Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2006-02-14
2006-02-14
Shingleton, Michael B. (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
C333S133000, C333S193000, C333S001100, C333S024200, C455S078000, C455S082000, C455S083000
Reexamination Certificate
active
06998912
ABSTRACT:
A high frequency composite switch module for a mobile communication device, wherein high frequency circuits such as a power amplifier, a circuit functioning as a transmitter/receiver switching circuit, a surface acoustic wave (SAW) filter for reception, and the like are modularized into one unit. A transmitter circuit includes a transmitter side impedance converter comprising an impedance matching circuit and an impedance converter circuit, a power amplifier and a power supply unit. A receiver circuit includes a receiver-side impedance converter comprising a phase shifting circuit and a SAW filter. The power amplifier and the impedance converter circuit are integrated into one IC chip. At least one of the matching circuit, the power supply unit and the phase shifting circuit is formed inside a multilayer board comprised of a conductor layer and a dielectric layer. The IC chip and the SAW filter are also mounted on the multilayer board.
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International Search Report for PCT Application No. PCT/JP02/09259 mailed Jan. 14, 2003.
Form PCT/ISA/210 English Translation.
Kushitani Hiroshi
Satoh Yuki
RatnerPrestia
Shingleton Michael B.
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