§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US6677833B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Multilayered band separator with grounding parasitic capacitor

Assignee: Industrial Technology Research Institute
•
Filing: 2002-04-17
•
Granted: 2004-01-13
•
Expires: 2022-04-17
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A multilayer band separator with a grounding parasitic capacitor. The separator includes a quasi-highpass filter, a semi-lumped lowpass filter and a phase shifter. The quasi-highpass filter includes a third capacitor connected to an input signal, a fourth capacitor with one end connected to the third capacitor and the other end connected to ground, an inductive element with one end connected to ground and the other end connected to the connection point of the third and fourth capacitors, and a second capacitor with one end connected to the connection point of the third capacitor, the fourth capacitor and the inductive element and the other end connected to a second output to pass a high-frequency output signal. The phase shifter is a transmission line element connected to the input signal. The semi-lumped lowpass filter includes an inductive element with one end connected to the end of the phase shifter without the input signal and the other end connected to a first output to pass a low-frequency output signal, and a first capacitor connected in parallel to the inductive element.

Inventors

  • 👤 Jyh-Wen Sheen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 14:39
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/46

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 111 words
A multilayered band separator with grounding parasitic capacitor, capable of separating a high-frequency signal and a low-frequency signal from an operating band with an input signal input by an input port, comprising: a quasi-highpass filter, having three capacitive devices and a grounding inductive device in a cross-shaped implementation to be the high-frequency signal output passage, wherein a capacitive device is a grounding pararistic capacitor formed by the two other capacitive devices; a phase shifter, connected in parallel to the quasi-highpass filter, to provide the low-frequency signal output passage; and a semi-lumped lowpass filter, connected in series to the phase shifter, to produce a higher outband rejection without an additional filter stage.
Claim 2
Dependent Claim 111 words
A multilayered band separator with grounding parasitic capacitor, capable of separating a high-frequency signal and a low-frequency signal from an operating band with an input signal input by an input port, comprising: a quasi-highpass filter, having three capacitive devices and a grounding inductive device in a cross-shaped implementation to be the high-frequency signal output passage, wherein a capacitive device is a grounding pararistic capacitor formed by the two other capacitive devices; a phase shifter, connected in parallel to the quasi-highpass filter, to provide the low-frequency signal output passage; and a semi-lumped lowpass filter, connected in series to the phase shifter, to produce a higher outband rejection without an additional filter stage.
Claim 3
Dependent Claim 98 words
The multilayered band separator of claim 1 , wherein the cross-shaped implementation is a third capacitor connected to the input port, a fourth capacitor with an end connected to the third capacitor and another end connected to grounding, an inductive device with an end connected to grounding and another end connected to the connection point of the third and fourth capacitors, and a second capacitor with an end connected to a second output end and another end connected to the connection point of the third and fourth capacitors and the inductive device to pass a high-frequency output signal.
Claim 4
Dependent Claim 22 words
The multilayered band separator of claim 1 , wherein the phase shifter is a transmission line device connected to the input signal.
Claim 5
Dependent Claim 52 words
The multilayered band separator of claim 1 , wherein the semi-lumped lowpass filter comprises an inductive device with an end connected to a first output end and another end connected to another end of the phase shifter to pass a low-frequency output signal, and a first capacitor connected across the inductive device.
Claim 6
Dependent Claim 20 words
The multilayered band separator of claim 1 , wherein the operating band for the low-frequency signal ranges between 800-1000 MHz.
Claim 7
Dependent Claim 20 words
The multilayered band separator of claim 1 , wherein the operating band for the high-frequency signal ranges between 1700-2000 MHz.

References Cited (Backward Citations)

US5258728A Cited
US6243564B1 Cited
US5880649A Cited
US6097268A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2007-01-12 2007-07-14 2008-01-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2011-01-12 2011-07-14 2012-01-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2015-01-12 2015-07-14 2016-01-13 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag