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- Renato Negra, W. Bachtold
- IEEE Transactions on Microwave Theory andâ€¦
- 2006

This paper presents a design-oriented analysis of two lumped-element load-coupling topologies, which can be used to approximate class-E switching conditions. The presented output circuits areâ€¦ (More)

- Federico Beffa, R. Vogt, W. Bachtold, E. Zellweger, Urs Lott
- 2002 IEEE Radio Frequency Integrated Circuitsâ€¦
- 2002

This paper describes the design of a low-IF receiver front-end for Bluetooth fabricated in a 0.18 /spl mu/m CMOS technology. The chip includes an LNA and an image-reject mixer and provides aâ€¦ (More)

- Renato Negra, F. M. Ghannouchi, W. Bachtold
- IEEE Transactions on Microwave Theory andâ€¦
- 2007

A design-oriented analysis of microwave transmission-line class-E and class-F amplifiers is presented in this paper. Multiharmonic transmission-line load networks are analyzed and compared in termsâ€¦ (More)

- Fred Ellinger, Urs Lott, W. Bachtold
- 1999 IEEE MTT-S International Microwave Symposiumâ€¦
- 1999

A monolithically integrated voltage controlled class-E oscillator for the C-band has been designed. The oscillator is optimized for high efficiency at ultra low supply voltages down to 0.9 V. Theâ€¦ (More)

- Felix Herzog, K. Kudielka, Dominique Erni, W. Bachtold
- IEEE Journal of Quantum Electronics
- 2006

A new type of optical phase-locked loop (OPLL), called the dither loop, is mathematically analyzed. The dither loop extracts a phase-error signal by applying a small phase disturbance to the localâ€¦ (More)

- Fred Ellinger, Urs Lott, W. Bachtold
- 1999 IEEE MTT-S International Microwave Symposiumâ€¦
- 1999

A variable gain LNA was designed for HIPERLAN I. A noise figure of only 1.7 dB is measured at a gain of 14.5 dB and a power consumption of 9 mW (V/sub DC/=3 V, I/sub DC/=3 mA). Over an amplitudeâ€¦ (More)

- Renato Negra, W. Bachtold
- 2005 European Microwave Conference
- 2005

This work presents the design and measurements of a monolithic microwave integrated circuit (MMIC) class-E power amplifier for wireless communication systems, which uses a novel output matchingâ€¦ (More)

- D Treyer, W. Bachtold
- IEEE Transactions on Microwave Theory andâ€¦
- 2005

A method to adaptively calibrate a Hartley phasing-type single-sideband (SSB) modulator for obtaining high carrier and image suppressions is presented. The Hartley SSB modulator is extended byâ€¦ (More)

- Torsten Brauner, R. Vogt, W. Bachtold
- IEEE Microwave and Wireless Components Letters
- 2003

This letter describes the implementation of an active receiving antenna at 5-6 GHz. An aperture-coupled patch antenna is designed to provide a differential interface toward monolithically integratedâ€¦ (More)

- C.E. Biber, M. Schmatz, Urs Lott, Eiji Morifuji, W. Bachtold
- 1998 IEEE MTT-S International Microwave Symposiumâ€¦
- 1998

In order to investigate the influence of pad parasitics on device noise performance, noise parameters on Si CMOS, GaAs MESFET and GaAs p-HEMT transistors were determined. Measurements of devices withâ€¦ (More)