Double transformer balun for maximum power amplifier power

Details Double transformer balun for maximum power amplifier power Double transformer balun for maximum power amplifier power

2011-03-08

2011-03-08

Eng, George (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S114300

Reexamination Certificate

active

07904108

ABSTRACT:
Double transformer balun for maximum PA (Power Amplifier) power. A novel approach is presented herein by which conversion from a differential signal to single-ended signal may be achieved using a double transformer balun design. The secondary coils of the double transformer balun also operate as a choke for the PA supply voltage. The secondary coils can operate as an RF (Radio Frequency) trap or choke to keep any AC (Alternating Current) signal components and to pass any DC (Direct Current) components. By using a double transformer balun design, relatively thinner tracks may be employed thereby ensuring a high degree of electromagnetic coupling efficiency and high performance. Also, these relatively thinner tracks consume a relatively small amount of space on the die. The double transformer balun design also includes a matching Z (impedance) block that is operable to math the Z of an antenna or line that the PA is driving.

REFERENCES:
patent: 5731740 (1998-03-01), van de Westerlo
patent: 5986617 (1999-11-01), McLellan
patent: 6188918 (2001-02-01), Cockson
patent: 6697019 (2004-02-01), Hyuk-Joon et al.
patent: 6765810 (2004-07-01), Perry
patent: 6819914 (2004-11-01), Yan et al.
patent: 6882263 (2005-04-01), Yang et al.
patent: 2003/0197575 (2003-10-01), Rofougaran et al.
patent: 822 561 (1951-11-01), None

Affiliated with

Also associated with

Rating

Double transformer balun for maximum power amplifier power does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double transformer balun for maximum power amplifier power, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double transformer balun for maximum power amplifier power will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2689626