LOW-PASS FILTER AND HIGH-FREQUENCY SWITCH USING THE SAME

LOW-PASS FILTER AND HIGH-FREQUENCY SWITCH USING THE SAME

PROBLEM TO BE SOLVED: To provide a low-pass filter with a small size and excellent performance and to provide a high-frequency switch using the same. SOLUTION: There is provided an input terminal and an output terminal, between which a first parallel resonant circuit and a second one are series-conn...

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1. Verfasser: FUKAMACHI KEISUKE
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
PULSE TECHNIQUE
RESONATORS
RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
TRANSMISSION
WAVEGUIDES
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creator FUKAMACHI KEISUKE
description PROBLEM TO BE SOLVED: To provide a low-pass filter with a small size and excellent performance and to provide a high-frequency switch using the same. SOLUTION: There is provided an input terminal and an output terminal, between which a first parallel resonant circuit and a second one are series-connected. The resonant frequency of the first parallel resonant circuit comprising a transmission line L1 and a capacitor C1 is set at nearly equal to a double wave of the pass band, while the resonant frequency of the second parallel resonant circuit comprising a transmission line L2 and a capacitor C4 is set at nearly equal to n times the wave of the pass band. A transmission line L4 for a shunt is connected with a connecting point of the first and second parallel resonant circuits. COPYRIGHT: (C)2005,JPO&NCIPI
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SOLUTION: There is provided an input terminal and an output terminal, between which a first parallel resonant circuit and a second one are series-connected. The resonant frequency of the first parallel resonant circuit comprising a transmission line L1 and a capacitor C1 is set at nearly equal to a double wave of the pass band, while the resonant frequency of the second parallel resonant circuit comprising a transmission line L2 and a capacitor C4 is set at nearly equal to n times the wave of the pass band. A transmission line L4 for a shunt is connected with a connecting point of the first and second parallel resonant circuits. 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subjects BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
PULSE TECHNIQUE
RESONATORS
RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
TRANSMISSION
WAVEGUIDES
title LOW-PASS FILTER AND HIGH-FREQUENCY SWITCH USING THE SAME
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