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Professor Dr.-Ing.

Heinz Lindenmeier

Born: 23 September 1939, Munich

"You must have the courage to believe that it is always possible to invent something new."

Lindenmeier applied for more than 150 patents at the German Patent and Trade Mark Office, the majority of them in the field of antenna technology.

High frequency modulator and receiving antennas

Lindenmeier studied electrical engineering and telecommunications in Munich. As early as 1962, during his studies, he invented a new high frequency modulator, for which he obtained a patent later.
He wrote his doctoral thesis on "short, active receiving antennas" at the Institute for High Frequency Engineering of Munich Technical University. Between 1964 and 1978, he was a scientist at Munich Technical University. His teaching and research focused on electronic receiving antennas and boundary value problems in antenna technology. Lindenmeier's research resulted in the development of an active miniature antenna for radio reception in the car. In 1969, it was presented at the radio and television exhibition, as the first electronic car antenna on the world market. This work was the basis for the development of integral antennas for cars, especially integrated window antennas.

Telecommunications in the car

Since 1978, Lindenmeier has held the chair for high frequency technology and mobile communications at the military Bundeswehr University in Munich. His field of research focuses on antenna diversity, active receiving antennas and radio and satellite antennas, particularly for telecommunications in cars.

Antenna diversity systems

eliminate interference caused by multipath propagation of electromagnetic waves - particularly with regard to moving vehicles. "Antenna diversity systems consist of several individual antennas and a processor which selects the signal from that antenna whose received signal is strongest at any given instant. This signal is then switched through to the receiver so that the above-mentioned temporary and sudden interference can be eliminated. System capacity increases with the number of independent antennas. Electronic receiving antennas (mostly in windows) allow the design of such inconspicuous multiple antenna systems in cars." (source H.L.)

Lindenmeier's research findings in this field are applied worldwide, for example, for the VHF radio reception in cars.

The following quotation from one of Lindenmeier's lectures explains the interaction of research and demand: "Nobody wants to see car antennas, but everybody expects them to function well. This can be achieved by vehicle-integrated, almost invisible, active antennas with antenna diversity. Parts of the car themselves become components of the antenna."

Patent search

To find out more about Heinz Lindenmeier's patents, go to DEPATISnet

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