DE4034643A1 - Phase shifter for VHF, UHF and microwave signals - uses capacitor and blind resistance element respectively connected in series with one capacitor of dual conductor system - Google Patents

Phase shifter for VHF, UHF and microwave signals - uses capacitor and blind resistance element respectively connected in series with one capacitor of dual conductor system

Info

Publication number
DE4034643A1
DE4034643A1 DE19904034643 DE4034643A DE4034643A1 DE 4034643 A1 DE4034643 A1 DE 4034643A1 DE 19904034643 DE19904034643 DE 19904034643 DE 4034643 A DE4034643 A DE 4034643A DE 4034643 A1 DE4034643 A1 DE 4034643A1
Authority
DE
Germany
Prior art keywords
conductor
capacitor
phase shifter
series
vhf
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.)
Granted
Application number
DE19904034643
Other languages
German (de)
Other versions
DE4034643C2 (en
Inventor
Ralf Dipl Ing Herzberg
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.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co KG
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 Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Priority to DE19904034643 priority Critical patent/DE4034643A1/en
Publication of DE4034643A1 publication Critical patent/DE4034643A1/en
Application granted granted Critical
Publication of DE4034643C2 publication Critical patent/DE4034643C2/de
Granted legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/18—Networks for phase shifting
    • H03H7/20—Two-port phase shifters providing an adjustable phase shift

Landscapes

  • Networks Using Active Elements (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)

Abstract

The phase shifter has a capacitor (C) and one conductor (L1) of a dual conductor system connected in series between the input (E) and output (A), the second conductor (L2) coupled to the input (E) via a series blind resistance element (X2) and connected to earth on the opposite side. A further blind resistance element (X1) is coupled between the junction of the capacitor (C) and the first conductor (L1) and earth. The capacitance value of the capacitor (C) and the inductance of the second conductor (L2) of the dual conductor system are defined by a give equation in terms of the frequency and the wave resistance. The two blind resistance elements (X1,X2) have the same resistance value. USE/ADVANTAGE - VHF, UHF and microwave signal shifter. Allows use of low-cost printed circuit.

Description

Die Erfindung betrifft einen Phasenschieber zum Verändern der Phasenlage eines Hochfrequenzsignals, insbesondere eines Mikrowellensignals.The invention relates to a phase shifter for changing the phase position of a high-frequency signal, in particular of a microwave signal.

Es ist bekannt, Phasenschieber aus Zirkulatoren mit an­ geschlossenen Blindwiderständen aufzubauen (Erich Pehl, Mikrowellentechnik, Band 1, Seite 235 bzw. Valvo: Einweg­ leitungen, Zirkulatoren, Phasenschieber, 1973) oder mit einem 3 dB-90°-Hybridkoppler und zwei damit verbundenen, gleichsinnig veränderbaren Blindwiderständen (Anaren:. Application of the 90°-Hybrid, 1979). Diesen bekannten Phasenschiebern ist der Nachteil gemeinsam, daß sie im Aufbau und im Abgleich relativ aufwendig und teuer sind.It is known to use phase shifters from circulators to build closed reactors (Erich Pehl, Microwave technology, Volume 1, page 235 or Valvo: Disposable lines, circulators, phase shifters, 1973) or with a 3 dB-90 ° hybrid coupler and two connected Reactive resistances that can be changed in the same direction (Anaren :. Application of the 90 ° Hybrid, 1979). This well-known Phase shifters have the disadvantage in common that they are in the Structure and in comparison are relatively complex and expensive.

Dieser Nachteil wird vermieden mit einem Phasenschieber laut Hauptanspruch. Eine vorteilhafte Weiterbildung ergibt sich aus dem Unteranspruch.This disadvantage is avoided with a phase shifter according to the main claim. An advantageous further development results itself from the subclaim.

