DK136291D0 - VEIL ANTENNA WITH REACTUAL BUFFERS AND PROCEDURES FOR CARRYING OUT THERE - Google Patents

VEIL ANTENNA WITH REACTUAL BUFFERS AND PROCEDURES FOR CARRYING OUT THERE

Info

Publication number
DK136291D0
DK136291D0 DK911362A DK136291A DK136291D0 DK 136291 D0 DK136291 D0 DK 136291D0 DK 911362 A DK911362 A DK 911362A DK 136291 A DK136291 A DK 136291A DK 136291 D0 DK136291 D0 DK 136291D0
Authority
DK
Denmark
Prior art keywords
reactance
antenna
taps
reactance buffer
segment
Prior art date
Application number
DK911362A
Other languages
Danish (da)
Other versions
DK136291A (en
Inventor
William Tan
Robert Kurcbart
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of DK136291A publication Critical patent/DK136291A/en
Publication of DK136291D0 publication Critical patent/DK136291D0/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/02—Collapsible antennas; Retractable antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals

Abstract

A reactance buffer (218) maintains a substantially constant resonant frequency for an adjustable size loop antenna (200) having first (202) and second (204) antenna segments. Each segment has first (206, 208) and second (212, 214) ends, the first ends (206, 208) being coupled to a receiver, and the second ends (212, 214) providing loop size adjustment. The reactance buffer (218) comprises a reactance buffer input (206) coupled to the second end of the first (202) antenna segment. A plurality of taps (T1-T7) are linearly disposed along an integrated structure, the structure presenting a substantially flat surface, and having a predetermined length between the outermost taps corresponding to the loop antenna size adjustment required. The taps (T1-T7) provide selectable reactance buffer outputs for coupling to the second end of the second (204) antenna segment. A plurality of reactance elements (302, ..., 320) couple the reactance buffer input (206) to each of the plurality of taps (T1-T7) and provide a substantially constant reactance measured between the reactance buffer input (206) and each of the plurality of taps (T1-T7).
DK911362A 1989-01-23 1991-07-16 VEIL ANTENNA WITH REACTUAL BUFFERS AND PROCEDURES FOR CARRYING OUT THERE DK136291D0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29927689A 1989-01-23 1989-01-23
PCT/US1989/005684 WO1990008404A1 (en) 1989-01-23 1989-12-20 Reactance buffered loop antenna and method for making the same

Publications (2)

Publication Number Publication Date
DK136291A DK136291A (en) 1991-07-16
DK136291D0 true DK136291D0 (en) 1991-07-16

Family

ID=23154095

Family Applications (1)

Application Number Title Priority Date Filing Date
DK911362A DK136291D0 (en) 1989-01-23 1991-07-16 VEIL ANTENNA WITH REACTUAL BUFFERS AND PROCEDURES FOR CARRYING OUT THERE

Country Status (11)

Country Link
EP (1) EP0454694B1 (en)
JP (1) JP2588063B2 (en)
KR (1) KR930008833B1 (en)
AT (1) ATE121225T1 (en)
CA (1) CA2004365C (en)
DE (1) DE68922221T2 (en)
DK (1) DK136291D0 (en)
ES (1) ES2070311T3 (en)
FI (1) FI913520A0 (en)
MY (1) MY104488A (en)
WO (1) WO1990008404A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2280065B (en) * 1993-07-16 1997-05-14 Nec Corp Wristwatch-type selective calling receiver
JP2908248B2 (en) * 1993-07-16 1999-06-21 日本電気株式会社 Watch-type selective call receiver
JP3586929B2 (en) * 1995-05-10 2004-11-10 カシオ計算機株式会社 Portable wireless device antenna and portable wireless device
CN112993534B (en) * 2019-12-16 2023-04-07 RealMe重庆移动通信有限公司 Wearable electronic equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142002A (en) * 1981-02-27 1982-09-02 Toshiba Corp Small-sized loop antenna
US4713808A (en) * 1985-11-27 1987-12-15 A T & E Corporation Watch pager system and communication protocol

Also Published As

Publication number Publication date
MY104488A (en) 1994-04-30
KR910700550A (en) 1991-03-15
DK136291A (en) 1991-07-16
ATE121225T1 (en) 1995-04-15
DE68922221T2 (en) 1995-11-09
CA2004365C (en) 1994-05-03
WO1990008404A1 (en) 1990-07-26
FI913520A0 (en) 1991-07-23
KR930008833B1 (en) 1993-09-15
DE68922221D1 (en) 1995-05-18
EP0454694A1 (en) 1991-11-06
EP0454694B1 (en) 1995-04-12
EP0454694A4 (en) 1992-06-03
JPH04504491A (en) 1992-08-06
CA2004365A1 (en) 1990-07-23
ES2070311T3 (en) 1995-06-01
JP2588063B2 (en) 1997-03-05

Similar Documents

Publication Publication Date Title
JPS57142002A (en) Small-sized loop antenna
SE8900547D0 (en) RADIO FREQUENT RECEIVER DEVICE
GR3025644T3 (en) Improved monoclonal antibodies against the human alpha/beta t-cell receptor, their production and use
ATE28557T1 (en) GUIDE UNIT FOR FEMUR NECK OSTEOTOMY.
EP1542310A4 (en) Antenna device and transmitting/receiving device
GR920300064T1 (en) A metal fibre for reinforcing concrete and equipment for its manufacture
DK136291A (en) VEIL ANTENNA WITH REACTUAL BUFFERS AND PROCEDURES FOR CARRYING OUT THERE
KR0165886B1 (en) Fifo with variable commit pointer
EP0459882A3 (en) Adjustable high frequency device
FR2671844B1 (en) CURVED WAVE BELLOWS.
SE9503758D0 (en) magnetic Locking
PT94343A (en) TRANSMISSION BASE FOR A RADIOTELEPHONIC COMMUNICATION DEVICE
ATE29191T1 (en) VOTING UNIT FOR TELECOMMUNICATION TECHNOLOGY DEVICES.
NO144811C (en) PROCEDURE AND COUNTER COUPLING FOR DETERMINING THE RECEIVING FREQUENCY respectively. THE RECEIVING CHANNEL IN A HIGH-FREQUENCY RODODY RECEIVER
EP0400853A3 (en) Contactless measurement of the electrical resistance per unit length of filaments
EP0534790A3 (en) Waveguide converter for transmitting input radio waves
ATE87772T1 (en) ANGLE DIVERSITY RADIO SYSTEM FOR TROPOSPHERE RADIO COMMUNICATIONS.
CAO Phase relationships in the Si 3 N 4-Y 2 O 3-La 2 O 3 system
JPS6427301A (en) High frequency polarizer
DE3873022D1 (en) RECEIVER FOR THE RADIO DATA SYSTEM.
EP0419892A3 (en) Microwave polarisation filter
FR2347025A1 (en) ADJUSTABLE SUPPORT FOR FIXING, ORIENTING AND ALIGNING THE OPERATING FIELD AND THE EXPLORATION AND INTERVENTION INSTRUMENTS, ESPECIALLY IN ENDOSCOPIC MICROSURGERY.
CN107799869A (en) A kind of new antenna easy to use
IT1239012B (en) Adjustable intermediate joint with terminal
FR2632124B1 (en) DEVICE FOR TRANSMITTING OR RECEIVING VERY BROADBAND ELECTROMAGNETIC WAVES WITH VARIABLE RESONANCE BY CAPACITIVE TUNING

Legal Events

Date Code Title Description
AHB Application shelved due to non-payment