1. Low Power Consumption Mixer Based on Current
Conveyor for Wireless Systems
R. Diaz, A. Castillo, H. Garcia, D. Ramos, S.L. Khemchandani, J. del Pino.
Dep. Ingeniería Electrónica y Automática / Instituto Universitario de Microelectrónica Aplicada (IUMA), Universidad de Las Palmas de Gran Canaria, Spain.
XXIV Design of Circuits and Integrated Systems Conference
vol. --, pp. --,
Zaragoza, Spain (2009)
Abstract
This paper presents a design of a low power consumption mixer based on a switching quad and a
transimpedance current conveyor stage. This mixer has been implemented in a 0.35 µm CMOS process. The
whole mixer draws 580 µA from the ±1.65V voltage supply, with a total gain of 23.2 dB, a noise figure around
31.26 dB and an IIP3 of 0 dBm. The developed mixer is suitable for the most usual wireless
communications standards like DVB-H,WiFi, Bluetooth etc…
Mixer Design
Measurements & Simulations
Figure 3. Switching quad gain versus biasing.
Figure 4. Switching quad noise figure versus
Figure 2. Mixer based on current conveyors. biasing.
Fig. 14. Measured and simulated RF-VGA NF
for different values of I02.
0
Figure 5. S11.
Figure 6. Current conveyor
Schematic.
Figure1: CMOS switching quad. Conclusions
In this paper a low power consumption mixer based
on current conveyor has been presented. a gain of
13.79 dB with a noise figure of 33dB and an IIP3 of 4.5
dBm have been obtained. The most important
achievement of this work is the low power
consumption (1.91 mW). Also a comparative with
other previous works has been presented and it can
be observed how the circuit specifications are similar
than other works but with a lower power
consumption. In conclusion this mixer is suitable for
the most typical wireless standards like WiFi,
Bluetooth, GPS, etc…
Acknowledgement
This work is partially supported by the Spanish Ministry of
Science and Innovation (TEC2008-06881-C03-01) and the
Figure 7. Mixer layout. Spanish Ministry of Industry, Tourism and Trade
(TSI-020400-2008-71).
INSTITUTO UNIVERSITARIO DE MICROELECTRÓNICA APLICADA (IUMA)
UNIVERSIDAD DE LAS PALMAS DE GRAN CANARIA (ULPGC
