Balanced bandpass filters for millimeter-wave applications

Patent metadata

Field	Value
Publication number	US-12548872-B2
Application number	US-202118041986-A
Country	US
Kind code	B2
Filing date	Sep 2, 2021
Priority date	Sep 2, 2020
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

This disclosure describes systems and methods for use with the design and implementation of bandpass filters for millimeter-wave applications. The filters can include an input port for receiving a signal from a signal generator, an output port, and a resonator. The resonator can be coupled between the input port and the output port. The resonator can have a T-shaped design.

First claim

What is claimed is:

1 . An electronic communication system comprising:
a signal generator; bandpass filter coupled with the signal generator, the bandpass filter comprising:
an input port configured to receive a signal that is generated based on an output of the signal generator;
an output port; and
a resonator coupled between the input port and the output port, the resonator configured to output the signal to the output port at a resonance frequency;
an amplifier coupled to the output port of the bandpass filter; and an antenna coupled to the amplifier.

2 . The electronic communication system of claim 1 , wherein the bandpass filter is a single input, dual output bandpass filter comprising one input port for receiving an input signal and first and second output ports for outputting first and second signals.

3 . The electronic communication system of claim 2 , wherein the first and second signals are equal with no phase difference.

4 . The electronic communication system of claim 2 , wherein the first and second signals have a 180 degree phase shift between the first and second signals.

5 . The electronic communication system of claim 2 , further comprising an isolation port coupled with a resistor.

6 . The electronic communication system of claim 2 , wherein the bandpass filter comprises a substrate having a dielectric constant between 2.5 and 3 and a thickness between 0.1 and 0.2.

7 . The electronic communication system of claim 1 , wherein the bandpass filter is a dual input, single output filter comprising first and second input ports for receiving first and second signals and an output port for outputting an output signal.

8 . The electronic communication system of claim 7 , wherein the first and second signals are equal with no phase difference.

9 . The electronic communication system of claim 7 , wherein the first and second signals have a 180 degree phase shift between the first and second signals.

10 . The electronic communication system of claim 7 , further comprising an isolation port coupled with a resistor.

11 . The electronic communication system of claim 1 , wherein the bandpass filter is a dual input, dual output filter comprising first and second input ports for receiving first and second signals and multiple output ports for outputting one or more signals.

12 . The electronic communication system of claim 11 , wherein the first and second signals are equal with no phase difference.

13 . The electronic communication system of claim 11 , wherein the first and second signals have a 180 degree phase shift between the signals.

14 . A microstrip bandpass filter system comprising:
an input port configured to receive a signal that is generated based on an output of a signal generator; an output port; a resonator coupled between the input port and the output port, the resonator configured to output the signal to the output port at a resonance frequency; an amplifier coupled to the output port; and an antenna coupled to the amplifier.

15 . The microstrip bandpass filter system of claim 14 , wherein the resonator has a T-shaped structure.

16 . The microstrip bandpass filter system of claim 15 , wherein the resonator comprises an edge coupled line.

17 . The microstrip bandpass filter system of claim 15 , wherein the resonator is a grounded, un-grounded, or hybrid resonator.

18 . A method, comprising:
inputting to a bandpass filter a signal, wherein the bandpass filter comprises:
an input port configured to receive the signal that is generated based on an output of a signal generator;
an output port; and
a resonator coupled between the input port and the output port, the resonator configured to output the signal to the output port at a resonance frequency; receiving, from the bandpass filter, the signal at the resonance frequency; conditioning, by an amplifier coupled to the output port, the signal; and transmitting, by an antenna coupled to the amplifier, the conditioned signal.

19 . The method of claim 18 , wherein inputting the signal to the bandpass filter comprises inputting the signal into a plurality of input ports.

20 . The method of claim 18 , wherein receiving the signal from the bandpass filter comprises receiving the signal by a plurality of output ports.

Assignees

• Univ Khalifa Science & Technology

Inventors

• Kebe Mamady
• Mohammad Baker
• Sanduleanu Mihai

Classifications

• H04B1/40

  Circuits · CPC title

• H01P1/2039 Primary

  Galvanic coupling between Input/Output · CPC title