CN202309619U

CN202309619U - Ultra-wideband down-conversion mixer

Info

Publication number: CN202309619U
Application number: CN2011204111698U
Authority: CN
Inventors: 吴烜; 刘万福; 邹闽中
Original assignee: NANJING GUORUI JIAYUAN MICROELECTRONICS CO Ltd
Current assignee: Nanjing Meichen Microelectronic Co., Ltd.
Priority date: 2011-10-26
Filing date: 2011-10-26
Publication date: 2012-07-04
Anticipated expiration: 2021-10-26

Abstract

The utility model provides an ultra-wideband down-conversion mixer, which comprises an on-chip integrated transformer, a common-base amplifier, a ground terminal, a radio frequency/local oscillator (RF/LO) input port and an output terminal, wherein one side of the on-chip integrated transformer is connected with the common-base amplifier, the other side of the on-chip integrated transformer is connected with the ground terminal and the RF/LO input port, and one side of the common-base amplifier is connected with the output terminal. According to the ultra-wideband down-conversion mixer designed by the utility model, the range of working frequencies is widened by using the on-chip integrated transformer and the common-base amplifier, so that the multi-mode and multi-frequency communication can be achieved; the ultra-wideband down-conversion mixer is applicable to wireless communication systems with various standards due to ultra-wideband working frequencies and high integration level; and the cost for a complete solution can be remarkably lowered, the area of a PCB (Printed Circuit Board) is reduced, and then, the system stability can be improved.

Description

A kind of ultra broadband down-conversion mixer

Technical field

The utility model relates to field of wireless communications systems, particularly a kind of ultra broadband down-conversion mixer.

Background technology

In modern times in the wireless communication system; Radio transceiver analog front-end is mainly accomplished the function of frequency translation in itself; The receiver AFE(analog front end) converts the radiofrequency signal that receives to low frequency signal; Frequency translation function is accomplished by frequency mixer, so frequency mixer is a key modules indispensable in the communication system.At present multimode gets more and more with multifrequency communication pattern system, designs a kind of novel frequency mixer in order to satisfy the multimode needs of communicating by letter with multifrequency.

The utility model content

In order to receive multimode and multifrequency signal of communication; The utility model designs a kind of ultra broadband down-conversion mixer and utilizes chip integration to become wide-band transformer and common-base amplifier to widen operating frequency range; Therefore can receive multimode and multifrequency signal of communication; For reaching this purpose, the utility model provides a kind of ultra broadband down-conversion mixer, comprises that chip integration becomes transformer, common-base amplifier, earth terminal, radio frequency/local oscillator input port and output; Said chip integration becomes two lead-out terminals of transformer to link to each other with two inputs of common-base amplifier; Chip integration becomes two input terminals of transformer to link to each other with radio frequency/local oscillator input port with earth terminal respectively, and said common-base amplifier one side is connected with output, and said chip integration becomes transformer to comprise that chip integration becomes wide-band transformer; Said common-base amplifier comprises two triodes and two voltage offset electric circuits; Said two triodes comprise first triode and second triode, and the emitter of the emitter of said first triode and second triode becomes the lead-out terminal of wide-band transformer to link to each other with chip integration, and the base stage of said first triode links to each other with the output of first voltage offset electric circuit; The base stage of said second triode links to each other with the output of second voltage offset electric circuit, and the collector electrode of the collector electrode of said first triode and second triode respectively is connected with an output.

Another kind as the utility model improves; Said chip integration becomes transformer also to comprise two electric capacity; Said first electric capacity is connected in chip integration and becomes wide-band transformer one side; Two nodes of said second electric capacity are installed in respectively between the emitter of emitter and second triode that chip integration becomes the wide-band transformer and first triode, and two electric capacity of this patent are for regulating the matching frequency point, realize wide band matched well through tuning.

The utility model designs a kind of ultra broadband down-conversion mixer and utilizes chip integration to become wide-band transformer and common-base amplifier to widen operating frequency range; Therefore can receive multimode and multifrequency signal of communication; Rely on its ultra broadband operating frequency, high integration; Be suitable for the multiple standards wireless communication system, thereby and can significantly reduce the total solution cost, dwindle the pcb board area and can improve the stability of a system.

Description of drawings

Fig. 1 realizes block diagram for the utility model;

Fig. 2 realizes principle assumption diagram for the utility model;

Member among the figure is:

1, chip integration becomes transformer; 1-1, chip integration become wide-band transformer;

1-2, first electric capacity; 2, common-base amplifier;

2-1-1, first triode; 2-1-2, second triode;

2-2-1, first voltage offset electric circuit; 2-2-2, second voltage offset electric circuit;

2-3, second electric capacity; 3, earth terminal;

4, radio frequency/local oscillator input port; 5, output;

Embodiment

Below in conjunction with accompanying drawing and embodiment utility model is done detailed explanation:

The utility model designs a kind of ultra broadband down-conversion mixer and utilizes chip integration to become wide-band transformer and common-base amplifier to widen operating frequency range, therefore can receive multimode and communicate by letter with multifrequency.

