Abstract:
A S/N enhancer using the magnetostatic wave signal is disclosed. The S/N enhancer comprises a balun coupler for dividing an input signal into a first and second signals having the same power, the second signal having the phase difference of 180 degree with respect to the first signal; a saturation magnetostatic wave filter for receiving the first signal output from the balun coupler, converting that into a magnetostatic wave signal, and converting the magnetostatic wave signal into a signal having a shape of the first signal, wherein a power of the magnetostatic wave signal is saturated if the first signal has a power of equal to or more than that of a noise signal; a linear magnetostatic wave filter for receiving the second signal from the balun coupler, converting that into a magnetostatic wave signal, and converting the magnetostatic wave signal into a signal having a shape of the second signal, wherein the received second signal is converted into the magnetostatic wave signal having an energy linear to a power of the input signal; and a power synthesizer for synthesizing respective signals output from the saturation magnetostatic wave filter and the linear magnetostatic wave filter.
Abstract:
A S/N enhancer using the magnetostatic wave signal is disclosed. The S/N enhancer comprises a balun coupler for receiving an first signal an d dividing two second signals having the same power and the phase difference of 180 degree; a saturation magnetostatic wave filter for receiving one of t he two second signals output from he balun coupler, converting that into a magnetostatic wave signal, and oppositely converting the magnetostatic wave signal, wherein the power of the magnetostatic wave signal is saturated if t he received second signal has the power of equal to and more than that of a noi se signal; a linear magnetostatic wave filter for receiving the other of the tw o second signals from the balun coupler, converting that into a magnetosatic wave signal, and oppositely converting the magnetostatic wave signal, wherein the received second signal is converted into the magnetostatic wave signal having an energy linear to the power of the input signal; and a power synthesizer for synthesizing the respective signals output from the saturati on magnetostatic wave filter and the linear magnetostatic wave filter. The S/N enhancer does not need phase shifter, and can be applied to a small-sized system that has a broadband and is used at a high power/a low power.
Abstract:
A S/N enhancer using the magnetostatic wave signal is disclosed. The S/N enhancer comprises a balun coupler for dividing an input signal into a first and second signals having the same power, the second signal having the phase difference of 180 degree with respect to the first signal; a saturation magnetostatic wave filter for receiving the first signal output from the balun coupler, converting that into a magnetostatic wave signal, and converting the magnetostatic wave signal into a signal having a shape of the first signal, wherein a power of the magnetostatic wave signal is saturated if the first signal has a power of equal to or more than that of a noise signal; a linear magnetostatic wave filter for receiving the second signal from the balun coupler, converting that into a magnetostatic wave signal, and converting the magnetostatic wave signal into a signal having a shape of the second signal, wherein the received second signal is converted into the magnetostatic wave signal having an energy linear to a power of the input signal; and a power synthesizer for synthesizing respective signals output from the saturation magnetostatic wave filter and the linear magnetostatic wave filter.
Abstract:
A S/N enhancer using the magnetostatic wave signal is disclosed. The S/N enhancer comprises a balun coupler for receiving an first signal an d dividing two second signals having the same power and the phase difference of 180 degree; a saturation magnetostatic wave filter for receiving one of t he two second signals output from he balun coupler, converting that into a magnetostatic wave signal, and oppositely converting the magnetostatic wave signal, wherein the power of the magnetostatic wave signal is saturated if t he received second signal has the power of equal to and more than that of a noi se signal; a linear magnetostatic wave filter for receiving the other of the tw o second signals from the balun coupler, converting that into a magnetosatic wave signal, and oppositely converting the magnetostatic wave signal, wherein the received second signal is converted into the magnetostatic wave signal having an energy linear to the power of the input signal; and a power synthesizer for synthesizing the respective signals output from the saturati on magnetostatic wave filter and the linear magnetostatic wave filter. The S/N enhancer does not need phase shifter, and can be applied to a small-sized system that has a broadband and is used at a high power/a low power.
Abstract:
PURPOSE: A microstrip patch antenna is provided to broaden frequency bandwidth, improve antenna gain, and easily execute an impedance matching by using a stack slot. CONSTITUTION: A microstrip patch antenna comprises a dielectric layer, a feeder circuit, at least one slot(205), and a patch antenna(402). The feeder circuit is arranged inside the dielectric layer. The slot is arranged inside the dielectric layer in order to be separated from the feeder circuit. The patch antenna is arranged outside the dielectric layer in order to be separated from the slot. The dielectric layer includes a plurality of LTCC(Low Temperature Co-fired Ceramic) substrates, a plurality of silicon substrates, a plurality of printed circuit boards, and a plurality of liquid crystal polymer substrates.
Abstract:
PURPOSE: A micro-strip patch antenna with high gain and wide band characteristics is provided to obtain a broadband and high gain by using a stack slot in a single patch and a stack patch. CONSTITUTION: A feed line(103) is extended a first direction in a dielectric layer. An air cavity(109) is installed in lower part of the feed line. A first slot(205) is extended to a second direction different from the first direction on the top of the feed line circuit. A second slot(306) is overlapped with the first slot and is extended to the second direction. A patch antenna(402) is arranged on the top of the second slot.