发明申请
- 专利标题: DOUBLE TRANSFORMER BALUN FOR MAXIMUM POWER AMPLIFIER POWER
- 专利标题(中): 双变压器BALUN用于最大功率放大器功率
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申请号: US13031833申请日: 2011-02-22
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公开(公告)号: US20110133835A1公开(公告)日: 2011-06-09
- 发明人: Jesus Alfonso Castaneda , Qiang Li , Ahmadreza (Reza) Rofougaran
- 申请人: Jesus Alfonso Castaneda , Qiang Li , Ahmadreza (Reza) Rofougaran
- 申请人地址: US CA IRVINE
- 专利权人: BROADCOM CORPORATION
- 当前专利权人: BROADCOM CORPORATION
- 当前专利权人地址: US CA IRVINE
- 主分类号: H03F1/00
- IPC分类号: H03F1/00 ; H01F27/30
摘要:
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 match the Z of an antenna or line that the PA is driving.
公开/授权文献
- US08086263B2 Double transformer balun for maximum power amplifier power 公开/授权日:2011-12-27
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