CN202633912U

CN202633912U - Rectifier of high-frequency interface in electronic label

Info

Publication number: CN202633912U
Application number: CN 201220316371
Authority: CN
Inventors: 曾维亮
Original assignee: Chengdu Hongshan Technology Co Ltd
Current assignee: Chengdu Hongshan Technology Co Ltd
Priority date: 2012-07-03
Filing date: 2012-07-03
Publication date: 2012-12-26
Anticipated expiration: 2022-07-03

Abstract

The utility model discloses a rectifier of a high-frequency interface in an electronic label, and the rectifier comprises a first capacitor, a first PMOS (P-channel Metal Oxide Semiconductor) tansistor, a second PMOS tansistor and a rectification voltage output line, wherein the drain electrodes, grid electrodes and substrates of the first and second PMOS tansistors are connected to the rectification voltage output line; one end of the first capacitor is connected with the rectification voltage output line and the other end of the first capacitor is grounded; the source electrode of the first PMOS of the first capacitor is connected with a first antenna signal input line; and the source electrode of the second PMOS of the first capacitor is connected with a second antenna signal input line. By using the structure, the rectifier is simple in overall structure, convenient in realization and capable of improving the rectification efficiency.

Description

The rectifier of electronic tag medium-high frequency interface

Technical field

The utility model relates to the radio-frequency technique field, specifically is the rectifier of electronic tag medium-high frequency interface.

Background technology

Along with the fast development of electronic technology and improving constantly of manufacture level; The REID development of adopting radio to realize is swift and violent; Radio frequency recognizing electronic label is as a kind of non-contact IC card; It combines radiotechnics and IC technology, through the automatic recognition objective object of radiofrequency signal and obtain related data.The high frequency interface of electronic tag forms the high-frequency transmission path from the reader to the electronic tag in the radio-frequency recognition system, high frequency interface absorption current from its antenna, and with after the current commutates voltage stabilizing that absorbs as the power supply of chip in the electronic tag.When the voltage in the existing high frequency interface on the antenna was lower than rectifier output voltage, the electric charge that gathers on the electric capacity can leak, thereby can make that the rectification efficiency that has rectification circuit in the high frequency interface now is low.

The utility model content

The purpose of the utility model is to overcome the deficiency of prior art, provides a kind of simple in structure, and can improve the rectifier of the electronic tag medium-high frequency interface of rectification efficiency.

The purpose of the utility model mainly realizes through following technical scheme: the rectifier of electronic tag medium-high frequency interface; Comprise first electric capacity, PMOS pipe, the 2nd PMOS pipe and commutating voltage output line; Said PMOS pipe and the 2nd PMOS pipe both drain electrode, grid and substrate all are connected on the commutating voltage output line; Said first electric capacity, one end is connected its other end ground connection with the commutating voltage output line; The source electrode of said PMOS pipe is connected with the first aerial signal incoming line, and the source electrode of said the 2nd PMOS pipe is connected with the second aerial signal incoming line.Wherein, When the utility model is used; The other end that the first aerial signal incoming line relatively connects PMOS pipe drain electrode end and the second aerial signal incoming line are connected the other end that the 2nd PMOS manages drain electrode end relatively and all are connected on the antenna of high frequency interface, and the commutating voltage output line is used for the output of the direct voltage that the high frequency interface generates.

The rectifier of electronic tag medium-high frequency interface; Also comprise NMOS pipe and the 2nd NMOS pipe; The drain electrode of said NMOS pipe is connected on the first aerial signal incoming line; The drain electrode of the 2nd NMOS pipe is connected on the second aerial signal incoming line; The one NMOS tube grid is connected with the circuit that the second aerial signal incoming line and the 2nd NMOS manage between the drain electrode, and the 2nd NMOS tube grid is connected with the circuit that the first aerial signal incoming line and a NMOS manage between the drain electrode, and NMOS pipe and the 2nd NMOS manage both source groundings.Alternate conduction when the one NMOS pipe and the 2nd NMOS plumber do makes the low-pressure end ground connection on the antenna.

Be connected with second electric capacity between the said first aerial signal incoming line and the second aerial signal incoming line.The utility model can or be replaced the change that second electric capacity is realized its parameter through change, thereby changes the resonance frequency of antenna.

During the utility model work; When the voltage on the antenna is higher than the voltage of commutating voltage output line output; Have two branch currents simultaneously and flow to the commutating voltage output line; Article one, branch road is that PMOS pipe and the 2nd PMOS manage the channel current when being in normally, and another branch road is because the substrate current that drain electrode that PMOS pipe and the 2nd PMOS manage and the PN junction positively biased between the substrate produce; When the voltage on the antenna is lower than the output voltage of commutating voltage output line; The one PMOS pipe and the 2nd PMOS pipe are in cut-off state; The drain electrode of PMOS pipe and the 2nd PMOS pipe and substrate are in anti-state partially simultaneously; Substrate current be can not produce, PMOS pipe and the 2nd PMOS pipe therefore can be closed well.

