Antenna switch circuit and antenna switch module
First Claim
1. An antenna switch circuit connected to a common antenna for switching the connection of said antenna to transmission circuits or receiving circuits in plural transmitting/receiving systems having different passbands, comprising a diplexer circuit comprising a low-pass filter and a high-pass filter;
- a first switch circuit connected to said low-pass filter and comprising diodes, transmission lines and at least one capacitor for switching a transmitting line and a receiving line;
a second switch circuit connected to said high-pass filter and comprising diodes, transmission lines and at least one capacitor for switching a transmitting line and a receiving line; and
a fourth switch circuit connected to said second switch circuit and comprising a semiconductor element for switching said receiving line from said second switch circuit.
2 Assignments
0 Petitions
Accused Products
Abstract
An antenna switch module connected to a common antenna for switching the connection of the antenna to a transmission circuit or a receiving circuit in plural transmitting/receiving systems having different passbands, comprising a diplexer circuit comprising a low-pass filter and a high-pass filter; a first switch circuit connected to the low-pass filter and for switching a transmitting line and a receiving line, a second switch circuit connected to the high-pass filter for switching a transmitting line and a receiving line; a third switch circuit connected to the first switch circuit for switching the receiving line from the first switch circuit; and a fourth switch circuit connected to the second switch circuit for switching the receiving line from the second switch circuit; at least part of transmission lines constituting LC circuits in the diplexer circuit and the first and second switch circuits being electrode patterns formed in a multilayer substrate constituted by plural dielectric layers; and chip elements constituting part of the LC circuits, diode elements constituting the first and second switch circuits, and semiconductor elements constituting the third and fourth switch circuits being mounted onto the multilayer substrate.
-
Citations
19 Claims
-
1. An antenna switch circuit connected to a common antenna for switching the connection of said antenna to transmission circuits or receiving circuits in plural transmitting/receiving systems having different passbands, comprising
a diplexer circuit comprising a low-pass filter and a high-pass filter; -
a first switch circuit connected to said low-pass filter and comprising diodes, transmission lines and at least one capacitor for switching a transmitting line and a receiving line;
a second switch circuit connected to said high-pass filter and comprising diodes, transmission lines and at least one capacitor for switching a transmitting line and a receiving line; and
a fourth switch circuit connected to said second switch circuit and comprising a semiconductor element for switching said receiving line from said second switch circuit. - View Dependent Claims (2, 3, 4, 18)
-
-
5. An antenna switch circuit connected to a common antenna for switching the connection of said antenna to a transmission circuit or a receiving circuit in plural transmitting/receiving systems having different passbands, comprising
a diplexer circuit comprising a low-pass filter and a high-pass filter; -
a first switch circuit connected to said low-pass filter and comprising diodes, transmission lines and at least one capacitor for switching a transmitting line and a receiving line;
a second switch circuit connected to said high-pass filter and comprising diodes, transmission lines and at least one capacitor for switching a transmitting line and a receiving line;
a third switch circuit connected to said first switch circuit and comprising a semiconductor element for switching said receiving line from said first switch circuit; and
a fourth switch circuit connected to said second switch circuit and comprising a semiconductor element for switching said receiving line from said second switch circuit. - View Dependent Claims (6, 7, 8, 9, 10, 11)
-
-
12. An antenna switch module connected to a common antenna for switching the connection of said antenna to a transmission circuit or a receiving circuit in plural transmitting/receiving systems having different passbands, comprising
a diplexer circuit comprising a low-pass filter and a high-pass filter each constituted by an LC circuit; -
a first switch circuit connected to said low-pass filter and comprising diodes and transmission lines for switching a transmitting line and a receiving line, a second switch circuit connected to said high-pass filter and comprising diodes and transmission lines for switching a transmitting line and a receiving line;
a third switch circuit connected to said first switch circuit and comprising a semiconductor element for switching said receiving line from said first switch circuit; and
a fourth switch circuit connected to said second switch circuit and comprising a semiconductor element for switching said receiving line from said second switch circuit;
at least part of transmission lines constituting said LC circuits in said diplexer circuit and said first and second switch circuits being electrode patterns formed in a multilayer substrate constituted by plural dielectric layers; and
chip elements constituting part of said LC circuits, diode elements constituting said first and second switch circuits, and semiconductor elements constituting said third and fourth switch circuits being mounted onto said multilayer substrate. - View Dependent Claims (13, 14, 15, 16, 17, 19)
-
Specification