GB938014A - Improvements in or relating to receiving circuits - Google Patents

Improvements in or relating to receiving circuits

Info

Publication number
GB938014A
GB938014A GB2430760A GB2430760A GB938014A GB 938014 A GB938014 A GB 938014A GB 2430760 A GB2430760 A GB 2430760A GB 2430760 A GB2430760 A GB 2430760A GB 938014 A GB938014 A GB 938014A
Authority
GB
United Kingdom
Prior art keywords
transformer
relating
july
ratio
receiving circuits
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.)
Expired
Application number
GB2430760A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB938014A publication Critical patent/GB938014A/en
Expired legal-status Critical Current

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
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

938,014. Image-frequency rejection circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 12, 1960 [July 15, 1959], No. 24307/60. Class 40 (8). An aerial 1 is coupled to the base-emitter input circuit of a transistor 8 by means of a tuned transformer 10, 7 and a capacitance 4, the ratio of the turns of the transformer being equal to (within 20%) the ratio between capacitances 4 and 5, the latter being connected across the base bias resistor 9. The circuit is designed to suppress the image frequency of the incoming signal. The primary 3 of the transformer may include an aerial rod 10.
GB2430760A 1959-07-15 1960-07-12 Improvements in or relating to receiving circuits Expired GB938014A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN16979A DE1098048B (en) 1959-07-15 1959-07-15 Receive circuit

Publications (1)

Publication Number Publication Date
GB938014A true GB938014A (en) 1963-09-25

Family

ID=7340303

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2430760A Expired GB938014A (en) 1959-07-15 1960-07-12 Improvements in or relating to receiving circuits

Country Status (2)

Country Link
DE (1) DE1098048B (en)
GB (1) GB938014A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179612B (en) * 1961-12-12 1964-10-15 Telefunken Patent Circuit arrangement for coupling an antenna to a transistor receiver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE932685C (en) * 1953-10-08 1955-09-05 Loewe Opta Ag Band filter input circuit for radio sets with ferrite rod antenna

Also Published As

Publication number Publication date
DE1098048B (en) 1961-01-26

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