Abstract: The invention discloses a continuously adjustable analog phase shifter, comprising N series-connected lumped phase shift units, with N?1, where the ith lumped phase shift unit is a high-pass lumped phase shift unit or a low-pass lumped phase shift unit, with 1?i?N. The invention adopts a lumped phase shift unit, and utilizes the advantage of small size of the lumped parametric circuit, thereby allowing the phase shifter to have a compact structure, small area, low cost and convenient integration. The lumped phase shift units in the invention may be selected as all high-pass lumped phase shift units or low-pass lumped phase shift units as appropriate, thereby having a flexible circuit structure that can meet the requirements at various operation frequencies. The lumped phase shift units in the invention may be selected to take the form of series-connected high-pass lumped phase shift unit and low-pass lumped phase shift unit, thereby permitting a wider bandwidth.

Abstract: The present invention discloses an ultra wide band fixed phase shifter based on a capacitive load, which includes N physically separated phase shift units, and each phase shift unit includes an orthocoupler, first and second transmission lines, and first and second capacitive loads, wherein the orthocoupler includes an input end, a coupling end, a direct-connection end and an isolation end, one end of the first transmission line serves as a signal input end of the phase shift unit and the other end is connected with the input end of the orthocoupler, one end of the second transmission line serves as a signal output end of the phase shift unit and the other end is connected with the isolation end of the orthocoupler; one end of the first capacitive load is connected with the coupling end of the orthocoupler and the other end is grounded; one end of the second capacitive load is connected with the direct-connection end of the orthocoupler and the other end is grounded.

Abstract: The present invention discloses an ultra wide band fixed phase shifter based on a capacitive load, which includes N physically separated phase shift units, and each phase shift unit includes an orthocoupler, first and second transmission lines, and first and second capacitive loads, wherein the orthocoupler includes an input end, a coupling end, a direct-connection end and an isolation end, one end of the first transmission line serves as a signal input end of the phase shift unit and the other end is connected with the input end of the orthocoupler, one end of the second transmission line serves as a signal output end of the phase shift unit and the other end is connected with the isolation end of the orthocoupler; one end of the first capacitive load is connected with the coupling end of the orthocoupler and the other end is grounded; one end of the second capacitive load is connected with the direct-connection end of the orthocoupler and the other end is grounded.