摘要:
A laminated high-frequency switch module for selecting either a transmission circuit or a reception circuit of each of transmission/reception systems by switching, comprising a demultiplexer for demultiplexing signals of the transmission/reception systems, high-frequency switch circuits for selecting either the signal path of a reception signal from the demultiplexer to the reception circuit or the signal path of a transmission signal from the transmission circuit to the demultiplexer, and means for measuring the power of the transmission signal from the transmission circuit, characterized in that the laminate is composed of dielectric layers having electrode patterns, and the demultiplexer, the high-frequency switch circuits, and the power measuring means are constituted of electrode patterns in the laminate.
摘要:
A high-frequency switch module which comprises a high-frequency switch circuit connected among an antenna, a transmission circuit, and a reception circuit and comprising switching elements and a surface acoustic wave filter connected between the high-frequency switch circuit and the reception circuit, uses a laminate constituted of dielectric layers having electrode patterns as the multilayered board, and has a phase correction circuit disposed between the switch circuit and the surface acoustic wave filter, wherein the high-frequency switch circuit comprises a switching element, a transmission line, and a capacitor as main elements, with at least a part of the transmission line and the capacitor constituted of an electrode pattern in the laminate, and with the surface acoustic wave filter mounted on the laminate.
摘要:
A high-frequency module is connected to a transmitting circuit (TX), a receiving circuit (RX) and an antenna (ANT) to control the connections between the transmitting circuit (TX) and the antenna (ANT) and between the receiving circuit (RX) and the antenna (ANT). The module comprises means (2) for controlling transmitted signals, which includes a first phase-shift circuit (5) and a high-frequency amplifier (4) provided between the antenna (ANT) and the transmitting circuit (TX). The high-frequency amplifier (4) and the first phase-shift circuit (5) are integrated into a module composed of a plurality of dielectric layers.
摘要:
A high-frequency switch module for selectively connecting the transmitter or receiver circuit of a plurality of different transmitting and receiving systems comprises a first and second filter circuits with different pass bands; a first switch circuit connected with the first filter circuit for selectively connecting the transmitter or receiver circuit of the first transmitting and receiving system and a second switch circuit connected with the second filter circuit for selectively connecting the transmitter circuits of the second and third transmitting and receiving systems, the receiver circuit of the second transmitting and receiving system, or the receiver circuit of the third transmitting and receiving system. The transmitter circuit of the second transmitting and receiving system is identical to that of the third transmitting and receiving system. The high-frequency switch module can be designed compact while providing desired electrical characteristics. The second and third transmitting and receiving systems can share some components of their transmitter circuits, resulting in a smaller and more lightweight portable communication device using such a high-frequency switch module.
摘要:
A DC-DC converter comprising a soft-magnetic, multi-layer substrate provided with a laminated coil constituted by connecting pluralities of conductor lines, and a semiconductor integrated circuit device comprising a switching device and a control circuit, which are mounted on the soft-magnetic, multi-layer substrate; the semiconductor integrated circuit device comprising an input terminal, an output terminal, a first control terminal for controlling the ON/OFF of the switching device, a second control terminal for variably controlling output voltage, and pluralities of ground terminals; the soft-magnetic, multi-layer substrate comprising first external terminals formed on a first main surface, first connecting wires formed on the first main surface and/or on nearby layers, second connecting wires formed between the side surface of the multi-layer substrate and a periphery of the laminated coil, and second external terminals formed on a second main surface; and terminals of the semiconductor integrated circuit device being connected to the first external terminals on the multi-layer substrate, at least part of the first external terminals being electrically connected to the second external terminals through the first and second connecting wires, and the input or output terminal being connected to the second external terminals via the laminated coil.
摘要:
A laminated high-frequency switch module for selectine either a transmission circuit or a reception circuit of each of transmission/reception systems by switching, comprising a demultiplexer for demultiplexing signals of the transmission/reception systems, high-frequency switch circuits for selecting either the signal path of a reception signal from the demultiplexer to the reception circuit or the signal path of a transmission signal from the transmission circuit to the demultiplexer, and means for measuring the power of the transmission signal from the transmission circuit, characterized in that the laminate is composed of dielectric layers having electrode patterns, and the demultiplexer, the high-frequency switch circuits, and the power measuring means are constituted of electrode patterns in the laminate.
摘要:
(57) Abstract: A high-frequency switch circuit common to a plurality of frequency bands comprises a first high-frequency switch connected to first high-frequency signal input and output terminals and adapted to pass transmission signals of a first or a second frequency band and block received signals of die first and second frequency band; and a demultiplexer has a first high-frequency circuit which consists of a first phaser connected to the first terminal and a first bandpass filter succeeding to the first phaser, and a second high-frequency circuit which consists of a second phaser connected to the first terminal and a second bandpass filter succeeding to the second phaser. The transmission line in the first phaser has a line length such that the input impedance of the first high-frequency circuit is substantially open in the pass band of the second bandpass filter, whereas the transmission line in the second phaser has a line length such thai the input impedance of the second high-frequency circuit is substantially open in the pass band of the first bandpass fiber. Thus, the high-frequency switch circuit passes one of the received signals of the first and second frequency bands and blocks the other.