Title:
MULTI-BAND AMPLIFIER HAVING MULTI-TAP RF CHOKE
Document Type and Number:
WIPO Patent Application WO2002084861
Kind Code:
A3
Abstract:
An amplifier circuit formed on a single semiconductor substrate includes a first amplifier having at least one stage for amplifying signals within a first frequency band, a first amplifier having at least one stage for amplifying signals within a second frequency band; and a tapped coil having one end thereof coupled to a stage of the first amplifier and a tap thereof coupled to a stage of the second amplifier. The amplifier circuit may be an RF amplifier circuit, a first portion of the tapped coil serving as an RF choke for said stage of the first amplifier, and a second portion of the tapped coil serving as an RF choke for said stage of the second amplifier. Sharing the tapped coil between multiple band amplifiers increases integration density.
Inventors:
JUDKINS JAMES G (US)
Application Number:
PCT/US2002/011783
Publication Date:
December 27, 2002
Filing Date:
April 11, 2002
Export Citation:
Assignee:
TROPIAN INC (US)
JUDKINS JAMES G (US)
JUDKINS JAMES G (US)
International Classes:
H03F3/191; H03F3/60; (IPC1-7): H03F3/195
Foreign References:
| US3274506A | 1966-09-20 | |||
| US3703685A | 1972-11-21 |
Other References:
LONG J R ET AL: "A 5.1-5.8 GHz low-power image-reject downconverter in SiGe technology", BIPOLAR/BICMOS CIRCUITS AND TECHNOLOGY MEETING, 1999. PROCEEDINGS OF THE 1999 MINNEAPOLIS, MN, USA 26-28 SEPT. 1999, PISCATAWAY, NJ, USA,IEEE, US, PAGE(S) 67-70, ISBN: 0-7803-5712-4, XP010359511
GRAU G ET AL: "A current-folded up-conversion mixer and a VCO with center-tapped inductor in a SiGe-HBT technology for 5 GHz wireless LAN applications", BIPOLAR/BICMOS CIRCUITS AND TECHNOLOGY MEETING, 1999. PROCEEDINGS OF THE 1999 MINNEAPOLIS, MN, USA 26-28 SEPT. 1999, PISCATAWAY, NJ, USA,IEEE, US, PAGE(S) 161-164, ISBN: 0-7803-5712-4, XP010359503
YANG ET AL: "A compact and wideband GaAs P-HEMT distributed amplifier IC basewd on a micro-machined CPW", 2000, IEEE, MTT-S DIGEST, TU3D-3, XP002217571
WILSON D G ET AL: "Integrated RF receiver front ends and frequency synthesizers for wireless", XP010164715
FRLAN E ET AL: "Computer aided design of square spiral transformers and inductors (MIC application)", XP010085669
GRAU G ET AL: "A current-folded up-conversion mixer and a VCO with center-tapped inductor in a SiGe-HBT technology for 5 GHz wireless LAN applications", BIPOLAR/BICMOS CIRCUITS AND TECHNOLOGY MEETING, 1999. PROCEEDINGS OF THE 1999 MINNEAPOLIS, MN, USA 26-28 SEPT. 1999, PISCATAWAY, NJ, USA,IEEE, US, PAGE(S) 161-164, ISBN: 0-7803-5712-4, XP010359503
YANG ET AL: "A compact and wideband GaAs P-HEMT distributed amplifier IC basewd on a micro-machined CPW", 2000, IEEE, MTT-S DIGEST, TU3D-3, XP002217571
WILSON D G ET AL: "Integrated RF receiver front ends and frequency synthesizers for wireless", XP010164715
FRLAN E ET AL: "Computer aided design of square spiral transformers and inductors (MIC application)", XP010085669
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