EP1132995A1 - Symmetrierglied - Google Patents
Symmetrierglied Download PDFInfo
- Publication number
- EP1132995A1 EP1132995A1 EP01301686A EP01301686A EP1132995A1 EP 1132995 A1 EP1132995 A1 EP 1132995A1 EP 01301686 A EP01301686 A EP 01301686A EP 01301686 A EP01301686 A EP 01301686A EP 1132995 A1 EP1132995 A1 EP 1132995A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lines
- line
- connection gate
- ground potential
- symmetrical
- 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
Links
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
Definitions
- the present invention relates to a balun, consisting of side by side, coupled planar lines with an asymmetrical connection gate and two symmetrical connection gates.
- Symmetry elements make transitions in a known manner between symmetrical and asymmetrical Transmission lines. From a symmetrical line one speaks when a signal transmitted via it does not Has ground as a reference potential. Against is one unbalanced transmission line on one side with ground connected so that a signal transmitted over it is ground as a reference potential. Symmetry links of this type e.g. at the inputs and outputs of double push-pull mixers or modulators etc. used.
- balun One set out at the outset, made up of four coupled together planar lines existing balun is from the DE 197 29 761 A1 known.
- This balun consists of two 3db couplers, each with two over a length of ⁇ / 4 coupled planar lines.
- They who Both couplers are in the form of a bipolar bandpass filter trained, one in an open Circuit configuration and the other in one short-circuit configuration is configured.
- the two quarter-wave couplers are thus together connected that a 3-port symmetry arises, the one connection for unbalanced signals and two Has connections for balanced signals.
- Line couplers in an open circuit configuration are the opposite ends of the two lines idling. Another end of the two lines serves as symmetrical connection.
- the opposite end of the other line is short-circuited with one end of the Circuit configuration executed line coupler connected.
- Two of this line coupler are each other opposite ends of the two leads with ground contacted, and another end of a line forms one another connection for balanced signals.
- the two interconnected ends of the two Line couplers form the connection gate for asymmetrical Signals.
- the invention has for its object a space-saving and as easy to manufacture as possible specify.
- Such a balun is according to the features of Claim 1 constructed as follows. There are three side-by-side, coupled planar lines available. One end of the middle of the three lines forms the asymmetrical connection gate, the ones lying next to it Ends of the two outer lines at ground potential lie. The other two ends of the outer leads are also at ground potential, and the middle one Line ends there with an idle. Each of the two outer lines is interrupted at half the length and at this point has two connections for a symmetrical Connection gate open. This creates a broadband Power divider and a transition from an unbalanced on two symmetrical transmission lines. This Balun has a wide bandwidth and is very low loss. There is also a high level of decoupling between the two symmetrical connection gates.
- the entire coupling length corresponds of the three lines in about half the middle Operating wavelength of the balun.
- the balun shown in the drawing exists of three inductively coupled units running side by side planar lines 1, 2 and 3, which are therefore in one curved shape are guided to the extent of the To keep the balun as low as possible.
- the whole Coupling length of the three lines 1, 2 and 3, which together on are arranged on a substrate side corresponds approximately to that half the average operating wavelength of the balun.
- One end 4 of the middle line 3 of the three lines 1, 2, 3 forms the asymmetrical connection gate TU.
- the next to this End 4 of the middle line 3 lying ends of the two outer lines 1 and 2 are at ground potential.
- the Connection of these line ends with one on the ground lines arranged opposite the substrate side is in a known manner by means of vias 5 and 6th realized in the substrate.
- the two other ends of the outer lines 1 and 2 are also placed on ground potential.
- the ends are running both outer lines 1 and 2 at one contact to Establish ground surface on the back of the substrate Via 7 together.
- the middle line 3 ends here with an idle.
- the two outer cables are at half the coupling length 1 and 2 interrupted.
- the one through this interruption emerging line ends 8 and 9 of the first outer Line 1 form the first symmetrical connection gate TS1, and caused by the interruption of the second outer line 2 resulting line ends 10 and 11 form the second symmetrical connection gate TS2.
