Loop antenna with transmission line feed

Details Loop antenna with transmission line feed Loop antenna with transmission line feed

1989-01-13

1992-05-12

Wimer, Michael C.

Communications: radio wave antennas

Antennas

High frequency type loops

343702, 343848, H01Q 700

Patent

active

051131960

ABSTRACT:
A loop antenna includes a circuit board having a ground plane layer. A formed loop is located on one side of the circuit board and a transmission line is located on the opposite side of the circuit board. Capacitors interconnect the ends of the formed loop and the transmission line. The transmission line is a microstrip formed by the ground plane layer in a microstrip portion.
The circuit board includes RF circuitry that is located on the side of the circuit board opposite to the transmission line so that the ground plane shields the circuitry from the transmission line.

REFERENCES:
patent: 2578154 (1951-12-01), Shanklin
patent: 3680127 (1972-07-01), Richard
patent: 4506267 (1985-03-01), Harmuth
patent: 4625212 (1986-11-01), Oda et al.
patent: 4814776 (1989-03-01), Caci et al.
patent: 4862181 (1989-08-01), Ponce de Leon
QST, Jun. 1986, vol. LXX No. 6, "Small, High Efficiency Loop Antennas" pp. 33-36.

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