Zobrazeno 1 - 10
of 37
pro vyhledávání: '"J.G. McRory"'
Publikováno v:
IEEE Journal of Solid-State Circuits. 37:1290-1299
A 40 dB dynamic range, DC-4 GHz parallel-summation logarithmic amplifier is presented in this paper. The amplifier realizes a piecewise approximation to an exact logarithmic response. A design procedure that yields breakpoints on the exact response i
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 48:1024-1029
A 1.1-GHz fully integrated GaAs MESFET active inductor is presented in this paper. Both the inductance and loss resistance are tunable with the inductance independent of series loss tuning. The measured loss resistance is tunable over a -10- to +15-/
Publikováno v:
IEEE Journal of Solid-State Circuits. 34:157-161
The development of high-power linear ultrahigh-frequency amplifiers is made difficult by the low impedance of the devices used in the output stage, which causes matching difficulties and high radio-frequency current levels. A stacked field-effect tra
Autor:
Ronald H. Johnston, J.G. McRory
Publikováno v:
IEEE Antennas and Propagation Magazine. 40:40-48
An examination of the available literature shows that the accurate measurement of antenna efficiency is a difficult task, and that the available methods have potential for a substantial amount of error. This paper refines a method already presented,
Publikováno v:
ICMENS
Inductors play an important role in wireless front-end circuitry. Tunable inductors can provide more flexibility in optimizing RF devices such as filters and VCOs. A tunable inductor using a process fully compatible with CMOS has been constructed. Th
Publikováno v:
ICMENS
This paper reports a single-wafer micromachined radio-frequency (RF) inductor that can be integrated in a convetional RFIC device. The Inductor achieved a quality factor greater than 9 at 15 GHz and a self-resonance frequency well above 15 GHz. The i
Publikováno v:
15th International Conference on Microwaves, Radar and Wireless Communications (IEEE Cat. No.04EX824).
This paper reports a single-wafer micromachined radio-frequency (RF) inductor that can be integrated in a conventional RFIC device. The inductor achieved a quality factor greater than 9 at 5 GHz and a self-resonance frequency well above 15 GHz. The i
Publikováno v:
ICMENS
In this paper, we present results from our research on tunable inductors. The tunability is achieved with the use of thermal actuators that control spacing between main and secondary inductor.
Autor:
Ronald H. Johnston, J.G. McRory
Publikováno v:
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010).
Two methods of determining an antenna's efficiency are compared. One is called the reflection method and the other is called the Q method. Both methods use data that is collected from a shorted waveguide in a similar manner to the "Wheeler cap method
Publikováno v:
Engineering Solutions for the Next Millennium. 1999 IEEE Canadian Conference on Electrical and Computer Engineering (Cat. No.99TH8411).
Two combiners are compared for use in a LINC transmitter. Most LINC transmitters use matched hybrid combiners as they provide high isolation between input ports to provide undistorted signal combining. A tee combiner has also been explored for use in