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| Author | : David Lindsay Wills |
| Publisher | : |
| Total Pages | : 132 |
| Release | : 1985 |
| Genre | : |
| ISBN | : |
| Author | : Cletus A. Hoer |
| Publisher | : |
| Total Pages | : 7 |
| Release | : 1972 |
| Genre | : |
| ISBN | : |
The patent describes a broad-band lumped element directional coupler for measuring either the forward or reflected power in a coaxial transmission line. A resistive voltage divider is coupled to the center conductor of a transmission line with a capacitor to keep the phase of the voltage sampling circuit equal to the phase of the current sampling circuit. Capacitors shunting the resistors make the voltage ratio of the resistive voltage divider independent of frequency over a large frequency range. Directivity greater than 50 dB is achieved over a large frequency range for coupling ratios of 30, 40 and 50 dB.
| Author | : Constantine Rodolph Jenkins |
| Publisher | : |
| Total Pages | : 116 |
| Release | : 1971 |
| Genre | : Directional couplers |
| ISBN | : |
"Lumped element directional couplers are desirable at frequencies below the VHF range because they eliminate the large physical size necessary for the distributed element directional couplers. The purpose of this work is to describe the theory and design of such low frequency lumped element directional couplers. A model for the coupler is developed and the equations which describe it are derived. Scattering matrices for one and two section couplers are obtained. Computer solutions for three section couplers are presented. Experimental results for one, two, and three section couplers are presented and comparison with theory are made. Comparisons of theoretical and experimental work show that lumped element couplers are useful at low frequencies"--Abstract, leaf ii.
| Author | : Dawit Y. Naizghi |
| Publisher | : |
| Total Pages | : 43 |
| Release | : 2014 |
| Genre | : Directional couplers |
| ISBN | : |
The following paper presents the design and test of a 415 MHz UHF directional coupler. A coupled line and lumped element directional couplers were designed and simulated using Advanced Design System (ADS) and optimized to achieve the required coupling coefficient and isolation. The S-parameter plots were generated to characterize the performance of the designed couplers.
| Author | : |
| Publisher | : |
| Total Pages | : 74 |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
| Author | : Robert Ansel Eidson |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 1953 |
| Genre | : Electronics |
| ISBN | : |
| Author | : Richard K. Ulrich |
| Publisher | : John Wiley & Sons |
| Total Pages | : 852 |
| Release | : 2006-02-24 |
| Genre | : Technology & Engineering |
| ISBN | : 0471466093 |
As in the First Edition, each chapter in this new Second Edition is authored by one or more acknowledged experts and then carefully edited to ensure a consistent level of quality and approach throughout. There are new chapters on passive devices, RF and microwave packaging, electronic package assembly, and cost evaluation and assembly, while organic and ceramic substrates are now covered in separate chapters. All the hallmarks of the First Edition, which became an industry standard and a popular graduate-level textbook, have been retained. An Instructor's Manual presenting detailed solutions to all the problems in the book is available upon request from the Wiley Makerting Department.
| Author | : Yoshihiro Konishi |
| Publisher | : CRC Press |
| Total Pages | : 300 |
| Release | : 2018-10-08 |
| Genre | : Technology & Engineering |
| ISBN | : 1351830856 |
Provides a grounding in the physics behind the operational principles of high frequency technologies. The text presents up-to-date methods, as well as the research and developments of more efficient devices for use in applications, from mobile and satellite communications and wireless Local Area Networks to energy transformation and sensors. Examples and theories support the material.
| Author | : Donald L. Starkey |
| Publisher | : |
| Total Pages | : 142 |
| Release | : 1967 |
| Genre | : |
| ISBN | : |
| Author | : Jorge A. Rodriguez Santiago |
| Publisher | : |
| Total Pages | : 80 |
| Release | : 1993 |
| Genre | : |
| ISBN | : |
