Patent ID: 7307490

Claim:
A high frequency switch structure comprising first, second, third, and fourth input terminals and first and second high frequency switch devices, wherein the first high-frequency switch device includes first, second, third, fourth, fifth, sixth, and seventh single pole-double throw-switches, each of the first, second, third, fourth, fifth, sixth, and seventh SPDT switches having one pole, a first port, and a second port, wherein the second ports of the first second, fourth, and fifth SPDT switches are respectively grounded via respective first, second, third, and fourth terminating resistors, each terminating resistor having predetermined impedance, the first port of the third SPDT switch is connected to the first port of the first SPDT switch, the second port of the third SPDT switch is connected to the first port of the second SPDT switch, the first port of the sixth SPDT switch is connected to the first port of the fourth SPDT switch, the second port of the sixth SPDT switch is connected to the first port of the fifth SPDT switch, the first port of the seventh SPDT switch is directly connected to the pole of the third SPDT switch, and the second port of the seventh SPDT switch is directly connected to the pole of the sixth SPDT switch; the second high-frequency switch device includes eighth, ninth, tenth, eleventh, twelfth, thirteenth, and fourteenth single pole-double throw switches, each of the eighth, ninth, tenth, eleventh, twelfth, thirteenth, and fourteenth SPDT switches having one pole, a first port, and a second port, wherein the second ports of the eighth, ninth, eleventh, and twelfth SPDT switches are respectively grounded via respective fifth, sixth, seventh, and eighth terminating resistors, each terminating resistor having predetermined impedance, the first port of the tenth SPDT switch is connected to the first port of the eighth SPDT switch, the second port of the tenth SPDT switch is connected to the first port of the ninth SPDT switch, the first port of the thirteenth SPDT switch is connected to the first port of the eleventh SPDT switch, the second port of the thirteenth SPDT switch is connected to the first port of the twelfth SPDT switch, the first port of the fourteenth SPDT switch is directly connected to the pole of the tenth SPDT switch, and the second port of the fourteenth SPDT switch is directly connected to the pole of the thirteenth SPDT switch; the poles of the first and eighth SPDT switches are directly connected to the first input terminal; the poles of the second and ninth SPDT switches are directly connected to the second input terminal; the poles of the fourth and eleventh SPDT switches are directly connected to the third input terminal; and the poles of the fifth and twelfth SPDT are directly connected to the fourth input terminal.