IT1110501B - Circuito di filtro passa-banda a inseguimento - Google Patents
Circuito di filtro passa-banda a inseguimentoInfo
- Publication number
- IT1110501B IT1110501B IT19585/79A IT1958579A IT1110501B IT 1110501 B IT1110501 B IT 1110501B IT 19585/79 A IT19585/79 A IT 19585/79A IT 1958579 A IT1958579 A IT 1958579A IT 1110501 B IT1110501 B IT 1110501B
- Authority
- IT
- Italy
- Prior art keywords
- band
- pass
- filter circuit
- belt filter
- belt
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/0405—Non-linear filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
- H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/06—Phase locked loops with a controlled oscillator having at least two frequency control terminals
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Filters And Equalizers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP749078A JPS54100639A (en) | 1978-01-26 | 1978-01-26 | Band-pass filter circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7919585A0 IT7919585A0 (it) | 1979-01-25 |
| IT1110501B true IT1110501B (it) | 1985-12-23 |
Family
ID=11667198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT19585/79A IT1110501B (it) | 1978-01-26 | 1979-01-25 | Circuito di filtro passa-banda a inseguimento |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4361894A (it) |
| JP (1) | JPS54100639A (it) |
| CA (1) | CA1143445A (it) |
| DE (1) | DE2902680C2 (it) |
| FR (1) | FR2415913B1 (it) |
| GB (1) | GB2016835B (it) |
| IT (1) | IT1110501B (it) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2080061B (en) * | 1980-07-02 | 1984-03-14 | Philips Electronic Associated | Amplifier circuit arrangement suitable for use in phase lock loop |
| US4525676A (en) * | 1981-02-24 | 1985-06-25 | Nippon Electric Co., Ltd. | PSK Demodulation system having carrier frequency variation compensation |
| JPS58131569A (ja) * | 1982-02-01 | 1983-08-05 | Honda Motor Co Ltd | 基準車輪速度設定装置 |
| US4539524A (en) * | 1983-12-30 | 1985-09-03 | Motorola, Inc. | Method and coherent demodulators for MSK signal |
| US4672632A (en) * | 1984-02-03 | 1987-06-09 | Motorola, Inc. | Optimized communications system and method employing channel synthesis and phase lock detection |
| JPS60203045A (ja) * | 1984-03-28 | 1985-10-14 | Nec Corp | 位相同期検波復調器 |
| JPS6211347A (ja) * | 1985-07-09 | 1987-01-20 | Nec Home Electronics Ltd | ４相ｐｓｋ復調装置 |
| US4794623A (en) * | 1985-10-17 | 1988-12-27 | At&T Telephone And Telegraph Company, At&T Bell Laboratories | Recovery of carrier signal from QAM double sideband suppressed carrier IF signal for use in synchronous demodulation |
| US5001727A (en) * | 1989-02-15 | 1991-03-19 | Terra Marine Engineering, Inc. | Carrier and data recovery and demodulation system |
| US5058136A (en) * | 1990-12-17 | 1991-10-15 | Motorola, Inc. | Coherent detection for QPSK modulation |
| US5397945A (en) * | 1992-08-04 | 1995-03-14 | Samsung Semiconductor, Inc. | Duty cycle control circuit |
| FI107090B (fi) * | 1999-04-19 | 2001-05-31 | Nokia Mobile Phones Ltd | Menetelmä ja järjestely resonaattorin virittämiseksi |
| US7082293B1 (en) * | 1999-10-21 | 2006-07-25 | Broadcom Corporation | Adaptive radio transceiver with CMOS offset PLL |
| US7414933B2 (en) * | 2002-08-12 | 2008-08-19 | Victor Company Of Japan, Ltd. | Reproducing apparatus having an improved PLL circuit and related computer program |
| DE102005024624B3 (de) * | 2005-05-30 | 2006-11-30 | Siemens Ag | Schaltungsanordnung zur Erzeugung eines Referenzsignals |
| CN101507107A (zh) * | 2006-08-23 | 2009-08-12 | Nxp股份有限公司 | 滤波器追踪和控制方法 |
| US20080100308A1 (en) * | 2006-10-25 | 2008-05-01 | Robert Crick | Apparatus for detecting imbalances in a paired line |
| US8232807B2 (en) * | 2006-10-25 | 2012-07-31 | Textron Innovations Inc. | Apparatus for detecting imbalances in a paired line |
| AT505079B1 (de) | 2007-03-21 | 2011-09-15 | Siemens Ag | Verfahren zur rekonstruktion eines störungsreduzierten periodischen spannungssignals |
| US9899133B2 (en) | 2013-08-01 | 2018-02-20 | Qorvo Us, Inc. | Advanced 3D inductor structures with confined magnetic field |
| US9780756B2 (en) * | 2013-08-01 | 2017-10-03 | Qorvo Us, Inc. | Calibration for a tunable RF filter structure |
| US9294046B2 (en) | 2013-03-15 | 2016-03-22 | Rf Micro Devices (Cayman Islands), Ltd. | RF power amplifier with PM feedback linearization |
| US9628045B2 (en) | 2013-08-01 | 2017-04-18 | Qorvo Us, Inc. | Cooperative tunable RF filters |
