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US 12,206,383 B2Granted
Dual-band 360 degree phase shifter using series/parallel resonance circuit for phased array antenna system
AssigneeElectronics and Telecommunications Research Institute
InventorsJun Han Lim, Seong Mo Moon, Jin Sek Park, Dong Pil Chang
Life of this patent
Estimating the term…
Abstract
Disclosed is a dual-band phase shifter in which series/parallel resonance circuits are applied to a polyphase filter to implement a phase shifter, which is a core block of a multi-channel RFIC for implementing a phased array antenna system. The dual-band phase shifter may be configured by converting a capacitor (C) of an LC circuit or a CL circuit in the RFIC into a series resonance circuit and converting an inductor (L) thereof into a parallel resonance circuit, so that a signal generator operating in one frequency band can operate in a dual-band.
Claims2
A dual-band phase shifter comprising:
- a first input (Ip) configured to commonly connect to a first terminal of a first capacitor (C1), a first terminal of a first inductor (L1), and a first terminal of a first resistor (R1);
- a second input (In) configured to commonly connect to a first terminal of a third inductor (L3), a first terminal of a third capacitor (C3), and a first terminal of a fourth resistor (R4);
- a first output (OIp) configured to commonly connect to a second terminal of the first resistor (R1), a second terminal of a second capacitor (C2), and a second terminal of a second inductor (L2);
- a second output (OIn) configured to commonly connect to a second terminal of the fourth resistor (R4), a second terminal of a fourth inductor (L4), and a second terminal of a fourth capacitor (C4);
- a third output (OQp) configured to commonly connect to a second terminal of the first capacitor (C1), a second terminal of the third inductor (L3), and a second terminal of a third resistor (R3);
- and
- a fourth output (OQn) configured to commonly connect to a second terminal of the first inductor (L1), a second terminal of the third capacitor (C3), and a second terminal of a second resistor (R2);
- wherein a first terminal of the third resistor (R3) is commonly connected to a first terminal of the second inductor (L2) and a first terminal of the fourth capacitor (C4), and
- wherein a first terminal of the second resistor (R2) is commonly connected to a first terminal of the second capacitor (C2) and a first terminal of the fourth inductor (L4).
6 more elements
A dual-band phase shifter comprising:
- a first input (Ip) configured to commonly connect to a first terminal of a series resonance circuit of a first capacitor (C11) and a second inductor (L12), a first terminal of a parallel resonance circuit of a second capacitor (C12) and a first inductor (L11), and a first terminal of a first resistor (R1);
- a second input (In) configured to commonly connect to a first terminal of a series resonance circuit of a fifth capacitor (C31) and a sixth inductor (L32), a first terminal of a parallel resonance circuit of a sixth capacitor (C32) and a fifth inductor (L31), and a first terminal of a fourth resistor (R4);
- a first output (OIp) configured to commonly connect to a second terminal of the first resistor (R1), a second terminal of a series resonance circuit of a third capacitor (C21) and a fourth inductor (L22), and a second terminal of a parallel resonance circuit of a fourth capacitor (C22) and a third inductor (L21);
- a second output (OIn) configured to commonly connect to a second terminal of the fourth resistor (R4), a second terminal of a parallel resonance circuit of an eighth capacitor (C42) and a seventh inductor (L41), and a second terminal of a series resonance circuit of a seventh capacitor (C41) and an eighth inductor (L42);
- a third output (OQp) configured to commonly connect to a second terminal of the series resonance circuit of the first capacitor (C11) and the second inductor (L12), a second terminal of the parallel resonance circuit of the sixth capacitor (C32) and the fifth inductor (L31), and a second terminal of a third resistor (R3);
- and
- a fourth output (OQn) configured to commonly connect to a second terminal of the parallel resonance circuit of the second capacitor (C12) and the first inductor (L11), a second terminal of the series resonance circuit of the fifth capacitor (C31) and the sixth inductor (L32), and a second terminal of a second resistor (R2);
- wherein a first terminal of the third resistor (R3) is commonly connected to a first terminal of the parallel resonance circuit of the fourth capacitor (C22) and the third inductor (L21) and a first terminal of the series resonance circuit of the seventh capacitor (C41) and the eighth inductor (L42), and
- wherein a first terminal of the second resistor (R2) is commonly connected to a first terminal of the series resonance circuit of the third capacitor (C21) and the fourth inductor (L22) and a first terminal of the parallel resonance circuit of the eighth capacitor (C42) and the seventh inductor (L41).
6 more elements
Dependencies are inferred from the claim text.