KR20090075615A - 튜너 - Google Patents
튜너 Download PDFInfo
- Publication number
- KR20090075615A KR20090075615A KR1020080109981A KR20080109981A KR20090075615A KR 20090075615 A KR20090075615 A KR 20090075615A KR 1020080109981 A KR1020080109981 A KR 1020080109981A KR 20080109981 A KR20080109981 A KR 20080109981A KR 20090075615 A KR20090075615 A KR 20090075615A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- tunable filter
- filter
- frequency
- low noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/455—Demodulation-circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Abstract
Description
Claims (12)
- 수신되는 RF(Radio Frequency) 신호를 저잡음 증폭하는 저잡음 증폭기;채널제어신호에 따라 중심 주파수가 가변되면서 상기 저잡음 증폭기의 출력신호를 필터링하는 튜너블 필터;상기 채널제어신호에 따라 동일 주파수의 복수 위상을 가지는 국부발진신호를 발생하는 국부발진기; 및상기 튜너블 필터 및 상기 국부발진기의 출력신호를 혼합하여 I(In-phase) 채널 및 Q(Quadrature-phase) 채널의 IF(Intermediate Frequency) 신호를 생성하는 혼합기를 포함하여 구성된 튜너.
- 제 1 항에 있어서,상기 저잡음 증폭기의 출력신호의 세기를 검출하고, 검출한 세기에 따라 상기 저잡음 증폭기의 증폭이득을 조절하는 RSSI(Received Signal Strength Indicator)를 더 포함하는 것을 특징으로 하는 튜너.
- 제 1 항에 있어서, 상기 튜너블 필터는;수신하고자 하는 RF 신호의 주파수 대역을 복수 개로 나누고 각각의 주파수 대역의 RF 신호를 필터링할 수 있는 복수의 패시브 튜너블 필터를 병렬로 결합하는 것을 특징으로 하는 튜너.
- 제 1 항에 있어서, 상기 튜너블 필터는;저주파 대역의 RF 신호를 필터링하는 액티브 튜너블 필터와 고주파 대역의 RF 신호를 필터링하는 패시브 튜너블 필터가 하이브리드 형태로 병렬 결합되는 것을 특징으로 하는 튜너.
- 제 3 항 또는 제 4 항에 있어서, 상기 패시브 튜너블 필터는;상기 채널 제어신호에 따라 커패시턴스가 가변되어 중심주파수를 가변시키는 가변 커패시터를 포함하는 것을 특징으로 하는 튜너.
- 제 1 항에 있어서, 상기 튜너블 필터는;패시브 튜너블 필터인 필터 코어;상기 저잡음 증폭기의 출력 임피던스를 변환하여 주는 제 1 임피던스 변환부; 및채널 제어신호에 따라 스위칭되어 상기 저잡음 증폭기의 출력신호를 상기 임 피던스 변환부를 통해 상기 필터 코어로 입력시키거나 또는 상기 저잡음 증폭기의 출력신호를 바이패스시켜 상기 필터 코어로 입력시키는 제 1 스위치를 더 포함하는 것을 특징으로 하는 튜너.
- 제 6 항에 있어서, 상기 필터 코어와 상기 혼합기의 사이에;제 2 임피던스 변환부; 및상기 필터 코어의 출력신호를 상기 제 2 임피던스 변환부를 통해 상기 혼합기로 입력시키거나 또는 상기 필터 코어의 출력신호를 바이패스시켜 상기 혼합기로 입력시키는 제 2 스위치를 더 포함하는 것을 특징으로 하는 튜너.
- 제 1 항에 있어서,상기 국부발진기의 출력신호에 따라 톤 신호를 발생하는 톤 발생기; 및스위칭 신호에 따라 상기 저잡음 증폭기 또는 상기 톤 발생기의 출력신호를 선택하여 상기 가변 튜너블 필터로 입력시키는 멀티플렉서를 더 포함하는 것을 특징으로 하는 튜너.
- 제 1 항에 있어서,상기 혼합기의 출력신호를 필터링하고, I 채널 및 Q 채널 IF 신호의 에러를 보정하여 복조기로 출력하는 IF 신호 처리부를 더 포함하는 것을 특징으로 하는 튜너.
- 제 9 항에 있어서, 상기 IF 신호 처리부는;채널 제어신호를 발생하여 상기 튜너블 필터의 중심 주파수 또는 컷오프 주파수를 조절하는 것을 특징으로 하는 튜너.
- 제 9 항에 있어서, 상기 IF 신호 처리부는;상기 IF 신호의 주파수를 상기 복조기에서 요구되는 주파수로 변환하는 주파수 변환기능을 포함하는 것을 특징으로 하는 튜너.
