DE6752498U - PERSONAL CALL RECEIVER WITH CAPACITIVE ANTENNA - Google Patents
PERSONAL CALL RECEIVER WITH CAPACITIVE ANTENNAInfo
- Publication number
- DE6752498U DE6752498U DE19686752498 DE6752498U DE6752498U DE 6752498 U DE6752498 U DE 6752498U DE 19686752498 DE19686752498 DE 19686752498 DE 6752498 U DE6752498 U DE 6752498U DE 6752498 U DE6752498 U DE 6752498U
- Authority
- DE
- Germany
- Prior art keywords
- antenna
- call receiver
- personal call
- capacitive antenna
- capacitive
- 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
Links
Landscapes
- Structure Of Receivers (AREA)
- Mobile Radio Communication Systems (AREA)
- Support Of Aerials (AREA)
Description
TSLEFUNKSN Patentverwertungsgesel Isclaax tTSLEFUNKSN Patent utilization company Isclaax t
Ulm / Donau Elisabe-fchensiraße 3Ulm / Danube Elisabe-fchensiraße 3
Hannover, den 28. 5. 196£ PE/PT-Pi/Wie GmW 650Hanover, May 28, 196 £ PE / PT-Pi / Wie GmW 650
~\ Personenrufempfänger mit kapazitiver Antenne ~ \ Paging receiver with capacitive antenna
In Empfängern für Personenrufanlagen mit drahtloser Übertragung mit elektromagnetischen Wellen verwendet man auf dem UKW-Gebiet im allgemeinen eine abgestimmte induktive Antenne als Empfangsantenne. Auf dem UHF-Gebiet nimmt eine solche Antenne jedoch zu wenig Empfangsenergie auf, weil bei gegebener Kapazität die zugehörige Induktivität zu klein ist. Deshalb ist dann eine kapazitive Empfangsantenne günstiger- Wegen der kleinen Abmessungen der -N Empfänger muß man jedoch die Antenne, vorzugsweise eine Dipolantenne, räumlich verkürzen, indem sie am freien Ende, bzw. an den freien Enden kapazitiv belastet wird und/oder indem in der Nähe des Pußpunktes der Antenne Spulen eingeschaltet werden. Wegen Platzmangels sind diese Maßnahmen jedoch schwer durchführbar.In receivers for paging systems with wireless transmission with electromagnetic waves, a tuned inductive antenna is generally used as the receiving antenna in the VHF area. In the UHF area, however, such an antenna does not receive enough energy because the associated inductance is too small for a given capacity. Because of the small dimensions of the N receiver, however, the antenna, preferably a dipole antenna, must be shortened spatially by loading it capacitively at the free end or at the free ends and / or by using the Coils are switched on near the point of the antenna. However, due to a lack of space, these measures are difficult to implement.
Gemäß der Neuerung besteht das im wesentlichen aus Kunststoff hergestellte Gehäuse wenigstens an dem einen Ende aus einerAccording to the innovation, this consists essentially of plastic manufactured housing at least at one end from a
~ 2 - GmW 650~ 2 - GmW 650
elektrisch leitenden Kappe, aie mit dem freien Ende der Antenne verbunden ist. Es werden also die Kappen, die einen Teil des Gehäuses bilden, zugleich als kapazitive Belastungen ausgenutzt· Die Kappen können aus Metall oder aus mit einer metallischen Schicht versehenem Kunststoff bestehen.electrically conductive cap, aie with the free end of the antenna connected is. So the caps, which form part of the housing, are also used as capacitive loads. The caps can be made of metal or made with a metallic one Layer provided plastic exist.
Die Zeichnung zeigt ein Ausfuhrungsbsispiel der Neuerung, Das Gehäuse des Empfängers besteht aus zwei Schalen 1 und 2 atts KunststcTr, von denen die Schale 1 die Einzelteile des Empfängers trägt {nicht dargestellt). Nach dem Aufeinandersetzen der beiden Schalen werden seitlich die Kappen 3 und 4 aufgeschoben, die die Schalen 1 und 2 zusammenhalten. Die elektrisch leitenden Kappen werden dann siit den Antennendrähten 5 und 6 verbunden. Gegebenenfalls können die gestrichelt eingezeichneten Spulen eingefügt werden.The drawing shows an exemplary embodiment of the innovation, Das Housing of the receiver consists of two shells 1 and 2 atts KunststcTr, of which the shell 1 carries the individual parts of the receiver (not shown). After putting the two shells on top of each other the caps 3 and 4, which hold the shells 1 and 2 together, are pushed on to the side. The electrically conductive caps are then connected to antenna wires 5 and 6. If necessary, can the coils shown in dashed lines are inserted.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19686752498 DE6752498U (en) | 1968-06-01 | 1968-06-01 | PERSONAL CALL RECEIVER WITH CAPACITIVE ANTENNA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19686752498 DE6752498U (en) | 1968-06-01 | 1968-06-01 | PERSONAL CALL RECEIVER WITH CAPACITIVE ANTENNA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE6752498U true DE6752498U (en) | 1969-03-06 |
Family
ID=6592760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19686752498 Expired DE6752498U (en) | 1968-06-01 | 1968-06-01 | PERSONAL CALL RECEIVER WITH CAPACITIVE ANTENNA |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE6752498U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983003716A1 (en) | 1982-04-20 | 1983-10-27 | Schwanitz, Manfred | Antenna circuit for miniature radio receiver |
| DE3234601A1 (en) * | 1982-09-17 | 1984-03-22 | Siemens AG, 1000 Berlin und 8000 München | Arrangement for marking persons and objects |
-
1968
- 1968-06-01 DE DE19686752498 patent/DE6752498U/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983003716A1 (en) | 1982-04-20 | 1983-10-27 | Schwanitz, Manfred | Antenna circuit for miniature radio receiver |
| DE3234601A1 (en) * | 1982-09-17 | 1984-03-22 | Siemens AG, 1000 Berlin und 8000 München | Arrangement for marking persons and objects |
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