Branching device
US-2016301379-A1 · Oct 13, 2016 · US
Waveguide-type image rejection filter and single-sideband receiver, frequency divider, and sideband-separating receiver using the same filter
US9397378B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9397378-B2 |
| Application number | US-201414768618-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 30, 2014 |
| Priority date | Feb 19, 2013 |
| Publication date | Jul 19, 2016 |
| Grant date | Jul 19, 2016 |
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Abstract
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An image rejection filter comprising a waveguide-type 90-degree hybrid coupler having an input port for receiving an input signal within a millimeter or submillimeter band, first and second output ports for dividing the input signal in two and outputting the divided signals, respectively, wherein the one signal deviates by a 90-degree phase from the other signal, and a branch port for outputting the signal; a pair of band pass filters: a waveguide-type first band pass filter whose one end is connected with the first output port and a waveguide-type second band pass filter whose one end is connected with the second output port; and a pair of radiowave absorptive terminations: a first radiowave absorptive termination connected to the other end of the first band pass filter and a second radiowave absorptive termination connected to the other end of the second band pass filter.
First claim
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The invention claimed is: 1. An waveguide-type image rejection filter comprising: a waveguide-type 90-degree hybrid coupler having an input port for receiving an input signal within a millimeter or submillimeter band, first and second output ports for outputting divided signals, respectively, and a branch port for outputting a coupled signal composed of two signals inputted from the first and second output ports; a pair of band pass filters: a waveguide-type first band pass filt…
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- What does patent US9397378B2 cover?
- An image rejection filter comprising a waveguide-type 90-degree hybrid coupler having an input port for receiving an input signal within a millimeter or submillimeter band, first and second output ports for dividing the input signal in two and outputting the divided signals, respectively, wherein the one signal deviates by a 90-degree phase from the other signal, and a branch port for outputtin…
- Who is the assignee on this patent?
- Univ Osaka Prefect Public Corp
- What technology area does this patent fall under?
- Primary CPC classification H01P1/213. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 19 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).