CN201749928U

CN201749928U - Novel right bridge

Info

Publication number: CN201749928U
Application number: CN2010202428228U
Authority: CN
Inventors: 焦晨秋; 虞晶杰; 王斌
Original assignee: JESON WIRELESS Ltd
Current assignee: JESON WIRELESS Ltd
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2011-02-16
Anticipated expiration: 2020-06-30

Abstract

The utility model discloses a novel right bridge, formed by serially connecting two directional couplers the degree of coupling of which is 8.34dB and between which an impedance match is arranged; output ports are enabled to be in the same direction by varying interfaces, broken parts are interconnected through a fly line, and the interfaces of the two directional couplers having the degree of coupling of 8.34dB are interconnected through a two-end impedance conversion line. The right bridge has the advantages of small volume, mild frequency band and the capability of synthesizing larger power.

Description

Novel right bridge

Technical field

The utility model relates to a kind of right bridge, the novel right bridge in particularly a kind of microwave communication.

Background technology

The microwave right bridge is to be used in the microwave circuit input signal power is divided into two-way (phase difference is 90 ° each other) output, perhaps two-way input signal (phase difference is 90 ° each other) power being synthesized one tunnel critical function device, is one of core devices of forming microwave and wireless network.Can be divided into two kinds on arrowband right bridge and wideband orthogonal bridge according to electric circuit characteristic.The arrowband right bridge is representative with the single-stage branch line coupler, and its advantage is that live width is thicker, can bear more high-power merit division and combination success rate; Its shortcoming is that narrow bandwidth (the single-stage bandwidth is 10% usually) and volume are big.The wideband orthogonal bridge is to be representative with the Lange bridge, and its advantage is that volume is small and exquisite, and bandwidth can reach 1 octave even several octave usually, and its shortcoming is that live width is thinner, can't bear high-power merit division and combination and become.

The utility model content

Technical problem to be solved by this invention is that the novel right bridge that a kind of volume is little, the power tolerances is high will be provided.

In order to solve above technical problem, the utility model provides a kind of novel right bridge, uses two 8.34dB degree of coupling directional couplers, and series connection is a right bridge, is provided with impedance matching between two directional couplers; Change interface and make output port on equidirectional, gap is connected, use two ends impedance conversion line that two 8.34dB degree of coupling directional coupler ports are connected by fly line.

Superior effect of the present utility model is:

1) with respect to branch line coupler, volume is small and exquisite;

2) with respect to branch line coupler, frequency band is moderate;

3), can synthesize more high-power with respect to the Lange bridge.

Description of drawings

Fig. 1 is a basic circuit diagram of the present utility model.

Embodiment

See also shown in the accompanying drawing, be example with the 16WBUC product below, can reach the 16W small and exquisite right bridge of volume simultaneously at satisfied synthetic power, it is a right bridge that the utility model uses two 8.34dB degree of coupling directional couplers series connection, and the utility model will be further described.

As shown in Figure 1, the utility model provides a kind of novel right bridge, uses two 8.34dB degree of coupling directional couplers, and series connection is a right bridge, is provided with impedance matching between two directional couplers; Change interface and make output port on equidirectional, by fly line gap is connected, use two ends impedance conversion line that two 8.34dB degree of coupling directional coupler ports are connected, merit is divided and is synthesized performance and can reach quadrature, 90 ° of phase differences.

Consider that in actual design each 8.34dB directional coupler all has stationary wave characteristic, needing design impedance matching line in the serial connection process each other, to obtain less Insertion Loss.

Because therefore each 8.34dB directional coupler output two-port must make output port in the same way its malformation not equidirectional, must use wire jumper that its gap is connected when assembling.

16WBUC uses the right bridge design conditions as follows: selecting dielectric constant for use is 9.6 99 porcelain, and thickness is 10mil, electroplates with 6um thickness conduction band, use width as 0.2mm width gold ribbon as fly line.At the Ku wave band, 0.2mm metal conduction band and fly line are all near 50 Ω, and be bigger than Lange bridge construction live width (20um) increase, so the power tolerances is also higher.

Claims

1. novel right bridge, it is characterized in that: use two 8.34dB degree of coupling directional couplers, series connection is a right bridge, is provided with impedance matching between two directional couplers; Change interface and make output port on equidirectional, gap is connected, use two ends impedance conversion line that two 8.34dB degree of coupling directional coupler ports are connected by fly line.