A 2-V 1.9-GHz Si down-conversion mixer with an LC phase shifter

This paper describes a 2.0-V 1.9-GHz silicon down-conversion mixer with an LC phase shifter in a 20-GHz bipolar process. In this circuit, the lower emitter-coupled pair in a Gilbert cell mixer is removed to enable low voltage operation, and instead an LC phase shifter is inserted between two current...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of solid-state circuits 1998-05, Vol.33 (5), p.812-815
Main Authors: Komurasaki, H., Sato, H., Sasaki, N., Miki, T.
Format: Article
Language:English
Subjects:
Analog integrated circuits
Batteries
Costs
Cutoff frequency
Low pass filters
Low voltage
Mixers
Phase shifters
Radio frequency
Silicon devices
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper describes a 2.0-V 1.9-GHz silicon down-conversion mixer with an LC phase shifter in a 20-GHz bipolar process. In this circuit, the lower emitter-coupled pair in a Gilbert cell mixer is removed to enable low voltage operation, and instead an LC phase shifter is inserted between two current sources. The time constant of the LC phase shifter has to be optimized, because the phase shifter acts as a low-pass filter and the lower cutoff frequency results in the loss of signal power. By this optimization, it can keep both high conversion gain and low distortion. The experimental results show conversion gain of 7.0 dB and the input third-order intercept point of -1.0 dBm are realized at 2.0 V.
ISSN:0018-9200
1558-173X
DOI:10.1109/4.668998