Ein erfindungsgemäßer Phasenschieber kann sehr preiswert in gedruckter Schaltungstechnik aufgebaut werden und er ist auch sehr gut reproduzierbar. Der Platzbedarf ist minimal, vor allem für höhere Frequenzen im Mikro­ wellenbereich benötigt der Phasenschieber nur wenig Raum. Der erfindungsgemäße Phasenschieber ist ohne Kompensa­ tionsmaßnahmen relativ breitbandig, er liefert über etwa eine Oktave gute Ergebnisse für Eingangsanpassung und Amplitudenfrequenzgang. Das Zweileitersystem kann entweder als kurzes Koaxialleitungsstück zusammen mit den anderen wenigen Bauelementen auf der gedruckten Schaltungsplatte angebracht werden, es kann aber auch unmittelbar als gedruckte Schaltung aufgebaut werden.A phase shifter according to the invention can be very inexpensive be built up in printed circuit technology and  it is also very reproducible. The space requirement is minimal, especially for higher frequencies in the mic the phase shifter requires very little space. The phase shifter according to the invention is without compensation measures relatively broadband, it delivers about an octave good results for input matching and Amplitude frequency response. The two-wire system can either as a short coaxial line piece together with the others few components on the printed circuit board be attached, but it can also be used immediately printed circuit.

Die Erfindung wird im folgenden anhand einer schematischen Zeichnung an einem Ausführungsbeispiel näher erläutert.The invention is based on a schematic Drawing explained in more detail using an exemplary embodiment.

Die Figur zeigt das Prinzipschaltbild eines erfindungs­ gemäßen Phasenschiebers, bei dem zwischen Eingang E und Ausgang A die Reihenschaltung eines Kondensators C und des ersten Leiters L1 eines Zweileitersystems angeordnet ist. Der zweite Leiter L2 des Zweileitersystems liegt an seinem dem Ausgang A zugewandten Ende an Masse, sein anderes dem Eingang E zugewandtes Ende ist über einen Blindwiderstand X2 mit dem Eingang E verbunden. Zwischen dem Verbindungspunkt von Kondensator C und dem ersten Leiter L1 ist ein weiteres Blindwiderstandselement X1 gegen Masse angeschaltet. Die beiden Blindwiderstands­ elemente X1 und X2 sind gleich groß und gleichsinnig veränderbar, als Blindwiderstandselemente können Konden­ satoren oder Induktivitäten oder Kombinationen davon verwendet werden, vorzugsweise werden hierfür elektronisch abstimmbare Kapazitätsdioden benutzt.The figure shows the basic circuit diagram of a phase shifter according to the Invention, in which the series connection of a capacitor C and the first conductor L 1 of a two-wire system is arranged between input E and output A. The second conductor L 2 of the two-conductor system is connected to ground at its end facing the output A, its other end facing the input E is connected to the input E via a reactance X 2 . Another reactance element X 1 is connected to ground between the connection point of capacitor C and the first conductor L 1 . The two reactance elements X 1 and X 2 are the same size and can be changed in the same direction, as reactance elements capacitors or inductors or combinations thereof can be used, preferably electronically tunable capacitance diodes are used for this.

Die Bauelemente sind so bemessen, daß für die Mittenfre­ quenz fm des Betriebsfrequenzbereiches, in welchem der Phasenschieber betrieben werden soll, die in der Figur angegebene Beziehung gilt, wobei LM die Induktivität des zweiten Leiters L2 des Zweileitersystems ist. Bei dieser Bemessung bleibt bei gleichsinniger Änderung der Blindwiderstände X1 und X2 der Betrag des Eingangswider­ stands Ze und der Amplitudenfrequenzgang konstant, und die Phasenlage zwischen Eingangssignal und Ausgangssignal läßt sich in einem Frequenzbereich von über einer Oktave in einem weiten Bereich einstellen. Das am Eingang E ankommende Signal wird in zwei Signalanteile aufgeteilt, deren Betrag und Phase unterschiedlich sind. Die beiden Signalanteile werden durch die Blindwiderstände X1 und X2 und den Kondensator C so beeinflußt, daß bei ihrer Zusammenfassung mittels des Zweileitersystems am Ausgang A ein Signal zur Verfügung steht, das im Betrag dem Ein­ gangssignal entspricht, wenn man die normalen Bauteilver­ luste vernachlässigt, und das in der Phase um einen bestimmten Wert verschoben ist, dessen Größe vom Wert der Blindwiderstände X1 und X2 abhängt.The components are dimensioned such that for the Mittenfre frequency f m of the operating frequency range in which the phase shifter is to be operated, the relationship given in the figure applies, where L M is the inductance of the second conductor L 2 of the two-wire system. With this design, the amount of the input resistance Z e and the amplitude frequency response remains constant when the reactances X 1 and X 2 change in the same direction, and the phase relationship between the input signal and output signal can be set within a wide range in a frequency range of more than one octave. The signal arriving at input E is divided into two signal components, the magnitude and phase of which differ. The two signal components are influenced by the reactance resistors X 1 and X 2 and the capacitor C so that when combined by means of the two-wire system, a signal is available at output A which corresponds to the input signal if the normal component losses are neglected , and which is shifted in phase by a certain value, the size of which depends on the value of the reactances X 1 and X 2 .

