CH671856A5 - - Google Patents
Download PDFInfo
- Publication number
- CH671856A5 CH671856A5 CH357286A CH357286A CH671856A5 CH 671856 A5 CH671856 A5 CH 671856A5 CH 357286 A CH357286 A CH 357286A CH 357286 A CH357286 A CH 357286A CH 671856 A5 CH671856 A5 CH 671856A5
- Authority
- CH
- Switzerland
- Prior art keywords
- frequency
- receiver
- mixer
- oscillator
- mixing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
- H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B1/00—Details
- H03B1/04—Reducing undesired oscillations, e.g. harmonics
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/006—Functional aspects of oscillators
- H03B2200/007—Generation of oscillations based on harmonic frequencies, e.g. overtone oscillators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/006—Functional aspects of oscillators
- H03B2200/0078—Functional aspects of oscillators generating or using signals in quadrature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2202/00—Aspects of oscillators relating to reduction of undesired oscillations
- H03B2202/08—Reduction of undesired oscillations originated from the oscillator in circuit elements external to the oscillator by means associated with the oscillator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/009—Reduction of local oscillator or RF leakage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH357286A CH671856A5 (fr) | 1986-09-05 | 1986-09-05 | |
DE19873726181 DE3726181A1 (de) | 1986-09-05 | 1987-08-06 | Verfahren zum ueberlagerungsempfang eines modulierten signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH357286A CH671856A5 (fr) | 1986-09-05 | 1986-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH671856A5 true CH671856A5 (fr) | 1989-09-29 |
Family
ID=4258882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH357286A CH671856A5 (fr) | 1986-09-05 | 1986-09-05 |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH671856A5 (fr) |
DE (1) | DE3726181A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4126080C2 (de) * | 1990-08-08 | 2003-04-10 | Mitel Semiconductor Ltd | Mischersystem für einen Direktumsetzungsempfänger |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4125995A1 (de) * | 1991-06-08 | 1992-12-10 | Licentia Gmbh | Empfaengeranordnung |
DE69834875T2 (de) | 1997-03-12 | 2007-01-11 | Koninklijke Philips Electronics N.V. | Frequenzumsetzungsschaltung |
EP0900481B1 (fr) * | 1997-03-12 | 2006-06-14 | Koninklijke Philips Electronics N.V. | Circuit de conversion de frequences |
DE69930681T2 (de) * | 1998-01-23 | 2006-08-31 | Matsushita Electric Industrial Co., Ltd., Kadoma | Abstimmbarer Demodulator für digital modulierte RF-Signale |
JP2001008118A (ja) * | 1999-06-22 | 2001-01-12 | Alps Electric Co Ltd | デジタルテレビジョンチューナ |
TW508901B (en) * | 2000-02-02 | 2002-11-01 | Interdigital Tech Corp | Direct-conversion modulation with reduced local oscillator leakage |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2742578A1 (de) * | 1977-09-22 | 1979-04-05 | Hirschmann Radiotechnik | Frequenzumsetzer-einheit mit zwei mischstufen |
EP0062872A1 (fr) * | 1981-04-07 | 1982-10-20 | ANT Nachrichtentechnik GmbH | Système de réception |
GB2170368A (en) * | 1985-01-25 | 1986-07-30 | Nec Corp | Receiver for mobile communication systems |
-
1986
- 1986-09-05 CH CH357286A patent/CH671856A5/de not_active IP Right Cessation
-
1987
- 1987-08-06 DE DE19873726181 patent/DE3726181A1/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2742578A1 (de) * | 1977-09-22 | 1979-04-05 | Hirschmann Radiotechnik | Frequenzumsetzer-einheit mit zwei mischstufen |
EP0062872A1 (fr) * | 1981-04-07 | 1982-10-20 | ANT Nachrichtentechnik GmbH | Système de réception |
GB2170368A (en) * | 1985-01-25 | 1986-07-30 | Nec Corp | Receiver for mobile communication systems |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4126080C2 (de) * | 1990-08-08 | 2003-04-10 | Mitel Semiconductor Ltd | Mischersystem für einen Direktumsetzungsempfänger |
Also Published As
Publication number | Publication date |
---|---|
DE3726181A1 (de) | 1988-03-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |