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EP0283074A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Microwave mixer

Assignee: Koninklijke Philips NV
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Filing: 1988-02-29
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Granted: —
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Expires: 2008-02-29
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Abstract

Abstract Translated from French Le mélangeur selon l'invention est du type à deux transistors (T1, T2) montés en série par une source S2 et un drain D1. Une grille G1 reçoit un signal radiofréquence RF et une grille G2 un signal d'oscillateur local LO. Des réseaux d'adaptation R1 et R2 sont prévus pour respectivement le signal RF et le signal LO. Un élément de réseau R3 placé à la sortie (drain D2 du transistor T2) ramène un court-circuit à la fréquence fLO d'oscillateur local. L'instabilité de l'entrée G2 du transistor T2 est compensée par un élément selfique L disposé entre le point commun à la source S2 et au drain D1 et le pôle de mode commun. The mixer according to the invention is of the type with two transistors (T1, T2) connected in series by a source S2 and a drain D1. A gate G1 receives a radio frequency signal RF and a gate G2 a local oscillator signal LO. Adaptation networks R1 and R2 are provided for the RF signal and the LO signal respectively. A network element R3 placed at the output (drain D2 of transistor T2) brings a short circuit to the frequency fLO of the local oscillator. The instability of the input G2 of the transistor T2 is compensated by a inductive element L disposed between the point common to the source S2 and to the drain D1 and the common mode pole.

Inventors

  • 👤 Ramesh Société Civile S.P.I.D. Pyndiah
  • 👤 Patrice Société Civile S.P.I.D. Gamand

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 18:51
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/06; H03D9/0658; H03D9/0675; H03D2200/00; H03D2200/0001; H03D2200/0025; H03D2200/0027; H03D7/00; H03D7/12; H03D7/125

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

EP0057480A1 Cited
EP0087841A1 Cited
US4592095A Cited

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