- the balun described above represents one very broadband 3 dB power divider, both of which Connection gates TS1 and TS2 a high mutual isolation have.
- the on the symmetrical connection gates TS1 and TS2 decoupled signals have almost the same amplitude and phase.
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Carbon And Carbon Compounds (AREA)
- Semiconductor Integrated Circuits (AREA)
- Waveguides (AREA)
Abstract
Description
Claims (2)
- Symmetrierglied, bestehend aus nebeneinander verlaufenden, gekoppelten planaren Leitungen (1, 2, 3) mit einem unsymmetrischen Anschlußtor (TU) und zwei symmetrischen Anschlußtoren (TS1 und TS2), dadurch gekennzeichnet,dass drei nebeneinander verlaufende Leitungen (1, 2, 3) vorhanden sind,dass ein Ende (4) der mittleren (3) der drei Leitungen (1, 2, 3) das unsymmetrische Anschlußtor (TU) bildet, wobei die daneben liegenden Enden der beiden äußeren Leitungen auf Massepotential (5, 6) liegen,dass die beiden anderen Enden der äußeren Leitungen (1, 2) ebenfalls auf Massepotential (7) liegen und die mittlere Leitung (3) dort mit einem Leerlauf endet,und dass jede der beiden äußeren Leitungen (1, 2) auf der halben Länge unterbrochen ist und an dieser Stelle zwei Anschlüsse (8, 9, 10, 11) für ein symmetrisches Anschlußtor (TS1, TS2) aufweist.
- Symmetrierglied nach Anspruch 1, dadurch gekennzeichnet, dass die Koppellänge der drei Leitungen (1, 2, 3) in etwa der halben mittleren Betriebswellenlänge des Symmetriergliedes entspricht.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10008551A DE10008551A1 (de) | 2000-02-24 | 2000-02-24 | Symmetrierglied |
| DE10008551 | 2000-02-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1132995A1 true EP1132995A1 (de) | 2001-09-12 |
| EP1132995B1 EP1132995B1 (de) | 2006-09-06 |
Family
ID=7632178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01301686A Expired - Lifetime EP1132995B1 (de) | 2000-02-24 | 2001-02-23 | Symmetrierglied |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1132995B1 (de) |
| AT (1) | ATE339017T1 (de) |
| DE (2) | DE10008551A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1158598B1 (de) * | 2000-05-26 | 2004-11-17 | Marconi Communications GmbH | Anordnung zum Transformieren von Übertragungsleitungsstrukturen und Mischer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5428838A (en) * | 1993-07-13 | 1995-06-27 | Trw Inc. | Diode mixer implemented in a planar monolithic IC |
-
2000
- 2000-02-24 DE DE10008551A patent/DE10008551A1/de not_active Ceased
-
2001
- 2001-02-23 DE DE50110912T patent/DE50110912D1/de not_active Expired - Lifetime
- 2001-02-23 AT AT01301686T patent/ATE339017T1/de not_active IP Right Cessation
- 2001-02-23 EP EP01301686A patent/EP1132995B1/de not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5428838A (en) * | 1993-07-13 | 1995-06-27 | Trw Inc. | Diode mixer implemented in a planar monolithic IC |
Non-Patent Citations (1)
| Title |
|---|
| SCHELLENBERG J ET AL: "LOW-LOSS, PLANAR MONOLITHIC BALUNS FOR K/KA-BAND APPLICATIONS", ANAHEIM, CA, JUNE 13 - 19, 1999,NEW YORK, NY: IEEE,US, 13 June 1999 (1999-06-13), pages 1733 - 1736, XP000890692, ISBN: 0-7803-5136-3 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1158598B1 (de) * | 2000-05-26 | 2004-11-17 | Marconi Communications GmbH | Anordnung zum Transformieren von Übertragungsleitungsstrukturen und Mischer |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50110912D1 (de) | 2006-10-19 |
| ATE339017T1 (de) | 2006-09-15 |
| EP1132995B1 (de) | 2006-09-06 |
| DE10008551A1 (de) | 2001-08-30 |
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