Millimeter wave on-off keying modulator with high isolation and stable input matching

A technology of input matching and high isolation, which is applied in the direction of reliability improvement modification, bipolar transistor reliability improvement, logic circuit coupling device, etc., which can solve the problem of excessive input impedance change, unstable input matching, oscillator or signal It can improve the on/off isolation, relieve the pressure of the power supply voltage, and reduce the size of the power source.

Active Publication Date: 2020-05-05
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these OOK modulators still have the problem of excessive input impedance change in the on / off state, that is, the problem of unstable input matching
During the working process of the OOK modulator, high-speed and large-scale input impedance changes may cause the oscillator or signal source in the front stage of the modulator to work unstable

Method used

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  • Millimeter wave on-off keying modulator with high isolation and stable input matching
  • Millimeter wave on-off keying modulator with high isolation and stable input matching
  • Millimeter wave on-off keying modulator with high isolation and stable input matching

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, a millimeter-wave OOK modulator with high isolation and stable input matching provided by the present invention includes a common source stage circuit 1, a transformer T 1 . An improved stacked common-gate level switch circuit 2, the common-source level circuit 1 includes a common-source level transistor M 1 , Negative feedback inductance L S1 , input matching and biasing network 3, the transformer T 1 Including a primary coil 4 and a secondary coil 5, the improved laminated cascode switch circuit 2 includes a lower cascode transistor M 2 , upper common-gate transistor M 3 , series inductance L S2 , the lower switching transistor M 4 , upper switch transistor M 5 , the first inverter I 1 , the second inverter I 2 , bypass capacitor C b , Output matching and bias network 6.

[0026] The specific connection relationship of the c...

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Abstract

The invention discloses a millimeter wave on-off keying modulator with high isolation and stable input matching. The modulator comprises a cascode circuit, a transformer and an improved stacked cascode switching circuit, according to the improved stacked common-gate switching circuit, a series inductor, a lower-layer switching transistor and an upper-layer switching transistor are added on the basis of a traditional stacked common-gate switching circuit; by optimizing the inductance value of the series inductor and the gate widths of the lower-layer switching transistor and the upper-layer switching transistor, the on/off isolation of the circuit can be improved under the condition that the circuit gain is not influenced, and the input impedance change of the circuit in an on/off state canalso be remarkably reduced; besides, the cascode circuit and the improved stacked common-gate switching circuit are coupled through the transformer, so that small size, low voltage and high gain arerealized, influence of the input impedance change of the improved stacked common-gate switching circuit in an on/off state on input matching of the modulator is further reduced, and more stable inputmatching is realized.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter waves, and relates to a millimeter-wave on-off keying modulator, in particular to a millimeter-wave on-off keying modulator with high isolation and stable input matching. Background technique [0002] In recent years, with the development of fifth-generation mobile communication (5G) and Internet of Things (IoT) technologies, millimeter-wave on-off keying (OOK) wireless communication systems with high speed, low cost, and low power consumption have attracted widespread attention. . Among them, the OOK modulator is a key device in the OOK transceiver system, and its main performance indicators include modulation rate, gain, on / off isolation, and input matching stability. [0003] The simplest OOK modulator uses the OOK signal to directly control the turn-on and turn-off of the oscillator. Although they can obtain high on / off isolation, the modulation rate is limited by the start-u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/003H03K19/018
CPCH03K19/00307H03K19/017545H03K19/01825Y02D30/70
Inventor 朱舫罗国清游彬洪慧潘玉剑
Owner HANGZHOU DIANZI UNIV
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