| US9444417B2 (en) | 2013-03-15 | 2016-09-13 | Qorvo Us, Inc. | Weakly coupled RF network based power amplifier architecture |
| US9893710B2 (en) | 2013-06-06 | 2018-02-13 | Qorvo Us, Inc. | High quality factor interconnect for RF circuits |
| US9705478B2 (en) | 2013-08-01 | 2017-07-11 | Qorvo Us, Inc. | Weakly coupled tunable RF receiver architecture |
| US9755671B2 (en) | 2013-08-01 | 2017-09-05 | Qorvo Us, Inc. | VSWR detector for a tunable filter structure |
| US12224096B2 (en) | 2013-03-15 | 2025-02-11 | Qorvo Us, Inc. | Advanced 3D inductor structures with confined magnetic field |
| US9825656B2 (en) | 2013-08-01 | 2017-11-21 | Qorvo Us, Inc. | Weakly coupled tunable RF transmitter architecture |
| US9859863B2 (en) | 2013-03-15 | 2018-01-02 | Qorvo Us, Inc. | RF filter structure for antenna diversity and beam forming |
| US9685928B2 (en) | 2013-08-01 | 2017-06-20 | Qorvo Us, Inc. | Interference rejection RF filters |
| US9871499B2 (en) | 2013-03-15 | 2018-01-16 | Qorvo Us, Inc. | Multi-band impedance tuners using weakly-coupled LC resonators |
| US9774311B2 (en) | 2013-03-15 | 2017-09-26 | Qorvo Us, Inc. | Filtering characteristic adjustments of weakly coupled tunable RF filters |
| US9966981B2 (en) | 2013-06-06 | 2018-05-08 | Qorvo Us, Inc. | Passive acoustic resonator based RF receiver |
| US9800282B2 (en) | 2013-06-06 | 2017-10-24 | Qorvo Us, Inc. | Passive voltage-gain network |
| US9780817B2 (en) | 2013-06-06 | 2017-10-03 | Qorvo Us, Inc. | RX shunt switching element-based RF front-end circuit |
| US9705542B2 (en) | 2013-06-06 | 2017-07-11 | Qorvo Us, Inc. | Reconfigurable RF filter |
| US10796835B2 (en) | 2015-08-24 | 2020-10-06 | Qorvo Us, Inc. | Stacked laminate inductors for high module volume utilization and performance-cost-size-processing-time tradeoff |
| US11139238B2 (en) | 2016-12-07 | 2021-10-05 | Qorvo Us, Inc. | High Q factor inductor structure |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2339633A (en) * | 1942-03-23 | 1944-01-18 | Bell Telephone Labor Inc | Variable selective system |
| US3217259A (en) * | 1959-07-06 | 1965-11-09 | Kenneth L Kotzebue | Receiver utilizing phase-locked parametric amplifier |
| US2976408A (en) * | 1960-04-25 | 1961-03-21 | Albert C Colaguori | Synchronous selectivity receiver |
| US3278685A (en) * | 1962-12-31 | 1966-10-11 | Ibm | Wave analyzing system |
| US3281534A (en) * | 1963-05-09 | 1966-10-25 | William C Dersch | Nasality meter |
| US3588752A (en) * | 1969-08-28 | 1971-06-28 | Sylvania Electric Prod | Tracking filter |
| US3718909A (en) * | 1970-06-18 | 1973-02-27 | Medtronic Inc | Rate controller and checker for pulse generator means |
| JPS5323659B1 (it) * | 1970-08-04 | 1978-07-15 | ||
| US3757244A (en) * | 1972-03-06 | 1973-09-04 | Bell Telephone Labor Inc | Mplitude phase locked loop with non linear filter responsive to error signal a |
| JPS5641010B2 (it) * | 1972-06-14 | 1981-09-25 | ||
| GB1433334A (en) * | 1972-06-20 | 1976-04-28 | Nat Res Dev | Single side-band radio |
| JPS5338075B2 (it) * | 1973-05-16 | 1978-10-13 | ||
| JPS579530B2 (it) * | 1974-07-08 | 1982-02-22 | ||
| JPS5229146B2 (it) * | 1974-12-18 | 1977-07-30 | ||
| NL7609029A (nl) * | 1975-08-19 | 1977-02-22 | British Petroleum Co | Inrichting voor het opvangen van zonneenergie. |
| US4061979A (en) * | 1975-10-20 | 1977-12-06 | Digital Communications Corporation | Phase locked loop with pre-set and squelch |
| JPS5831065B2 (ja) * | 1976-04-09 | 1983-07-04 | 日本電気株式会社 | Ｆｓｋ復調装置 |
| JPS5912214B2 (ja) * | 1976-12-10 | 1984-03-21 | 山水電気株式会社 | 同期信号発生回路 |
-
1978
- 1978-01-26 JP JP749078A patent/JPS54100639A/ja active Pending
-
1979
- 1979-01-24 DE DE2902680A patent/DE2902680C2/de not_active Expired
- 1979-01-25 FR FR7901923A patent/FR2415913B1/fr not_active Expired
- 1979-01-25 IT IT19585/79A patent/IT1110501B/it active
- 1979-01-26 GB GB7902925A patent/GB2016835B/en not_active Expired
- 1979-01-26 CA CA000320357A patent/CA1143445A/en not_active Expired
-
1980
- 1980-08-18 US US06/179,193 patent/US4361894A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2415913A1 (fr) | 1979-08-24 |
| DE2902680C2 (de) | 1983-08-25 |
| FR2415913B1 (fr) | 1986-08-29 |
| GB2016835A (en) | 1979-09-26 |
| CA1143445A (en) | 1983-03-22 |
| IT7919585A0 (it) | 1979-01-25 |
| DE2902680A1 (de) | 1979-08-02 |
| JPS54100639A (en) | 1979-08-08 |
| US4361894A (en) | 1982-11-30 |
| GB2016835B (en) | 1982-04-15 |
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