The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2012
Filed:
Jun. 01, 2010
Haruo Kojima, Kanagawa-ken, JP;
Haruo Kojima, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A transmission and reception module according to one embodiment of the present invention includes an antenna, a transmission circuit, a wave detection circuit, a high-frequency switch, a small-signal high-frequency diode limiter circuit, and a first power amplifier. The antenna transmits a transmission wave, or receives a reception wave. The transmission circuit is connected to the antenna via a circulator and supplies the transmission wave to the antenna. The wave detection circuit is connected to the antenna via the circulator and branches the reception wave received by the antenna to generate a control signal based on one branched reception wave. The high-frequency switch is connected to the wave detection circuit and suppresses a power of the other branched reception wave when the control signal is input thereto. The small-signal high-frequency diode limiter circuit is connected to the high-frequency switch and further suppresses the power of the other branched reception wave output from the high-frequency switch. The first power amplifier is connected to the small-signal high-frequency diode limiter circuit and amplifies the power of the other branched reception wave whose power has been suppressed by the small-signal high-frequency diode limiter circuit.