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
GB1325/21A
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.)
Telefunken AG
Original Assignee
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken Gesellschaft fuer Drahtlose Telegraphie mbHfiledCriticalTelefunken Gesellschaft fuer Drahtlose Telegraphie mbH
Publication of GB157404ApublicationCriticalpatent/GB157404A/en
H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Landscapes
Near-Field Transmission Systems
(AREA)
Abstract
157,404. Ges f³r Drahtlose Telegraphie. Dec. 2, 1919, [Convention date]. Directive signalling; aerials.-In a directive receiving system employing a rotating frame, the frame consists of the two oppositely wound coils 1, 2 connected as shown to a tuning condenser 5 and a receiving set 6. With this arrangement, the effects of the electrical field in the two coils, when the frame is in its minimum position for the electromagnetic field, neutralize each other and a sharp minimum position is obtained.
GB1325/21A1919-12-021921-01-10Improvements in wireless receiving systems
ExpiredGB157404A
(en)
The reciprocity principle in radio propagation(Reciprocity theorems in electromagnetic theory concerned with radio transmitting and receiving point interchange for electric dipole sources)