Provide realization block diagram realization principle assumption diagram as shown in Figure 1 a kind of ultra broadband down-conversion mixer as shown in Figure 2 as a kind of specific embodiment the utility model of this patent; Comprise that chip integration becomes transformer 1, common-base amplifier 2, earth terminal 3, radio frequency/local oscillator input port 4 and output 5; Said chip integration becomes two lead-out terminals of transformer 1 to link to each other with two inputs of common-base amplifier 2; Common-base amplifier 2 input impedance are Z=R+jX; Z=R+jX becomes the load of transformer 1 as chip integration; Chip integration becomes two input terminals of transformer 1 to link to each other with radio frequency/local oscillator input port 4 with earth terminal 3 respectively; Said common-base amplifier 2 one sides are connected with output 5, and said chip integration becomes transformer 1 to comprise that chip integration becomes wide-band transformer 1-1, and said chip integration becomes transformer 1 also to comprise two electric capacity; The said first electric capacity 1-2 is connected in chip integration and becomes wide-band transformer 1-1 one side; Two nodes of the said second electric capacity 2-3 are installed in respectively between the emitter of emitter and the second triode 2-1-2 that chip integration becomes the wide-band transformer 1-1 and the first triode 2-1-1, and two electric capacity of this patent are for regulating the matching frequency point, realize wide band matched well through tuning; Said common-base amplifier 2 comprises two triodes and two voltage offset electric circuits; The emitter of the emitter of the said first triode 2-1-1 and the second triode 2-1-2 becomes the lead-out terminal of wide-band transformer 1-1 to link to each other with chip integration, and the base stage of the said first triode 2-1-1 links to each other with the output of the first voltage offset electric circuit 2-2-1, and the base stage of the said second triode 2-1-2 links to each other with the output of the second voltage offset electric circuit 2-2-2; The collector electrode of the collector electrode of the said first triode 2-1-1 and the second triode 2-1-2 respectively is connected with an output 5; This patent utilizes chip integration to become wide-band transformer and common-base amplifier to widen operating frequency range, therefore can receive multimode and multifrequency signal of communication, relies on its ultra broadband operating frequency, high integration; Be suitable for the multiple standards wireless communication system, thereby and can significantly reduce the total solution cost, dwindle the pcb board area and can improve the stability of a system.

The above; It only is the preferred embodiment of the utility model; Be not to be the utility model to be done the restriction of any other form, and, still belong to the utility model scope required for protection according to any modification or equivalent variations that the technical spirit of the utility model is done.

Claims

1. ultra broadband down-conversion mixer; Comprise that chip integration becomes transformer (1), common-base amplifier (2), earth terminal (3), radio frequency/local oscillator input port (4) and output (5); It is characterized in that: said chip integration becomes two lead-out terminals of transformer (1) to link to each other with two inputs of common-base amplifier (2); Chip integration becomes two input terminals of transformer (1) to link to each other with radio frequency/local oscillator input port (4) with earth terminal (3) respectively; Said common-base amplifier (2) one sides are connected with output (5); Said chip integration becomes transformer (1) to comprise that chip integration becomes wide-band transformer (1-1); Said common-base amplifier (2) comprises two triodes and two voltage offset electric circuits; Said two triodes comprise first triode (2-1-1) and second triode (2-1-2); The emitter of the emitter of said first triode (2-1-1) and second triode (2-1-2) becomes the lead-out terminal of wide-band transformer (1-1) to link to each other with chip integration; The base stage of said first triode (2-1-1) links to each other with the output of first voltage offset electric circuit (2-2-1), and the base stage of said second triode (2-1-2) links to each other with the output of second voltage offset electric circuit (2-2-2), and the collector electrode of the collector electrode of said first triode (2-1-1) and second triode (2-1-2) respectively is connected with an output (5).

2. a kind of ultra broadband down-conversion mixer according to claim 1; It is characterized in that: said chip integration becomes transformer (1) also to comprise two electric capacity; Said first electric capacity (1-2) is connected in chip integration and becomes wide-band transformer (1-1) side, and two nodes of said second electric capacity (2-3) are installed in respectively between the emitter of emitter and second triode (2-1-2) that chip integration becomes wide-band transformer (1-1) and first triode (2-1-1).