Invention Grant
- Patent Title: Technology for extending a radio frequency (RF) bandwidth of an envelope tracking (ET) power amplifier (PA)
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Application No.: US13925433Application Date: 2013-06-24
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Publication No.: US10109999B2Publication Date: 2018-10-23
- Inventor: Mark B. Walker
- Applicant: Raytheon Company
- Applicant Address: US MA Waltham
- Assignee: Raytheon Company
- Current Assignee: Raytheon Company
- Current Assignee Address: US MA Waltham
- Main IPC: H03G3/20
- IPC: H03G3/20 ; H02J1/00 ; H03F1/02 ; H03F1/30 ; H03F1/56
Abstract:
An envelope tracking power supply (ET PS) transmission line switch can be operable between an ET PS and a radio frequency (RF) power amplifier (PA). The ET PS transmission line switch assembly can include a quarter wavelength (¼λ) transmission line configured for high impedance at a specified low RF and a switch coupled to a specified point on the quarter wavelength transmission line to generate a high frequency quarter wavelength transmission line when the switch is toggled. The quarter wavelength transmission line is configured to be coupled to a voltage output of the ET PS and a RF output of the RF PA. The high frequency quarter wavelength transmission line is configured for high impedance at a specified high RF, and the specified high RF is higher than the specified low RF.
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