Abstract A high-frequency switch 20 includes a first diode 24. An anode of the first diode 24 is connected to a transmitting circuit TX via a capacitor 22, and is grounded via a first strip line 26 and a capacitor 28. A first control terminal 30 is connected to a connecting point of the first strip line 26 and the capacitor 28, and a control circuit for switching the high-frequency switch is connected to the first control terminal 30. A cathode of the first diode 24 is connected to an antenna ANT via a capacitor 32. One end of a second strip line 40 is connected to the antenna ANT via the capacitor 32. The end of the second strip line 40 is grounded via a capacitor 42. The other end of the second strip line 40 is connected to a receiving circuit RX via a capacitor 44, and is grounded via a second diode 46 and a capacitor 48.
A high-frequency switch connected to a transmitting circuit, a receiving circuit and an antenna, for switching a connection between said transmitting circuit and said antenna and a connection between said receiving circuit and said antenna, comprising: a first diode whose anode is connected to said transmitting circuit and whose cathode is connected to said antenna; a strip line connected between said antenna and said receiving circuit; a second diode whose anode is connected to said receiving circuit and whose cathode is connected to a ground; and a capacitor connected between ground and a connecting point of said strip line and said antenna.
Claim 2
Dependent Claim
102 words
A high-frequency switch connected to a transmitting circuit, a receiving circuit and an antenna, for switching a connection between said transmitting circuit and said antenna and a connection between said receiving circuit and said antenna, comprising: a first diode whose anode is connected to said transmitting circuit and whose cathode is connected to said antenna; a strip line connected between said antenna and said receiving circuit; a second diode whose anode is connected to said receiving circuit and whose cathode is connected to a ground; and a capacitor connected between ground and a connecting point of said strip line and said antenna.
Claim 3
Dependent Claim
66 words
A high-frequency switch according to claim 1, wherein said anode of said first diode is connected to said transmitting circuit via a capacitor, said cathode of said first diode is connected to said antenna via a capacitor, said anode of said second diode is connected to said receiving circuit via a capacitor, and said cathode of said second diode is connected to ground via a capacitor.
Claim 4
Dependent Claim
34 words
A high-frequency switch according to claim 2, wherein a first control terminal is connected to said anode of said first diode, and a second control terminal is connected to cathode of said second diode.
Claim 5
Dependent Claim
31 words
A high-frequency switch according to claim 3, which further comprises a series circuit of an inductor and a capacitor, wherein said series circuit is connected to said first diode in parallel.