Zobrazeno 1 - 10
of 57
pro vyhledávání: '"W. Bachtold"'
Publikováno v:
IET Microwaves, Antennas & Propagation. 2:794-800
The harmonic output of microwave lumped-element class-E load-coupling topologies is assessed. Measurement results on fabricated C-band class-E power amplifiers with either a modified lowpass and an optimised second-harmonic impedance network show tha
Autor:
W. Bachtold, F. Ellinger
Publikováno v:
IEEE Journal of Solid-State Circuits. 37:1256-1259
In this paper, a novel principle for vector modulator-based phase shifters is proposed, which enables continuously adjustable phase control with only one control voltage. The weighting of the vector paths is performed by a simple configuration of DC-
Publikováno v:
IEEE Journal of Solid-State Circuits. 37:481-486
An ultracompact reflective-type monolithic microwave integrated circuit (MMIC) phase shifter is presented, fabricated using a commercial 0.6-/spl mu/m GaAs MESFET process. The circuit has been developed for low-cost smart antenna receivers, operating
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 49:913-917
The design and results of an ultra-compact single-load reflective-type monolithic-microwave integrated-circuit phase shifter at 6.2 GHz for a satellite radar system is presented in this paper, which has been fabricated using a commercial 0.6-/spl mu/
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 49:964-969
The design and performance of a vector-modulator-based phase shifter for high-performance radio local area networks at 5.2 GHz is presented in this paper. Low power consumption is achieved using a 0.6-/spl mu/m GaAs MESFET process. At a voltage suppl
Publikováno v:
IEEE Microwave and Wireless Components Letters. 15:543-545
This letter presents the design, implementation, and measurements of two monolithic low-IF receivers compliant with the main WLAN standards. The first receiver targets the three 5GHz U-NII bands, while the second allows dual-band operation in the 2GH
Autor:
Frank Ellinger, W. Bachtold
Publikováno v:
IEEE Microwave and Wireless Components Letters. 12:348-350
A low-power consuming adaptive antenna receiver module at C-band for 802.11a and HIPERLAN is presented. The highly integrated GaAs microwave monolithic integrated circuit consists of low noise amplifiers, calibration switches and a vector modulator w
Autor:
Mohammad R. Taghizadeh, Sven Eitel, S.J. Fancey, Karlheinz H. Gulden, W. Bachtold, H.-P. Gauggel
Publikováno v:
IEEE Photonics Technology Letters. 12:459-461
In this paper, work is described on the fabrication of highly uniform 8/spl times/8 arrays of GaAs-AlGaAs vertical-cavity surface-emitting lasers (VCSEL's). Oxide-confined VCSEL arrays show an average threshold current of 0.74/spl plusmn/0.02 mA, an
Publikováno v:
The 2005 IEEE Annual Conference Wireless and Micrwave Technology, 2005..
This paper presents the design, implementation and measurements of a BiCMOS integrated tunable low noise amplifier for 5 GHz WLAN applications. It consists of a cascode gain cell, noise and power matched to a 50 /spl Omega/ input source, and power ma
Publikováno v:
The 2005 IEEE Annual Conference Wireless and Micrwave Technology, 2005..
This paper presents a dual-band RF front-end for WLAN low-IF receivers, operating in the 2.4 GHz ISM band and the three 5 GHz U-NII bands. The RF receiver uses an LNA with dual input stages, replacing the use of multiple independent LNAs operating at