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A complete frequency synthesizer occupying 1.1 mm2 in 65 nm CMOS is presented. It is composed of a push-push quadrature VCO that delivers two L0 signals in 20 and 40 GHz bands. The PLL consumes 80 mW including buffers, and achieves a phase noise lower than -100 and -97.5 dBc/Hz for the 20 GHz and the 40 GHz signals, respectively.
A nano-sized oscillator for RF applications is presented which is based on two spintronic effects, the tunneling magnetoresistance (TMR) and the spin momentum transfer torque. The oscillation frequency is several GHz and can be tuned by both a DC bias current and an external DC magnetic field. High compactness, high tunability and full compatibility with standard CMOS process make this spin torque...
This paper presents the concept of using a MEMS piezoelectric actuated tunable inductor in the design of a wideband high performance VCO. Furthermore, a model of the tunable inductor is presented to facilitate the VCO design and simulation. In addition, by means of this model important characteristics of the tunable inductor can be derived enabling a design of the VCO to be superior in phase noise...
A fully integrated 2.4 GHz transceiver based on the IEEE802.15.4 specification has been designed using a 130 nm CMOS technology. Concurrent system and design optimizations were required to reach an energy efficiency of 21.5 nJ/bit in RX mode and 32.5 nJ/bit in TX modes, respectively, at a data rate of 250 kbit/s. The circuit includes a -5 dBm transmitter, a -81 dBm sensitivity receiver, an integer...
The frequency stability of integrated oscillators has become an increasingly important issue for the next generation of digital RF transceivers. RF oscillators using high-Q BAW resonators have been demonstrated to provide excellent performance in terms of stability, phase noise and power consumption. Nevertheless, the frequency tuning range of BAW oscillators is still limited by the piezoelectric...
In this paper, the design of two VCOs for wireless multi-standard applications is presented. These circuits have been produced using CMOS/SOI technology, with body voltage to control power consumption and phase noise performance. A new architecture for multi-standard applications is proposed. To our knowledge, this is the first structure using a balun to change the oscillation frequency and the body...
The design and the optimization of a new VCO operating at 60GHz is detailed. This key block in millimeter-wave transceivers takes advantage of a promising CMOS PD-SOI technology on a high-resistivity substrate (rho>1000Omegacm). As a result, an innovative architecture has been chosen to overcome difficulties encountered in the classical LC tank structure. One of the major issues in microwave networks...
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