- 제 9 항에 있어서, 상기 IF 신호 처리부는;아날로그 또는 디지털 방식으로 IF 신호를 처리하는 것을 특징으로 하는 튜너.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20080001355 | 2008-01-04 | ||
| KR1020080001355 | 2008-01-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20090075615A true KR20090075615A (ko) | 2009-07-08 |
| KR101454487B1 KR101454487B1 (ko) | 2014-11-03 |
Family
ID=40844971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020080109981A Expired - Fee Related KR101454487B1 (ko) | 2008-01-04 | 2008-11-06 | 튜너 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US8103233B2 (ko) |
| KR (1) | KR101454487B1 (ko) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101350583B1 (ko) * | 2012-05-31 | 2014-01-13 | 삼성전기주식회사 | 방송 수신기에서의 채널 튜닝 장치 및 방법 |
| KR101365311B1 (ko) * | 2012-07-31 | 2014-02-19 | 삼성전기주식회사 | 적응형 필터 및 적응형 필터링 방법 |
| CN115085744A (zh) * | 2021-03-12 | 2022-09-20 | 瑞昱半导体股份有限公司 | 发射器 |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7877070B2 (en) * | 2006-09-29 | 2011-01-25 | Broadcom Corp. | Method and system for tuning an antenna using injection |
| US8472910B1 (en) * | 2008-07-03 | 2013-06-25 | Rf Micro Devices, Inc. | Adaptive impedance translation circuit |
| US8494470B2 (en) | 2008-11-25 | 2013-07-23 | Silicon Laboratories Inc. | Integrated receivers and integrated circuit having integrated inductors |
| JP4715926B2 (ja) * | 2009-01-14 | 2011-07-06 | カシオ計算機株式会社 | 電波受信装置 |
| US8180310B2 (en) * | 2009-04-07 | 2012-05-15 | Intel Mobile Communications GmbH | Filtering using impedance translator |
| JP4816764B2 (ja) | 2009-05-28 | 2011-11-16 | カシオ計算機株式会社 | 電波受信装置 |
| US8725097B2 (en) * | 2010-02-09 | 2014-05-13 | Broadcom Corporation | Amplifier for cable and terrestrial applications with independent stage frequency tilt |
| US8422543B2 (en) * | 2010-05-28 | 2013-04-16 | Echostar Technologies L.L.C. | Apparatus, systems and methods of signal compensation for different signals communicated over a coaxial cable system |
| US8594583B2 (en) | 2010-12-09 | 2013-11-26 | Analog Devices, Inc. | Apparatus and method for radio frequency reception with temperature and frequency independent gain |
| EP2487787A1 (en) * | 2011-02-11 | 2012-08-15 | Telefonaktiebolaget L M Ericsson (PUBL) | Frequency translation filter apparatus and method |
| GB201105400D0 (en) * | 2011-03-30 | 2011-05-11 | Power Electronic Measurements Ltd | Apparatus for current measurement |
| US8571511B2 (en) * | 2011-06-10 | 2013-10-29 | Analog Devices, Inc. | Apparatus and method for a wideband RF mixer |
| US8983417B2 (en) | 2012-01-03 | 2015-03-17 | Silicon Laboratories Inc. | Low-cost receiver using integrated inductors |
| US8725103B2 (en) | 2012-01-03 | 2014-05-13 | Silicon Laboratories Inc. | Receiver including a tracking filter |
| US9705478B2 (en) * | 2013-08-01 | 2017-07-11 | Qorvo Us, Inc. | Weakly coupled tunable RF receiver architecture |
| US12224096B2 (en) | 2013-03-15 | 2025-02-11 | Qorvo Us, Inc. | Advanced 3D inductor structures with confined magnetic field |
| US9899133B2 (en) | 2013-08-01 | 2018-02-20 | Qorvo Us, Inc. | Advanced 3D inductor structures with confined magnetic field |
| US9294045B2 (en) | 2013-03-15 | 2016-03-22 | Rf Micro Devices, Inc. | Gain and phase calibration for closed loop feedback linearized amplifiers |
| US9774485B2 (en) * | 2014-05-16 | 2017-09-26 | Qualcomm Incorporated | Multiplex modules for carrier aggregation receivers |
| US20150358041A1 (en) * | 2014-06-06 | 2015-12-10 | Qualcomm Incorporated | Calibration and tuning for a tunable filter having adjustable inductance and capacitance |
| US10390343B2 (en) | 2014-06-23 | 2019-08-20 | Qualcomm Incorporated | Carrier aggregation diversity antenna module with integrated LNA banks |
| 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 |
| US12483449B2 (en) * | 2023-01-31 | 2025-11-25 | Nxp Usa, Inc. | Passive equalizer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6978125B2 (en) * | 2001-07-05 | 2005-12-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatus for tuning pre-selection filters in radio receivers |
| GB0117578D0 (en) * | 2001-07-19 | 2001-09-12 | Zarlink Semiconductor Ltd | Tuner |
| US7187913B1 (en) * | 2002-01-25 | 2007-03-06 | Sige Semiconductor Inc. | Integrated circuit tuner with broad tuning range |
| US7336939B2 (en) * | 2003-05-21 | 2008-02-26 | Broadcom Corporation | Integrated tracking filters for direct conversion and low-IF single conversion broadband filters |
| KR100548130B1 (ko) * | 2004-02-21 | 2006-02-02 | 삼성전자주식회사 | 광대역 튜너블 대역통과필터 및 이를 이용한 다중밴드광대역 튜너블 대역통과필터 |
| US7512392B2 (en) * | 2004-08-12 | 2009-03-31 | Skyworks Solutions, Inc. | System for adaptively filtering a received signal in a wireless receiver |
-
2008
- 2008-11-06 KR KR1020080109981A patent/KR101454487B1/ko not_active Expired - Fee Related
- 2008-12-29 US US12/344,920 patent/US8103233B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101350583B1 (ko) * | 2012-05-31 | 2014-01-13 | 삼성전기주식회사 | 방송 수신기에서의 채널 튜닝 장치 및 방법 |
| KR101365311B1 (ko) * | 2012-07-31 | 2014-02-19 | 삼성전기주식회사 | 적응형 필터 및 적응형 필터링 방법 |
| CN115085744A (zh) * | 2021-03-12 | 2022-09-20 | 瑞昱半导体股份有限公司 | 发射器 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101454487B1 (ko) | 2014-11-03 |
| US8103233B2 (en) | 2012-01-24 |
| US20090176467A1 (en) | 2009-07-09 |
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