Reconfigurable RF CMOS Circuit for Cognitive Radio

Reconfigurable RF CMOS Circuit for Cognitive Radio

Cognitive radio and/or SDR (Software Defined Radio) inherently requires multi-band and multi standard wireless circuit. The circuit is implemented based on Si CMOS technology. In this article, the recent progress of Si RF CMOS is described and the reconfigurable RF CMOS circuit which was proposed by the authors is introduced. At the present and in the future, several kind of Si CMOS technology ...

Education on CMOS RF Circuit Reliability

This paper presents a design methodology to study RF circuit performance degradations due to hot carrier and soft breakdown. The experimental facts of DC stress on the RF properties of MOSFETs are given. The equivalent circuit model is developed and verified by measurement data. RF circuit such as a low noise amplifier is evaluated using SPICE circuit simulation. Noise figure and s-parameter de...

Reconfigurable Microstrip Antennas for Cognitive Radio

Compact MOS Modelling for RF CMOS Circuit Simulation

Modem CMOS technologies are becoming increasingly attractive for RF applications. This imposes stringent requirements on compact models used in circuit simulation: not only currents and charges, but also noise, power gain, impedances, and harmonic distortion must be modelled accurately. In this paper several of these issues will be addressed with the help of Philips' new public-domain compact M...

AMS/RF-CMOS circuit design for wireless transceivers

Mobile phones have evolved from ''simple'' devices allowing phone calls over a wireless link to ''all-in-one'' devices. Besides keeping us always best connected, handheld devices have become true multimedia centers where we can watch movies or our favorite team's soccer game while making a phone call or chatting over the internet. Hence, in mobile terminals, multi-standard capability is to be s...