Microwave transformer

Details Microwave transformer Microwave transformer

H - Electricity

01

P

333/16, 333/24

H01P 5/10 (2006.01)

Patent

CA 1283464

ABSTRACT Microwave Transformer An improved microwave balun transformer providing an extension of operating frequency range particularly in conjunction with a cavity-backed spiral antenna. The balun cavity has a dipole extending between an unbalanced coax port and an opposite end wall, the dipole junction being connected to a balanced twin line. The improvement consists in effectively controlling the length of the cavity to make it closer to (two) quarter-wave stubs by inserting a frequency dependent reflector at each end of the dipole. At low frequencies the reflectors are transparent thus giving the full length of the cavity, while at high frequencies the reflectors reflect and effectively shorten the cavity.

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