Compared with prior art; The utlity model has following beneficial effect: the utility model comprises first electric capacity, PMOS pipe, the 2nd PMOS pipe and commutating voltage output line, and overall structure is simple, is convenient to realize; When the voltage on antenna is lower than the output voltage of commutating voltage output line; The utility model can be managed through turn-offing PMOS pipe and the 2nd PMOS, thereby the electric charge of avoiding gathering on first electric capacity leaks, and helps to improve rectification efficiency; Difference between the output voltage of voltage in the utility model on the antenna and commutating voltage output line is no longer determined by the threshold value of PMOS pipe; But the pressure drop decision at the diode two ends that constitute with substrate by drain electrode, this has further improved the rectification efficiency of the utility model.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

The pairing name of Reference numeral is called in the accompanying drawing: C1-first electric capacity, C2-second electric capacity, P1-the one PMOS pipe; P2-the 2nd PMOS pipe; N1-the one NMOS pipe, N2-the 2nd NMOS pipe, ANT1-first aerial signal incoming line; ANT2-second aerial signal incoming line, 1-commutating voltage output line.

Embodiment

Below in conjunction with embodiment and accompanying drawing the utility model is done further to specify, but the execution mode of the utility model is not limited thereto.

Embodiment:

As shown in Figure 1, the rectifier of electronic tag medium-high frequency interface comprises first capacitor C 1, commutating voltage output line 1 and four metal-oxide-semiconductors, and wherein, four metal-oxide-semiconductors are respectively PMOS pipe P1, the 2nd PMOS pipe P2, NMOS pipe N1 and the 2nd NMOS pipe N2.Commutating voltage output line 1 is used to export the direct voltage after the rectification; Drain electrode, grid and the substrate of the one PMOS pipe P1 and the 2nd PMOS pipe P2 all are connected on the commutating voltage output line 1; First capacitor C, 1 one ends be connected with commutating voltage output line 1 and link position near the output tip position of commutating voltage output line 1, its other end ground connection.The source electrode of the one PMOS pipe P1 is connected with the first aerial signal incoming line ANT1; The source electrode of the 2nd PMOS pipe P2 is connected with the second aerial signal incoming line ANT2, is connected with second capacitor C 2 between the first aerial signal incoming line ANT1 and the second aerial signal incoming line ANT2.

The one NMOS pipe N1 drain electrode is connected on the first aerial signal incoming line ANT1; The 2nd NMOS pipe N2 drain electrode is connected on the second aerial signal incoming line ANT2; The one NMOS pipe N1 grid is connected with the circuit that the second aerial signal incoming line ANT2 and the 2nd NMOS manage between the N2 drain electrode; The 2nd NMOS pipe N2 grid is connected with the circuit that the first aerial signal incoming line ANT1 and a NMOS manage between the N1 drain electrode, NMOS pipe N1 and the 2nd NMOS pipe N2 person's source grounding.

As stated, then can well realize the utility model.

Claims

1. the rectifier of electronic tag medium-high frequency interface; It is characterized in that: comprise that first electric capacity (C1), PMOS pipe (P1), the 2nd PMOS manage (P2) and commutating voltage output line (1); Said PMOS pipe (P1) and (P2) both drain electrodes of the 2nd PMOS pipe, grid and substrate all are connected on the commutating voltage output line (1); Said first electric capacity (C1) end is connected with commutating voltage output line (1), its other end ground connection; The source electrode of said PMOS pipe (P1) is connected with the first aerial signal incoming line (ANT1), and the source electrode of said the 2nd PMOS pipe (P2) is connected with the second aerial signal incoming line (ANT2).

2. the rectifier of electronic tag medium-high frequency interface according to claim 1; It is characterized in that: also comprise NMOS pipe (N1) and the 2nd NMOS pipe (N2); Said NMOS pipe (N1) drain electrode is connected on the first aerial signal incoming line (ANT1); The 2nd NMOS pipe (N2) drain electrode is connected on the second aerial signal incoming line (ANT2); The one NMOS pipe (N1) grid is connected with the circuit that the second aerial signal incoming line (ANT2) and the 2nd NMOS manage between (N2) drain electrode; The 2nd NMOS pipe (N2) grid is connected with the circuit that the first aerial signal incoming line (ANT1) and a NMOS manage between (N1) drain electrode, NMOS pipe (N1) and the 2nd NMOS pipe (N2) both source groundings.

3. the rectifier of electronic tag medium-high frequency interface according to claim 1 and 2 is characterized in that: be connected with second electric capacity (C2) between the said first aerial signal incoming line (ANT1) and the second aerial signal incoming line (ANT2).