Unlock instant, AI-driven research and patent intelligence for your innovation.

Wideband RF bridge with variable coupling degree

A technology of radio frequency bridge and coupling degree, which is applied in the direction of measuring electricity, electrical components, and measuring electrical variables, etc. It can solve the problems of increased design difficulty, high receiver cost, and reduced intermediate frequency bandwidth, etc., to achieve the effect of reducing design difficulty and cost

Active Publication Date: 2018-01-30
SUNWAVE COMM
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods have limitations: 1) Many RF devices cannot withstand RF power exceeding 10dBm; 2) The IF bandwidth is greatly reduced, resulting in high cost of the existing vector network analyzer receiver and significant design difficulty Increase

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wideband RF bridge with variable coupling degree
  • Wideband RF bridge with variable coupling degree
  • Wideband RF bridge with variable coupling degree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The invention discloses a broadband radio frequency bridge with a variable coupling degree. Compared with the fixed coupling degree of the common radio frequency bridge, which is about -16dB, the adjustment range of the coupling degree C of the radio frequency bridge of the present invention is -20dB to -6dB, greatly The application range of the radio frequency bridge is expanded.

[0025] Such as Figure 4 As shown, the broadband radio frequency bridge with variable coupling degree of the present invention includes an excitation signal input port P1, the excitation signal input port P1 is connected to one end of the capacitor C1, and the other end of the capacitor C1 is connected to the a2 end of the winding a2-b2 The connection also includes winding a1-b1, winding a2-b2 and winding a1-b1 to form a twisted pair wound on the magnetic ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a wideband RF bridge with variable coupling degree. The wideband RF bridge comprises an excitation signal input port connected with C1. The C1 is connected with a winding a2-b2. The wideband RF bridge also includes a winding a1-b1. The windings a2-b2 and a1-b1 form a twisted pair to be wound around a magnet ring. A winding a3-b3 is also wound around the magnet ring. The a1-b1 and the a3-b3 are connected and are grounded. The windings a2-b2 and a3-b3 are connected with each other and are connected to C3. The C3 is connected to R2 and C4. The C4 is connected to the anodesof L3 and R3. The L3 is connected to control current 2. The cathode of the R3 is grounded. The winding a1-b1 is connected with the anodes of the C2, the L1 and the PIN diode R1. The L1 is connected to the control current 1. The C2 is connected to an RF device to be tested through a test interface. The cathode of the PIN diode R1 is connected to the R2, the C5, and the L2. The L2 is grounded. TheC5 is connected to a coupling signal output port. The wideband RF bridge with variable coupling degree can automatically adjust the dynamic range of a receiver based on measurement requirements.

Description

【Technical field】 [0001] The invention belongs to the technical field of testing instruments, and in particular relates to a wide-band radio frequency bridge with variable coupling degree. 【Background technique】 [0002] In modern radio frequency communication systems, vector network analyzers have been widely used, and can be used to measure the characteristics of radio frequency devices, measure the characteristics of wireless channels, and so on. Several main indicators of the vector network analyzer are: 1) measurement frequency band height; 2) dynamic range; 3) measurement speed and so on. A vector network analyzer consists of a source, receiver and test setup. The test devices mainly include directional bridges or directional couplers and transfer switches. Directional couplers and directional bridges are signal separation devices that can separate the reflected signal on the transmission line from the transmitted signal. Directional couplers are generally used for ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/30H04B1/16
Inventor 马延军王倩辛梦娜朱代先代新冠刘凌志
Owner SUNWAVE COMM