H - Electricity – 03 – K
Patent
H - Electricity
03
K
328/51, 328/9
H03K 21/00 (2006.01) H03B 19/18 (2006.01) H03B 19/05 (2006.01)
Patent
CA 1105574
ABSTRACT OF THE DISCLOSURE Frequency division of microwave signals may be done using hetero- dyne conversion but there are limits to the ultimate instantaneous band- with that can be down-converted using this method ant any frequency aberra- tions of the local oscillator show up at the output. It is also known to down-converst microwave signals by using a varactor divide-by-two system. However, to divide by factors greater than two, these dividers must be cascaded which results in losses that must be compensated by amplifiers. The present invention alleviates the foregoing problems by providing a single- stage analog microwave frequency divider which will divide microwave sig- nals by four. The divider comprises a substrate having an input micro- strip transmission line capacitively coupled to a resonator formed of first snt second spaced apart parallel microstrip transmission lines of pre- determined length. One end of each of these lines are joined together by a transverse microstrip transmission line and the other end of each of these lines is connected to substrate ground via an associated varactor tiode. The first and second microstrip transmission lines are electromag- netically coupled to third and fourth microstrip transmission lines and the third and fourth microstrip transmission lines are connected in series to a stripline balun comprising an output of the divider.
310453
Her Majesty The Queen In Right Of Canada As Represented By The M
Smart & Biggar
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