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UWB Digital Phase Shifter

A digital phase shifter and ultra-wideband technology, applied in the field of phase shifters, can solve the problems that reflection circuits are difficult to meet the requirements of ultra-wideband frequency bands, increase circuit costs, and unfavorable integration, and achieve compact structure, low insertion loss, and circuit reduction. area effect

Active Publication Date: 2018-05-29
NANJING MILEWEI CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Reflective phase shifters are widely used in the design of broadband phase shifters. Traditional 3dB couplers such as Lange couplers have a large area, which is not conducive to integration and increases circuit costs; traditional reflective circuits are difficult to meet ultra-wideband The frequency band requirements

Method used

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  • UWB Digital Phase Shifter
  • UWB Digital Phase Shifter
  • UWB Digital Phase Shifter

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specific Embodiment approach

[0036] In order to broaden the bandwidth, four spiral inductive coupling units are cascaded to form the attached image 3 In the UWB coupler shown in , ports 1, 2, 3, and 4 are the input end, straight-through end, coupling end, and isolation end of the UWB coupler, respectively, and they are the first, second, and The third and fourth stages of spiral inductive coupling units, each spiral inductive coupling unit is connected in series through the first spiral inductors of each level and the second spiral inductors of each level to achieve multi-level cascading, shared between the front and rear stages A jumper capacitor and a capacitor to ground located across the jumper capacitor. The structure of the coupler circuit is symmetrical up and down, left and right, that is, the structure of the first, second, third, and fourth spiral inductive coupling units is symmetrical with the horizontal center line and the vertical center line, image 3In C01=C02=C01'=C02', C1=C1'; C21=C22=...

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Abstract

The invention discloses an ultra-wideband digital phase shifter. The phase shifter comprises a coupler, a first and a second impedance network; the coupler is formed by cascading spiral inductive coupling units; each stage of the spiral inductive coupling unit includes The first spiral inductance and the second spiral inductance are coupled to each other; the multi-stage cascade is realized between the spiral inductive coupling units through the series connection of the first spiral inductance of each stage and the series connection of the second spiral inductance of each stage; coupling from outside to inside The coupling spacing or microstrip line width of each spiral inductive coupling unit in the device gradually decreases. The impedance network is realized by LC circuits and switching elements, and the state of the impedance network is switched by switches to generate phase shifts, with reasonable structure and easy implementation; the phase shifter has compact structure, small occupied area, and good broadband characteristics, and is suitable for integrated chip applications. It has great advantages and application space.

Description

technical field [0001] The invention relates to a phase shifter, in particular to a digital phase shifter. Background technique [0002] With the continuous development of broadband active phased array radar, people's demand for antenna beam control continues to increase, and the research on control circuits is also more in-depth. [0003] As a key component of beam control, the phase shifter has always been one of the key components in antenna transceiver components due to its many working states and technical indicators, large footprint, high performance requirements, and difficult design and manufacture. The development of phased array radar puts forward higher requirements on the bandwidth, phase shifting accuracy and integration area of ​​the phase shifter. Therefore, the research on broadband and ultra-wideband high-performance phase shifters has important significance and practical application value . [0004] Reflective phase shifters are widely used in the design ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/18
CPCH03H7/09H03H7/185H03H7/19H01P1/18H01P1/184H01Q3/38
Inventor 杜璟蒋乐夏冬
Owner NANJING MILEWEI CORP
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