Processing

Please wait...

Settings

Settings

Goto Application

1. WO2006018936 - FM DETECTION CIRCUIT

Publication Number WO/2006/018936
Publication Date 23.02.2006
International Application No. PCT/JP2005/012307
International Filing Date 04.07.2005
IPC
H03D 3/00 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
3Demodulation of angle-modulated oscillations
H04L 27/12 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
10Frequency-modulated carrier systems, i.e. using frequency-shift keying
12Modulator circuits; Transmitter circuits
CPC
H03D 2200/0023
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
2200Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
0001Circuit elements of demodulators
0023Balun circuits
H03D 3/26
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
3Demodulation of angle-, ; frequency- or phase-; modulated oscillations
26by means of sloping amplitude/frequency characteristic of tuned or reactive circuit
H03H 11/32
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
11Networks using active elements
02Multiple-port networks
32Balance-unbalance networks
H04L 27/148
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
10Frequency-modulated carrier systems, i.e. using frequency-shift keying
14Demodulator circuits; Receiver circuits
144with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
148using filters, including PLL-type filters
Applicants
  • 株式会社村田製作所 Murata Manufacturing Co., Ltd. [JP]/[JP] (AllExceptUS)
  • 加藤章 KATO, Akira [JP]/[JP] (UsOnly)
Inventors
  • 加藤章 KATO, Akira
Agents
  • 小森久夫 KOMORI, Hisao
Priority Data
2004-24037920.08.2004JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) FM DETECTION CIRCUIT
(FR) CIRCUIT DE DÉTECTION FM
(JA) FM検波回路
Abstract
(EN) An FM detection circuit comprising an unbalancing/balancing conversion circuit (2), a signal synthesizing circuit (3), a parallel circuit consisting of a first diode (D1) and a resonator (X1) and connected between the first balanced output terminal of the unbalancing/balancing conversion circuit (2) and one signal input terminal of the signal synthesizing circuit (3), and a parallel circuit consisting of a second diode (D2) and a capacity element (C1) and connected between the second balanced output terminal of the unbalancing/balancing conversion circuit (2) and the other signal input terminal of the signal synthesizing circuit (3), and a low pass filter (4) connected to the output terminal of the signal synthesizing circuit (3).
(FR) Circuit de détection FM comprenant un circuit de conversion déséquilibrage/équilibrage (2), un circuit de synthèse de signal (3), un circuit parallèle se composant d’une première diode (D1) et d’un résonateur (X1) et connecté entre la première borne de sortie équilibrée du circuit de conversion déséquilibrage/équilibrage (2) et une première borne d’entrée de signal du circuit de synthèse de signal (3), un circuit parallèle se composant d’une seconde diode (D2) et d’un élément de capacité (C1) et connecté entre la seconde borne de sortie équilibrée du circuit de conversion déséquilibrage/équilibrage (2) et l’autre borne d’entrée de signal du circuit de synthèse de signal (3), ainsi qu’un filtre passe-bas (4) connecté à la borne de sortie du circuit de synthèse de signal (3).
(JA)  不平衡・平衡変換回路(2)、信号合成回路(3)、不平衡・平衡変換回路(2)の第1の平衡出力端子と信号合成回路(3)の一方の信号入力端子の間に接続された第1のダイオード(D1)及び共振子(X1)からなる並列回路、不平衡・平衡変換回路(2)の第2の平衡出力端子と信号合成回路(3)のもう一方の信号入力端子の間に接続された第2のダイオード(D2)及び容量素子(C1)からなる並列回路、および信号合成回路(3)の出力端子に接続されたローパスフィルタ(4)を備える。
Related patent documents
Latest bibliographic data on file with the International Bureau