Radio frequency device and base station antenna
A radio frequency device comprises: a substrate; a conductive circuit that is configured to transmit a signal and comprises a plurality of transmission line segments on the substrate; and a decoupling element on the substrate positioned between adjacent first and second transmission line segments, the decoupling element comprising a first arm adjacent to the first segment of transmission line, a second arm adjacent to the second segment of transmission line, and a connecting portion connecting the first and second arms. The decoupling element is configured to reduce coupling between the first and second transmission line segments.
1 . A radio frequency device, wherein the radio frequency device comprises:
a substrate;
a conductive circuit disposed on the substrate, the conductive circuit configured to transmit a signal and comprising a plurality of segments of transmission lines; and
a decoupling element disposed on the substrate in a same plane as the conductive circuit and positioned between adjacent first and second segments of the plurality of segments of the transmission lines, the decoupling element comprising a first arm adjacent to the first segment of the plurality of segments of the transmission lines, a second arm adjacent to the second segment of the plurality of segments of the transmission lines, and a connecting portion connecting the first and second arms, the decoupling element configured to at least partially reduce coupling between the first and second segments of the plurality of segments of the transmission lines.
2 . The radio frequency device according to claim 1 , wherein the first arm of the decoupling element is generally parallel to the second arm.
3 . The radio frequency device according to claim 1 , wherein the first arm of the decoupling element is generally parallel to the first segment of the plurality of segments of the transmission lines and the second arm of the decoupling element is generally parallel to the second segment of the plurality of segments of the transmission lines.
4 . The radio frequency device according to claim 1 , wherein the decoupling element is generally U-shaped.
5 . The radio frequency device according to claim 4 , wherein the decoupling element has a length that is between one fifth and one third of a wavelength at a central frequency of an operating frequency band of the radio frequency device.
6 . The radio frequency device according to claim 1 , wherein the decoupling element is generally H-shaped or A-shaped.
7 . The radio frequency device according to claim 1 , wherein the decoupling element is a first decoupling element having a first shape, and wherein the radio frequency device comprises a second decoupling element having a second shape that is different from the first shape.
8 . The radio frequency device according to claim 1 , wherein the decoupling element is a first decoupling element having a first shape and a first orientation, and wherein the radio frequency device comprises a second decoupling element having the first shape and a second orientation different from the first orientation.
9 . The radio frequency device according to claim 1 , wherein a distance between two adjacent segments of the plurality of segments of the transmission lines is less than 10 mm.
10 . The radio frequency device according to claim 1 , wherein the substrate comprises a first surface and a second surface opposite to the first surface, the conductive circuit comprises a first conductive circuit disposed on the first surface and a second conductive circuit disposed on the second surface, and the first conductive circuit is electrically connected to the second conductive circuit via a conductive structure.
11 . The radio frequency device according to claim 10 , wherein the first conductive circuit is symmetrical with the second conductive circuit relative to the substrate.
12 . The radio frequency device according claim 1 , wherein the radio frequency device is configured as a phase shifter, a filter, a power divider, a duplexer, a feeder panel, or a combiner.
13 . A radio frequency device, wherein the radio frequency device comprises:
a substrate;
a conductive circuit disposed on the substrate, the conductive circuit configured to transmit a signal and including multiple segments of transmission lines; and
a decoupling element disposed in a same plane as the conductive circuit and between adjacent first and second segments of the multiple segments of the transmission lines of the conductive circuit, the decoupling element having a substantially U-shaped shape.
14 . The radio frequency device according to claim 13 , wherein a first arm and a second arm of the decoupling element are substantially equal in length.
15 . The radio frequency device according to claim 13 , wherein the decoupling element has a length that is about a quarter of a wavelength at a central frequency of an operating frequency band of the radio frequency device.
16 . The radio frequency device according to claim 13 , wherein the decoupling element is a first decoupling element having a first orientation, and wherein the radio frequency device comprises a second decoupling element that has a second orientation that is different from the first orientation.
17 . The radio frequency device according to claim 13 , wherein a distance between two adjacent segments of the multiple segments of the transmission lines is less than 4 mm.
18 . The radio frequency device according to claim 13 , wherein at least one of the multiple segments of the transmission lines is serpentinely coiled.
19 . The radio frequency device according to claim 13 , wherein the radio frequency device is configured as a cavity phase shifter.