Patent
Variable attenuator using reflecting type constant phase diode
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TLDR
In this paper, the authors proposed to make the frequency characteristics broad and to attain miniaturization and low loss by constituting a stub near a diode with a short stub added to an open stub.Abstract:
PURPOSE:To make the frequency characteristics broad and to attain miniaturization and low loss, by constituting a stub near a diode with a short stub added to an open stub. CONSTITUTION:A high frequency signal inputted from a terminal 2a of a circulator 2 passes through a microstrip main line via a terminal 2b, is reflected at the diode 3, and passes again through the microstrip main line and the terminal 2b, and is outputted to a terminal 2c. The normalized admittance of the diode 3 under a bias is shown in a curve 7 of the Smith chart and the susceptance is constant as a curve 11. The conductance component is obtained as shown in a line segment 12 by adding the short stub 10 having l4 length to a position of the microstrip main line returned from the diode 3 by l3 along the main line.read more
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Axle type suspension device, and roll energy absorption method thereof
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