p‐i‐n diode phase shifter in waveguide structure

Abstract

depending on the mode change, and therefore, the optimum operation of a PA can be achieved. In addition, low insertion loss performance can be obtained for both HP and LP mode operations. CONCLUSIONIn this article, a reconfigurable monolithic step-up autotransformer is presented and analyzed using a nonideal transformer model. In addition, a complete model for the reconfigurable step-up autotransformer has been developed for a silicon substrate case. To verify its reconfigurable operation and modeling method, the proposed reconfigurable autotransformer was implemented using a standard 65-nm CMOS process. The modeled responses show a good agreement with the measured results. The 50-X load is transformed into 3.28 X in HP mode operation, and it is transformed into 12.26 X in LP mode operation at 0.9 GHz. The insertion loss in HP mode operation is 21.424 dB, and that in LP mode operation is 20.706 dB at 0.9 GHz. Using the proposed reconfigurable transformer, the efficiency performance of LP mode operation of a PA can be improved.ABSTRACT: A calculation procedure is proposed to design the p-i-n diode phase shifter based on the waveguide transmission line. The laboratory sample of five-bit phase shifter designed using the proposed procedure was fabricated and measured at 32-36 GHz. It provides the following phase shifts bits: 11 , 22 , 45 , 90 , 180 .

A Novel High-Power Rotary Waveguide Phase Shifter Based on Circular Polarizers

“…According to the implementation method, microwave phase shifters can be divided into non-mechanical and mechanical types. The most representative non-mechanical phase shifters include ferrite [4][5][6], PIN diodes [7,8], and dielectric-loaded phase shifters [9,10]. Due to limitations in the working mechanism and the breakdown threshold of dielectric materials, the power-handling capacity of non-mechanical phase shifters is generally lower than megawatt levels, making them unsuitable for HPM applications.…”

The design of optically controlled phase shifter based on silicon photosensitivity

“…The conventional high power waveguide phase shifters are basically ferrite PSs, mechanical PSs, or electrically controlled PSs, including ferrite PSs, [1][2][3][4] dimension mechanically adjustable PSs, [5][6][7] and p-i-n diode waveguide PS. 8 The insertion loss of ferrite decreases the efficiency of the PS, and the power capacity is limited because of the breakdown of the ferrite material under the intense electromagnetic field. The switching speed of mechanical phase shifters is slow.…”

“…Microwave phase shifters (PSs) have been widely used in communication systems, radars, particle accelerators and so on. The conventional high power waveguide phase shifters are basically ferrite PSs, mechanical PSs, or electrically controlled PSs, including ferrite PSs, dimension mechanically adjustable PSs, and p‐i‐n diode waveguide PS . The insertion loss of ferrite decreases the efficiency of the PS, and the power capacity is limited because of the breakdown of the ferrite material under the intense electromagnetic field.…”