Claims (2)

1. Phasenschieber, insbesondere für VHF, UHF und Mikro­ wellen-Signale gekennzeichnet durch folgende Merkmale:
  • a) zwischen Eingang (E) und Ausgang (A) ist die Reihen­ schaltung einer Kapazität (C) und des ersten Leiters (L1) eines Zweileitersystems angeordnet,
  • b) der zweite Leiter (L2) des Zweileitersystems liegt mit seinem dem Ausgang (A) zugewandten Ende an Masse und ist mit seinem anderen Ende in Reihe mit einem Blindwiderstandselement (X2) mit dem Eingang (E) verbunden,
  • c) zwischen dem Verbindungpunkt von Kapazität (C) und dem ersten Leiter (L1) des Zweileitersystems ist ein weiteres Blindwiderstandselement (X1) gegen Masse geschaltet,
  • d) die Kapazität (C) und die Induktivität (LM) des zweiten Leiters (L2) des Zweileitersystems sind nach folgender Beziehung bemessen: wobei Zo der Wellenwiderstand des Zweileitersystems und der des Gesamtsystems ist;
  • e) die beiden Blindwiderstandselemente (X1) und (X2) sind gleich groß und gleichsinnig veränderbar.
1. Phase shifter, in particular for VHF, UHF and micro wave signals characterized by the following features:
  • a) between the input (E) and output (A), the series circuit of a capacitor (C) and the first conductor (L 1 ) of a two-wire system is arranged,
  • b) the second conductor (L 2 ) of the two-conductor system is connected to ground with its end facing the output (A) and is connected at its other end in series with a reactance element (X 2 ) to the input (E),
  • c) a further reactance element (X 1 ) is connected to ground between the connection point of capacitance (C) and the first conductor (L 1 ) of the two-conductor system,
  • d) the capacitance (C) and the inductance (L M ) of the second conductor (L 2 ) of the two-conductor system are dimensioned according to the following relationship: where Z o is the characteristic impedance of the two-wire system and that of the overall system;
  • e) the two reactance elements (X 1 ) and (X 2 ) are of the same size and can be changed in the same direction.
2. Phasenschieber nach Anspruch 1, dadurch gekennzeichnet, daß er in gedruckter Schaltungstechnik aufgebaut ist.2. phase shifter according to claim 1, characterized characterized that he is in printed Circuitry is built.
DE19904034643 1990-10-31 1990-10-31 Phase shifter for VHF, UHF and microwave signals - uses capacitor and blind resistance element respectively connected in series with one capacitor of dual conductor system Granted DE4034643A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904034643 DE4034643A1 (en) 1990-10-31 1990-10-31 Phase shifter for VHF, UHF and microwave signals - uses capacitor and blind resistance element respectively connected in series with one capacitor of dual conductor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904034643 DE4034643A1 (en) 1990-10-31 1990-10-31 Phase shifter for VHF, UHF and microwave signals - uses capacitor and blind resistance element respectively connected in series with one capacitor of dual conductor system

Publications (2)

Publication Number Publication Date
DE4034643A1 true DE4034643A1 (en) 1992-05-14
DE4034643C2 DE4034643C2 (en) 1993-02-18

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DE19904034643 Granted DE4034643A1 (en) 1990-10-31 1990-10-31 Phase shifter for VHF, UHF and microwave signals - uses capacitor and blind resistance element respectively connected in series with one capacitor of dual conductor system

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Country Link
DE (1) DE4034643A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2031522A1 (en) * 1970-06-25 1971-12-30 Siemens Ag Time-of-flight equalizer for short electromagnetic waves

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2031522A1 (en) * 1970-06-25 1971-12-30 Siemens Ag Time-of-flight equalizer for short electromagnetic waves

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHMOLL, G.: Die Phasenbrücke. In: Funk- Technik, 1972, S.839-840 *

Also Published As

Publication number Publication date
DE4034643C2 (en) 1993-02-18

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