Thus the specimen is oriented initially at a glancing angle of about 30° to the beam direction. The instrument is set up in the conventional manner for STEM operation with all the lenses, including the projector, excited.

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