ZA803058B - A h.f. receiving stage - Google Patents
A h.f. receiving stageInfo
- Publication number
- ZA803058B ZA803058B ZA00803058A ZA803058A ZA803058B ZA 803058 B ZA803058 B ZA 803058B ZA 00803058 A ZA00803058 A ZA 00803058A ZA 803058 A ZA803058 A ZA 803058A ZA 803058 B ZA803058 B ZA 803058B
- Authority
- ZA
- South Africa
- Prior art keywords
- receiving stage
- stage
- receiving
- 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
-
- 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
- H03D2200/0001—Circuit elements of demodulators
- H03D2200/0017—Intermediate frequency filter
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2921219A DE2921219C2 (de) | 1979-05-25 | 1979-05-25 | HF-Empfangsstufe für Fernsehgeräte |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA803058B true ZA803058B (en) | 1981-05-27 |
Family
ID=6071684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00803058A ZA803058B (en) | 1979-05-25 | 1980-05-22 | A h.f. receiving stage |
Country Status (5)
Country | Link |
---|---|
US (1) | US4313222A (it) |
DE (1) | DE2921219C2 (it) |
FR (1) | FR2457607A1 (it) |
IT (1) | IT1130651B (it) |
ZA (1) | ZA803058B (it) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4380828A (en) * | 1981-05-26 | 1983-04-19 | Zenith Radio Corporation | UHF MOSFET Mixer |
HU193510B (en) * | 1981-09-01 | 1987-10-28 | Gyoergy Veisz | Four-terminal filter arrangement |
US6061551A (en) * | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
US7515896B1 (en) | 1998-10-21 | 2009-04-07 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
US7039372B1 (en) * | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6879817B1 (en) * | 1999-04-16 | 2005-04-12 | Parkervision, Inc. | DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
US6853690B1 (en) * | 1999-04-16 | 2005-02-08 | Parkervision, Inc. | Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments |
US7110435B1 (en) * | 1999-03-15 | 2006-09-19 | Parkervision, Inc. | Spread spectrum applications of universal frequency translation |
US7110444B1 (en) | 1999-08-04 | 2006-09-19 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations |
US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
US7693230B2 (en) | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
US8295406B1 (en) | 1999-08-04 | 2012-10-23 | Parkervision, Inc. | Universal platform module for a plurality of communication protocols |
US7010286B2 (en) * | 2000-04-14 | 2006-03-07 | Parkervision, Inc. | Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
US7554508B2 (en) | 2000-06-09 | 2009-06-30 | Parker Vision, Inc. | Phased array antenna applications on universal frequency translation |
US7010559B2 (en) * | 2000-11-14 | 2006-03-07 | Parkervision, Inc. | Method and apparatus for a parallel correlator and applications thereof |
US7454453B2 (en) * | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
US7072427B2 (en) * | 2001-11-09 | 2006-07-04 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
DE10163181A1 (de) * | 2001-12-21 | 2003-07-10 | Bsh Bosch Siemens Hausgeraete | Umsteuereinrichtung, insbes. für eine Geschirrspülmaschine |
US7460584B2 (en) * | 2002-07-18 | 2008-12-02 | Parkervision, Inc. | Networking methods and systems |
US7379883B2 (en) | 2002-07-18 | 2008-05-27 | Parkervision, Inc. | Networking methods and systems |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2654836A (en) * | 1952-04-24 | 1953-10-06 | Rca Corp | Converter circuit |
DE966146C (de) * | 1953-03-14 | 1957-07-11 | Telefunken Gmbh | Selbstschwingende Mischstufe mit additiver Mischung |
US3226665A (en) * | 1960-08-03 | 1965-12-28 | Marelli Lenkurt S P A | Transmission line transformer |
US3299384A (en) * | 1964-07-01 | 1967-01-17 | Ibm | Wide-band transformer having neutralizing winding |
SE400850B (sv) * | 1977-03-25 | 1978-04-10 | Klostermark Bernt | Hogfrekvenstransformator |
-
1979
- 1979-05-25 DE DE2921219A patent/DE2921219C2/de not_active Expired
-
1980
- 1980-04-15 FR FR8008441A patent/FR2457607A1/fr active Granted
- 1980-05-12 US US06/149,028 patent/US4313222A/en not_active Expired - Lifetime
- 1980-05-22 ZA ZA00803058A patent/ZA803058B/xx unknown
- 1980-05-22 IT IT22252/80A patent/IT1130651B/it active
Also Published As
Publication number | Publication date |
---|---|
DE2921219A1 (de) | 1980-11-27 |
IT8022252A0 (it) | 1980-05-22 |
FR2457607A1 (fr) | 1980-12-19 |
DE2921219C2 (de) | 1986-12-04 |
US4313222A (en) | 1982-01-26 |
IT1130651B (it) | 1986-06-18 |
FR2457607B3 (it) | 1982-03-05 |
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